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Ruppia maritima

L. (1753)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Alismatales Family: Ruppiaceae Genus: Ruppia

ditchgrass, widgeon grass

Description

Key Characters:

Growth Form: Plants completely submerged rooted in seawater.

Stems: Stems greenish to brownish, capillary or slender, terete (cylindrical), (2–)4–10 dm long, many-branched, arising from creeping rhizomes.

Roots: Fibrous root system, also rooting at nodes.

Leaves: Leaves simple. Alternate, all similar, well-spaced or somewhat clustered. Blades linear, 10–100 mm long, 0.2–0.5(–1) mm wide. Apex rounded to obtuse. Base expanded into an open sheath. Margins entire. Only the midvein evident. Sheathing. Stipules membranous, sheathing and adnoate to leaf bases, sheath (2–)5–20(–70) mm long, ligule ± present.

Flowers: Flowers 2 per peduncle, axillary, peduncles at first short, elongating up to 3 dm long in fruit, often spiraling or coiling, during anthesis the peduncles and flowers concealed by the sheath of the uppermost stem leaves, the sheath ruptured by the elongating peduncle during anthesis as the flowers move to position slightly above the water surface. Flowers very small and inconspicuous, bisexual (perfect). Calyx (sepals) absent. Corolla (petals) absent. Stamens 2; anthers subsessile, dithecal, opening by longitudinal slits, the relatively large pollen sacs well separated on an expanded connective. Ovary superior, carpels (2–)4(–8), distinct, each carpel becoming elevated on a slender stipe in fruit so that the carpels of each flower form an umbelliform cluster; ovule 1, pendulous, campylotropous; stigma sessile or subsessile, peltate or umbonate.

Fruit: Fruit small; drupaceous; asymmetrically ovoid; borne on the slender stipe that continually elongates as the fruit matures; the stipe often twisted.; fruit symmetrical to asymmetrical; ovoid to pyriform; (1.5–)2–3(–4) mm long; the beak erect or curved; the elongate stipe 4–15(–35) mm long. Seeds without endosperm.

Ploidy: 2n = 16; 20; 24; 40

Habitat: Aquatic; occurring in brackish ponds and estuaries or similar man–made watercourses.

Elevation Range: 0–15 m.

Historical Distribution

Synonyms (51)

Buccaferrea maritima (L.) Lunell (1915)
Ruppia andina Phil. (1894)
Ruppia brachypus J.Gay (1849)
Ruppia brachypus subsp. bahusiensis Lindstr. (1920)
Ruppia brevipes Bertol. ex Griseb. (1864)
Ruppia cirrhosa subsp. longipes (Hagstr.) Á.Löve (1970)
Ruppia curvicarpa A.Nelson (1899)
Ruppia intermedia C.G.H.Thed. (1886)
Ruppia maritima f. aculeata Hagstr. (1911)
Ruppia maritima f. brevirostris C.Agardh (1823)
Ruppia maritima f. curvirostris H.St.John & Fosberg (1939)
Ruppia maritima f. pacifica H.St.John & Fosberg (1939)
Ruppia maritima f. pectinata Hagstr. (1911)
Ruppia maritima proles brachypus (J.Gay) Rouy (1912)
Ruppia maritima proles brevirostris (C.Agardh) Graebn. (1907)
Ruppia maritima proles curvicarpa (A.Nelson) Graebn. (1907)
Ruppia maritima subsp. brachypus (J.Gay) Bonnier & Layens (1894)
Ruppia maritima subsp. brevirostris C.Agardh (1823)
Ruppia maritima subsp. intermedia (C.G.H.Thed.) Piper & Beattie (1915)
Ruppia maritima subsp. obliqua (Griseb. & Schenk) Á.Löve & D.Löve (1961)
Ruppia maritima subsp. rostellata (W.D.J.Koch ex Rchb.) Asch. & Graebn. (1897)
Ruppia maritima subsp. rostrata (C.Agardh) Piper & Beattie (1915)
Ruppia maritima var. brachypus (J.Gay) K.Schum. (1894)
Ruppia maritima var. brevirostris (C.Agardh) Asch. & Graebn. (1897)
Ruppia maritima var. curvicarpa (A.Nelson) Fernald & Wiegand (1914)
Ruppia maritima var. exigua Fernald & Wiegand (1914)
Ruppia maritima var. floridana Graebn. (1907)
Ruppia maritima var. intermedia (C.G.H.Thed.) Asch. & Graebn. (1897)
Ruppia maritima var. japonica H.Hara (1983)
Ruppia maritima var. longipes Hagstr. (1911)
Ruppia maritima var. minor Mert. & W.D.J.Koch (1823)
Ruppia maritima var. obliqua (Griseb. & Schenk) Asch. & Graebn. (1897)
Ruppia maritima var. onondagensis Fernald & Wiegand (1914)
Ruppia maritima var. pacifica H.St.John & Fosberg (1939)
Ruppia maritima var. recta Moris (1827)
Ruppia maritima var. rostrata C.Agardh (1823)
Ruppia maritima var. subcapitata Fernald & Wiegand (1914)
Ruppia mexicana Hartog & Tussenbr. (2016)
Ruppia obliqua Griseb. & Schenk (1852)
Ruppia pectinata Rydb. (1900)
Ruppia rostellata W.D.J.Koch ex Rchb. (1824)
Ruppia rostellata var. brachypus (J.Gay) T.Marsson (1869)
Ruppia salina Schur (1866)
Ruppia spiralis subsp. longipes (Hagstr.) Á.Löve & D.Löve (1961)
Ruppia spiralis subsp. transsilvanica (Schur) Nyman (1882)
Ruppia subsessilis Thwaites (1864)
Ruppia taquetii H.Lév. (1911)
Ruppia transsilvanica Schur (1860)
Ruppia trichodes Durand (1847)
Ruppia zosteroides Lojac. (1909)
Zannichellia pedunculata Fuss (1854)

Uses and Culture

USES

Natural History

Statewide Status

Indigenous

Island Status

Ni'ihau(Incl. Lehua) Indigenous
Kaua'i Indigenous
O'ahu Indigenous
Molokai Indigenous
Lana'i Indigenous
Maui Indigenous
Hawai'i Indigenous

Dispersal Agents


Pollinators

Specimens

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Bibliography

Name Published In: Sp. Pl.: 127 (1753)

Other References

Wagner et al. 1990:1609 (Ni, K, O, Mo, L, M, H)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Ruppia maritima L. Mahaulepu, Ka Lae Paoo, sea level. Brackish pond back of sand beach, growing in 1 ft. of water. PRESERVED_SPECIMEN Harold St. John 20003 Kauai PTBG 6/3/1938
2 Ruppia maritima L. Kipu Kai. Waterhouse Estate. Sea level. Brackish water pond behing "Long Beach" between Kawelikoa Point and Molehu. PRESERVED_SPECIMEN Tim Flynn 7312 Kauai PTBG 12/5/2006
3 Ruppia maritima L. Kipu-Kai coastal, in the river-mouth, stream blocked at beach beginning of most Southerly bay, not emptying. Full of Ruppia. Casuarina Coastal Strand PRESERVED_SPECIMEN Natalia Tangalin 3432 Kauai PTBG 3/28/2013
4 Ruppia maritima L. Lawai Valley, Allerton Garden, in vicinity of "lotus pond" on west side of Lawai Stream, elev. ca. 2-3 m. PRESERVED_SPECIMEN David H. Lorence 7462 Kauai PTBG 5/16/1994
5 Ruppia maritima L. kailua beach, kailua, oahu, hawaiian islands. Submerged in brackish estuary. PRESERVED_SPECIMEN f.r. fosberg 14038 TENN 6/13/1937
6 Ruppia maritima L. Kahuku shoreline, in waterway drainage adjacent to Kii Pond In sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN C. Imada 2005-3 Oahu US 3/23/2002
7 Ruppia maritima L. Lihue District, Kipu-Kai coastal, in the river-mouth, stream blocked at beach beginning of most southerly bay Coastal strand PRESERVED_SPECIMEN N. Tangalin & M. DeMotta 3432 Kauai US 3/28/2013
8 Ruppia maritima L. vicinity of honolulu PRESERVED_SPECIMEN wilkes explor. exped. s.n. Oahu US 1838-08-07
9 Ruppia maritima L. Maunalua, Kuapa Pond Shallow margin PRESERVED_SPECIMEN Harold St. John 10398 Oahu US 2/28/1930
10 Ruppia maritima L. hanapepe distr., hanapepe, ditch/canal between park and refuse transfer station PRESERVED_SPECIMEN t. w. flynn 6782 Kauai US 3/5/2001
11 Ruppia maritima L. Wailuku In stagnis [pools] PRESERVED_SPECIMEN Urbain Jean Faurie 1178 Maui US 8/1/1909
12 Ruppia maritima L. kahuku shoreline, in waterway drainage adjacent to kii pond In sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN c. imada 2005-3 Oahu US 3/23/2002
13 Ruppia maritima L. kailua beach, in kailua stream, just inside mouth PRESERVED_SPECIMEN f. r. fosberg 55602 Oahu US 10/12/1974
14 Ruppia maritima L. Kailua Beach, in Kailua Stream, just inside mouth PRESERVED_SPECIMEN Fosberg, F. R. 55602 Oahu US 10/12/1974
15 Ruppia maritima L. cape kinau, halua pond PRESERVED_SPECIMEN l. hume 718 US
16 Ruppia maritima L. Cape Kinau, Ahihi-Kinau Natural Areas Reserve. PRESERVED_SPECIMEN Nagata, K. M. 3703 Maui US 10/2/1987
17 Ruppia maritima L. Mokuleia Brackish pond PRESERVED_SPECIMEN Otto Degener 12901 Oahu US 9/15/1940
18 Ruppia maritima L. honolulu, fort shafter PRESERVED_SPECIMEN a. s. hitchcock 13853 Hawaii US 6/23/1916
19 Ruppia maritima L. cape kinau, ahihi-kinau natural areas reserve. PRESERVED_SPECIMEN k. nagata 3703 Maui US 10/2/1987
20 Ruppia maritima L. Mokuleia PRESERVED_SPECIMEN Degener, O.; Dowson, G. 12901 Oahu US 9/15/1940
21 Ruppia maritima L. Pupoo Fish Pond. PRESERVED_SPECIMEN Forbes, C. N. 587.Mo Molokai US 9/12/2020
22 Ruppia maritima L. mokuleia PRESERVED_SPECIMEN o. degener & g. dowson 12901 Oahu US 9/15/1940
23 Ruppia maritima L. Honolulu, Fort Shafter PRESERVED_SPECIMEN Hitchcock, A. S. 13853 Oahu US 6/23/2016
24 Ruppia maritima L. Hanapepe Distr., Hanapepe, Ditch/canal between Park and Refuse Transfer Station PRESERVED_SPECIMEN Flynn, T. W. 6782 Kauai US 3/5/2001
25 Ruppia maritima L. poipu beach, grounds of sheraton kauai hotel PRESERVED_SPECIMEN f. r. fosberg 53648 Hawaii US 4/2/1971
26 Ruppia maritima L. pupoo fish pond. PRESERVED_SPECIMEN c. n. forbes 587.mo Molokai US
27 Ruppia maritima L. Cape Hanamanioa, southern E Maui. PRESERVED_SPECIMEN Hobdy, R. W. 984.5 Maui US 2/1/1981
28 Ruppia maritima L. Lihue District, Kipu-Kai coastal, in the river-mouth, stream blocked at beach beginning of most southerly bay Coastal strand PRESERVED_SPECIMEN Tangalin, N.; DeMotta, M. 3432 Kauai US 3/28/2013
29 Ruppia maritima L. Vicinity of Honolulu PRESERVED_SPECIMEN Wilkes Explor. Exped. s.n. Oahu US 1838-00-00
30 Ruppia maritima L. kailua beach, kailua. PRESERVED_SPECIMEN f. r. fosberg 14038 Oahu US 6/13/1937
31 Ruppia maritima L. niaupala fishpond, kaluaaha PRESERVED_SPECIMEN h. st. john 19946 Molokai US 1/2/1939
32 Ruppia maritima L. Koolau Range, Waimea Bay, Kamananui [stream], in estuary Brackish water PRESERVED_SPECIMEN Richard Sumner (Dick) Cowan 594 Oahu US 12/1/1946
33 Ruppia maritima L. mokuleia, oahu Along stone wall PRESERVED_SPECIMEN otto degener; gordon dawson 12901 VT 9/15/1940
34 Ruppia maritima L. Niaupala Fishpond, Kaluaaha PRESERVED_SPECIMEN St. John, H. 19946 Molokai US 1/2/1939
35 Ruppia maritima L. East Maui, Makawao District, Cape Hanamanioa Growing submerged in anchialine ponds. PRESERVED_SPECIMEN Hobdy, R.W. 984 1/2 Maui BISH 2/1/1981
36 Ruppia maritima L. plantae exsiccatae grayanae. submerged in brackish estuary, kailua beach, kailua, o'ahu. PRESERVED_SPECIMEN f. r. fosberg 14038 BRU 6/13/1937
37 Ruppia maritima L. Kahuku shoreline, in waterway drainage adjacent to Kii Pond Growing in sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN Imada, C.T. Collector Number: 2002-3 Oahu BISH 3/23/2002
38 Ruppia maritima L. Halepalaoa landing In shallow closed estuary. PRESERVED_SPECIMEN St. John, H. 22647 Lanai BISH 4/5/1947
39 Ruppia maritima L. opaeula pond, makalawena, kona Pond 100m from ocean. PRESERVED_SPECIMEN higashino, p.k. collector number: 9756 Hawaii BISH 4/14/1982
40 Ruppia maritima L. Kona Airfield, N end In cistern of brackish water, 4 1/2 ft below ground level. PRESERVED_SPECIMEN Kondo, Y. s.n. Hawaii BISH 8/26/1951
41 Ruppia maritima L. kalaupapa; airport, seasonal wetland submerged PRESERVED_SPECIMEN wysong, m.l. collector number: 612 Molokai BISH 2/8/2005
42 Ruppia maritima L. PRESERVED_SPECIMEN f. r. fosberg 14038 BSN 6/13/1937
43 Ruppia maritima L. cape hanamanioa, southern e maui. PRESERVED_SPECIMEN r. hobdy 984.5 Kauai US 2/1/1981
44 Ruppia maritima L. Halua Pond, Cape Kinau PRESERVED_SPECIMEN LMH 718 Maui BISH
45 Ruppia maritima L. Kalaupapa; airport, seasonal wetland submerged PRESERVED_SPECIMEN Wysong, M.L. 612 Molokai BISH 2/8/2005
46 Ruppia maritima L. Kahuku shoreline, in waterway drainage adjacent to Kii Pond In sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN Imada, C. 2005-3 Oahu US 2002-00-00
47 Ruppia maritima L. halua pond, cape kinau growing on cactus PRESERVED_SPECIMEN lmh collector number: 718 Oahu BISH
48 Ruppia maritima L. makulawena, n kona, where 1801 lava flow enters the ocean PRESERVED_SPECIMEN carlquist, s. collector number: 2100 Oahu BISH 7/30/1966
49 Ruppia maritima L. kailua beach, kailua, oahu Dryish talus. PRESERVED_SPECIMEN f.r. fosberg 14,038 BRIT 7/13/1937
50 Ruppia maritima L. kailua, oahu PRESERVED_SPECIMEN f. r. fosberg 14038 DUKE 6/13/1937
51 Ruppia maritima L. hanapepe, ditch between park and refuse transfer station Pennisetum clandestinum and Rhizophora mange PRESERVED_SPECIMEN flynn, t. collector number: 6782 Kauai BISH 3/5/2001
52 Ruppia maritima L. poipu beach, grounds of sheraton kauai hotel In small, probably artificial pond, not conspicuously brackish at least in rainy period. PRESERVED_SPECIMEN fosberg, f.r. collector number: 53648 Kauai BISH 4/2/1971
53 Ruppia maritima L. kailua stream, kailua beach Abundant in brackish water just inside beach at mouth of stream. PRESERVED_SPECIMEN fosberg, f.r. collector number: 27100 Oahu BISH 10/5/1946
54 Ruppia maritima L. Opaeula Pond, Makalawena, Kona Pond 100m from ocean. PRESERVED_SPECIMEN Higashino, P.K. 9756 Hawaii BISH 4/14/1982
55 Ruppia maritima L. punaluu fresh water pond PRESERVED_SPECIMEN chung, d. collector number: 22987 Oahu BISH 7/1/1996
56 Ruppia maritima L. Laie PRESERVED_SPECIMEN Cooke Jr., C.M. s.n. Oahu BISH 2/1/1919
57 Ruppia maritima L. maunalua, kuapa pond Shallow margin. PRESERVED_SPECIMEN st.john, h. collector number: 10398 Oahu BISH 2/28/1930
58 Ruppia maritima L. kailua beach In brackish estuary, submerged. PRESERVED_SPECIMEN fosberg, f.r. collector number: 14038 Oahu BISH 6/13/1937
59 Ruppia maritima L. Heeia Fresh-water stream, near bridge. PRESERVED_SPECIMEN Suehiro, A. s.n. Oahu BISH 4/22/1934
60 Ruppia maritima L. Punaluu fresh water pond PRESERVED_SPECIMEN Chung, D. 22987 Oahu BISH 7/1/1996
61 Ruppia maritima L. Pohaku Paea, Camp Kinau, Halua Pond anchialine pond PRESERVED_SPECIMEN LMH 718 Maui BISH
62 Ruppia maritima L. kau distr., south point, in anchialine pond of lua o palahemo, collected with anchialine shrimp PRESERVED_SPECIMEN englund, r. collector number: s.n. Hawaii BISH 7/28/2001
63 Ruppia maritima L. east maui, makawao district, kalaeloa, sw rift, near la perouse bay Brackish water pools. PRESERVED_SPECIMEN medeiros, a.c. collector number: 566a Maui BISH 10/8/1983
64 Ruppia maritima L. Kau Distr., South Point, in anchialine pond of Lua o Palahemo, collected with anchialine shrimp PRESERVED_SPECIMEN Englund, R. Collector Number: s.n. Hawaii BISH 7/28/2001
65 Ruppia maritima L. Kalapana Horse Pond, Kalapana PRESERVED_SPECIMEN Doty, M.S. s.n. Hawaii BISH 6/22/1955
66 Ruppia maritima L. east maui, makawao district, cape hanamanioa Growing submerged in anchialine ponds. PRESERVED_SPECIMEN hobdy, r.w. collector number: 984 1/2 Maui BISH 2/1/1981
67 Ruppia maritima L. laie PRESERVED_SPECIMEN cooke jr., c.m. collector number: s.n. Oahu BISH 2/1/1919
68 Ruppia maritima L. Kailua Stream, Kailua Beach Abundant in brackish water just inside beach at mouth of stream. PRESERVED_SPECIMEN Fosberg, F.R. 27100 Oahu BISH 10/5/1946
69 Ruppia maritima L. maui PRESERVED_SPECIMEN forbes, c.n. collector number: s.n. Maui BISH
70 Ruppia maritima L. Poipu Beach, grounds of Sheraton Kauai Hotel In small, probably artificial pond, not conspicuously brackish at least in rainy period. PRESERVED_SPECIMEN Fosberg, F.R. 53648 Kauai BISH 4/2/1971
71 Ruppia maritima L. hauula PRESERVED_SPECIMEN forbes, c.n. collector number: 2365 o Oahu BISH 6/1/1916
72 Ruppia maritima L. hamakua marsh, kailua, mauka (mountainside) of hamakua drive Growing in tangled clumps in standing water. PRESERVED_SPECIMEN imada, c.t. engilis, a.; yuen, a. collector number: 92-14 Oahu BISH 4/4/1992
73 Ruppia maritima L. Kailua Beach In brackish estuary, submerged. PRESERVED_SPECIMEN Fosberg, F.R. 14038 Oahu BISH 6/13/1937
74 Ruppia maritima L. Mahaulepu, Ka Lae Paoo Brackish pond back of sand beach. Growing in 1ft of water. PRESERVED_SPECIMEN St. John, H. 20003 Kauai BISH 2/14/1939
75 Ruppia maritima L. Ahihi-Kinau Natural Area Reserve, pool near Pohaku Point In pool of slighlty brackish water. PRESERVED_SPECIMEN Abbott, I.A. 91.57 Maui BISH 3/6/1991
76 Ruppia maritima L. maunalua fish pond. aquatic PRESERVED_SPECIMEN hume, e.p. collector number: 191 Oahu BISH 4/27/1931
77 Ruppia maritima L. keomuku, near Brackish puddle. PRESERVED_SPECIMEN degener, o. degener, i. collector number: 28591 Lanai BISH 7/31/1963
78 Ruppia maritima L. Mokuleia Brackish pond. PRESERVED_SPECIMEN Degener, O. 12901 Oahu BISH 9/15/1940
79 Ruppia maritima L. Pohue Bay In brackish Pond. PRESERVED_SPECIMEN Higashino, P.K. 10212 Hawaii BISH 3/26/1984
80 Ruppia maritima L. Hamakua Marsh, Kailua, mauka (mountainside) of Hamakua Drive Growing in tangled clumps in standing water. PRESERVED_SPECIMEN Imada, C.T. 92-14 Oahu BISH 4/4/1992
81 Ruppia maritima L. Kau Distr., South Point, in anchialine pond of Lua o Palahemo, collected with anchialine shrimp PRESERVED_SPECIMEN Englund, R. s.n. Hawaii BISH 7/28/2001
82 Ruppia maritima L. niaupala fishpond, kaluaaha Submerged in shallow salt pond. PRESERVED_SPECIMEN st.john, h. collector number: 19946 Oahu BISH 1/2/1939
83 Ruppia maritima L. kalahuipuaa; near path #5 Anchialine pond; mixed collection with Enteromorpha intestinalis. PRESERVED_SPECIMEN abbott, i.a. collector number: 19837 Hawaii BISH 6/28/1990
84 Ruppia maritima L. ahihi-kinau natural area reserve, pool near pohaku point In pool of slighlty brackish water. PRESERVED_SPECIMEN abbott, i.a. norris, f.m. collector number: 91.57 Maui BISH 3/6/1991
85 Ruppia maritima L. Pupoo [sp?] Fish Pond PRESERVED_SPECIMEN Forbes, C.N. 587 Mo Molokai BISH 9/1/1912
86 Ruppia maritima L. Near Honolulu, Salt Lake Submerged. PRESERVED_SPECIMEN Christophersen, E. 1394 Oahu BISH 8/21/1930
87 Ruppia maritima L. anchialine pond along coast approx. 1/3 mile north from kona coast state park Salinity of water was 4 ppt. PRESERVED_SPECIMEN englund, r. kanewa, d.s.k. collector number: s.n. Hawaii BISH 2/13/2000
88 Ruppia maritima L. niu valley, out toward koko head Living stream by bridge. PRESERVED_SPECIMEN setchell, w.a. collector number: 15680 Oahu BISH 9/19/1926
89 Ruppia maritima L. Maunalua fish pond. Aquatic PRESERVED_SPECIMEN Hume, E.P. 191 Oahu BISH 4/27/1931
90 Ruppia maritima L. Honouliuli, about 2km S of USC and GS Magnetic Sta., Ewa Coral Plain In water of brackish pond, growing submerged on mud bottom. PRESERVED_SPECIMEN Fosberg, F.R. 12813 Oahu BISH 1/12/1936
91 Ruppia maritima L. honolulu, near ala moana Open marsh, near large number of Typha. In shallow water with green alga. PRESERVED_SPECIMEN neal, m.c. collector number: 1190 Oahu BISH 12/2/1939
92 Ruppia maritima L. Leahi Salty inlet, submerged. PreservedSpecimen St. John, H. Collector Number: 23620 Niihau BISH Specimen 3/31/1949
93 Ruppia maritima L. mouth of waimea river PRESERVED_SPECIMEN st.john, h. collector number: 11113 Oahu BISH 7/5/1931
94 Ruppia maritima L. Waimea Bay Brackish water. PRESERVED_SPECIMEN Shinohara, B. 71 Oahu BISH 12/1/1946
95 Ruppia maritima L. pohue bay In brackish Pond. PRESERVED_SPECIMEN higashino, p.k. allen, m.s. collector number: 10212 Hawaii BISH 3/26/1984
96 Ruppia maritima L. East Maui, Makawao District, Kalaeloa, SW rift, near La Perouse Bay Brackish water pools. PRESERVED_SPECIMEN Medeiros, A.C. 566a Maui BISH 10/8/1983
97 Ruppia maritima L. mokuleia PRESERVED_SPECIMEN degener, o. dowson, g. collector number: 12901 Oahu BISH 9/15/1940
98 Ruppia maritima L. Kailua Beach In brackish estuary, submerged. PRESERVED_SPECIMEN Fosberg, F.R. Collector Number: 14038 Oahu BISH 6/13/1937
99 Ruppia maritima L. Hauula PRESERVED_SPECIMEN Forbes, C.N. Collector Number: 2365 O Oahu BISH 6/1/1916
100 Ruppia maritima L. Kahuku shoreline, in waterway drainage adjacent to Kii Pond Growing in sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN Imada, C.T. 2002-3 Oahu BISH 3/23/2002
101 Ruppia maritima L. Niu Valley, out toward Koko Head Living stream by bridge. PRESERVED_SPECIMEN Setchell, W.A. 15680 Oahu BISH 9/19/1926
102 Ruppia maritima L. Mouth of Waimea River PRESERVED_SPECIMEN St. John, H. 11113 Oahu BISH 7/5/1931
103 Ruppia maritima L. waimea bay Brackish water. PRESERVED_SPECIMEN shinohara, b. collector number: 71 Oahu BISH 12/1/1946
104 Ruppia maritima L. Cape Kinau, Ahihi-Kinau Natural Areas Reserve Growing in anchealine pools, completely submerged. PRESERVED_SPECIMEN Nagata, K.M. 3703 Maui BISH 10/2/1987
105 Ruppia maritima L. Makulawena, N Kona, where 1801 lava flow enters the ocean In shallow pools (lagoons) just inland from coast. PRESERVED_SPECIMEN Carlquist, S. 2100 Hawaii BISH 7/30/1966
106 Ruppia maritima L. kahuku shoreline, in waterway drainage adjacent to kii pond Growing in sandy substrate at mouth of waterway where freshwater and saltwater intermix. PRESERVED_SPECIMEN imada, c.t. collector number: 2002-3 Oahu BISH 3/23/2002
107 Ruppia maritima L. kailua beach Rain forest. PRESERVED_SPECIMEN fosberg, f.r. collector number: 13181 Maui BISH 7/10/1936
108 Ruppia maritima L. waimanalo, bellows field Submerged in sandy drainage ditch with pools of brackish water, near sea. Shaded by ironwood trees. PRESERVED_SPECIMEN rockafellow, r. neal, m.c. collector number: s.n. Oahu BISH 8/7/1956
109 Ruppia maritima L. kailua beach, in kailua stream, just inside the mouth In sand, barely submerged. PRESERVED_SPECIMEN fosberg, f.r. collector number: 55602 Oahu BISH 10/12/1974
110 Ruppia maritima L. Anchialine pond along coast approx. 1/3 mile north from Kona Coast State Park Salinity of water was 4 ppt. PRESERVED_SPECIMEN Englund, R. s.n. Hawaii BISH 2/13/2000
111 Ruppia maritima L. mahaulepu, ka lae paoo Brackish pond back of sand beach. Growing in 1ft of water. PRESERVED_SPECIMEN st.john, h. collector number: 20003 Kauai BISH 2/14/1939
112 Ruppia maritima L. Kailua Beach In brackish water. PRESERVED_SPECIMEN Fosberg, F.R. 13181 Oahu BISH 7/10/1936
113 Ruppia maritima L. Kailua Beach, in Kailua Stream, just inside the mouth In sand, barely submerged. PRESERVED_SPECIMEN Fosberg, F.R. 55602 Oahu BISH 10/12/1974
114 Ruppia maritima L. Hauula PRESERVED_SPECIMEN Forbes, C.N. 2365.O Oahu BISH 6/1/1916
115 Ruppia maritima L. Honolulu, near Ala Moana Open marsh, near large number of Typha. In shallow water with green alga. PRESERVED_SPECIMEN Neal, M.C. 1190 Oahu BISH 12/2/1939
116 Ruppia maritima L. honouliuli, about 2km s of usc and gs magnetic sta., ewa coral plain In water of brackish pond, growing submerged on mud bottom. PRESERVED_SPECIMEN fosberg, f.r. collector number: 12813 Oahu BISH 1/12/1936
117 Ruppia maritima L. Leahi Salty inlet, submerged. PRESERVED_SPECIMEN St. John, H. 23620 Niihau BISH 3/31/1949
118 Ruppia maritima L. Hanapepe, ditch between Park and Refuse Transfer Station Pennisetum clandestinum and Rhizophora mange PRESERVED_SPECIMEN Flynn, T. 6782 Kauai BISH 3/5/2001
119 Ruppia maritima L. kalapana horse pond, kalapana PRESERVED_SPECIMEN doty, m.s. collector number: s.n. Hawaii BISH 6/22/1955
120 Ruppia maritima L. cape kinau, ahihi-kinau natural areas reserve Growing in anchealine pools, completely submerged. PRESERVED_SPECIMEN nagata, k.m. collector number: 3703 Maui BISH 10/2/1987
121 Ruppia maritima L. Kalahuipuaa; near path #5 Anchialine pond; mixed collection with Enteromorpha intestinalis. PRESERVED_SPECIMEN Abbott, I.A. 19837 Hawaii BISH 6/28/1990
122 Ruppia maritima L. Keomuku, near Brackish puddle. PRESERVED_SPECIMEN Degener, O. 28591 Lanai BISH 7/31/1963
123 Ruppia maritima L. near honolulu, salt lake Submerged. PRESERVED_SPECIMEN christophersen, e. collector number: 1394 Oahu BISH 8/21/1930
124 Ruppia maritima L. Anchialine pond along coast approx. 1/3 mile north from Kona Coast State Park Salinity of water was 4 ppt. PRESERVED_SPECIMEN Englund, R. Kanewa, D.S.K. Collector Number: s.n. Hawaii BISH 2/13/2000
125 Ruppia maritima L. pupoo fish pond PRESERVED_SPECIMEN forbes, c.n. collector number: 587 mo Molokai BISH 9/1/1912
126 Ruppia maritima L. Koko Head In pond, saltwater. PRESERVED_SPECIMEN Hosaka, E.Y. 162 Oahu BISH 2/28/1930
127 Ruppia maritima L. waimanalo, Bellows Field Submerged in sandy drainage ditch with pools of brackish water, near sea. Shaded by ironwood trees. PRESERVED_SPECIMEN Rockafellow, R. s.n. Oahu BISH 8/7/1956
128 Ruppia maritima L. pohaku paea, camp kinau, halua pond anchialine pond PRESERVED_SPECIMEN collector number: lmh 718 Maui BISH
129 Ruppia maritima L. halepalaoa landing ohia forest, native trees and shrubs, matted fern PRESERVED_SPECIMEN st.john, h. cowan, r.s. collector number: 22647 Molokai BISH 4/5/1947
130 Ruppia maritima L. heeia Fresh-water stream, near bridge. PRESERVED_SPECIMEN suehiro, a. collector number: s.n. Oahu BISH 4/22/1934
131 Ruppia maritima L. kona airfield, n end Weed of fallow sugarcane field. PRESERVED_SPECIMEN kondo, y. collector number: s.n. Hawaii BISH 8/26/1951
132 Ruppia maritima L. mahaulepu, ka lae paoo PRESERVED_SPECIMEN st.john, h. collector number: 20003 Hawaii BISH 2/14/1939
133 Ruppia maritima L. Niaupala Fishpond, Kaluaaha Submerged in shallow salt pond. PRESERVED_SPECIMEN St. John, H. 19946 Oahu BISH 1/2/1939
134 Ruppia maritima L. leahi Salty inlet, submerged. PRESERVED_SPECIMEN st.john, h. collector number: 23620 Niihau BISH 3/31/1949
135 Ruppia maritima L. Maunalua, Kuapa Pond Shallow margin. PRESERVED_SPECIMEN St. John, H. 10398 Oahu BISH 2/28/1930
136 Ruppia maritima L. Koloa District, Lawai Valley. Allerton Garden, in vicinity of "lotus pond" on W side of Lawai Stream Forming dense colonies in fresh whater canal. PRESERVED_SPECIMEN Lorence, D.H. 7462 Kauai BISH 5/16/1994
137 Ruppia maritima L. koko head In pond, saltwater. PRESERVED_SPECIMEN hosaka, e.y. collector number: 162 Oahu BISH 2/28/1930
138 Ruppia maritima L. submerged in brackish estuary, kailua beach, kailua, oahu, hawaiian islands. PRESERVED_SPECIMEN f. r. fosberg 14038 CHRB 6/13/1937
139 Ruppia maritima L. kailua beach, kailua, oahu On a Kukui tree...and on the ground PRESERVED_SPECIMEN francis r. fosberg 14038 MIN 6/13/1937
140 Ruppia maritima L. kailua beach, kailua, oahu submerged in brackish estuary PRESERVED_SPECIMEN fosberg, f.r. 14038 CM 6/13/1937
141 Ruppia maritima L. mokuleia, oahu brackish pond PRESERVED_SPECIMEN degener, o.; dawson, g. 12901 CM 9/15/1940
142 Ruppia maritima L. kailua beach, kailua. In brackish estuary, submerged. PRESERVED_SPECIMEN f. r. fosberg 14038 NY 6/13/1937
143 Ruppia maritima L. lihue district, kipu-kai coastal, in the river-mouth, stream blocked at beach beginning of most southerly bay PRESERVED_SPECIMEN n. tangalin & m. demotta 3432 MO 3/28/2013
144 Ruppia maritima L. Hanapepe. Ditch/canal between Park and Refuse Transfer Station. Regional elev. 0-1 m. PRESERVED_SPECIMEN Tim Flynn 6782 Kauai PTBG 3/5/2001
145 Ruppia maritima L. Cape Kinau. Ahihi-Kinau Natural Areas Reserve. Sea level. Anchealine pools. PRESERVED_SPECIMEN Kenneth M. Nagata 3703 Maui PTBG 10/2/1987
146 Ruppia maritima L. Kahuku shoreline, in waterway drainage adjacent to Kii Pond. Sea level. PRESERVED_SPECIMEN Clyde Imada 2002-3 Oahu PTBG 3/23/2002
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