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Poa mannii

Munro ex Hillebr. (1888)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Monocots Order: Poales Family: Poaceae Genus: Poa

Description

Key Characters:

Growth Form: Perennials, 5–7.5 dm tall.

Stems: Rhizomes short, extending incrementally in a single direction, culms tufted, strongly compressed, wiry, erect, glabrous, striate, somewhat glaucous, internodes solid.

Roots: Roots fibrous.

Leaves: Leaves simple. Alternate. Blades flat, lax, up to 15 cm long, 2-4 mm wide. Apex acuminate. Base somewhat clasping. Upper surfaces scabrous; lower surfaces glabrous. Lower leaf blades deciduous from sheaths. Veins parallel. Sheaths closed, glabrous, striate, usually shorter than internodes, auricles crescent-shaped; ligule completely encircling the culm, ca. 0.5 mm long, membranous except on the side opposite the blade, where a sheath nerve projects as a prominent tooth 2-4 mm long. Stipules absent.

Flowers: Panicles ovoid, usually less than 5 cm long, primary branches 0.5-2 cm long; spikelets arising in the upper 1/2 of the branches, pale greenish or yellowish brown, (2-)4-5-flowered, flattened, 4-7 mm long, rachilla elongate between the florets, subglabrous; glumes slightly unequal, narrow, ca. 3 mm long, 3-nerved, glabrous, apex acuminate. Lemmas 3-4 mm long, with cobwebby hairs at base, the keel and lateral nerves scabrous-ciliate, the intermediate nerves not prominent, apex acute; palea lanceolate to narrowly ovate, 3-3.5 mm long, 2-nerved, keeled, the keels scabrous-ciliate, margins hyaline, apex acute or bifid.

Fruit: Caryopsis reddish brown; ellipsoid to fusiform; slightly trigonal; ca. 1.5 mm long.

Ploidy:

Habitat:

Elevation Range:

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

Kaua'i Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Fl. Hawaiian Isl.: 526 (1888)

Other References

Wagner et al. 1990:1584 (K); Lorence et al. 1995:46 (REDISCOVER/K)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Mixed Acacia-Metrosideros w/ Styphelia, Dodonaea, Wilkesia, & Viola. Common along trail below check in station. Preserved_Specimen Flynn, T.W. 4552 Kauai BISH 1991-04-17
2 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Steep narrow canyon w/ seasonal stream & dripping, wet walls partial sun, assoc of grasses, ferns, & herbaceous dicots. On moist bank of decaying lava. Preserved_Specimen Herb, culms clumped, inflor pale green. Lorence, D.H. 5955 Kauai BISH 1988-04-11
3 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Faurie, A. 1306 Kauai BISH 1910-03-01
4 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Diospyros-Acacia-Metrosideros montane mesic forest, with Diospyros sandwicensis, D. hillebrandii, Alphitonia ponderosa, Pisonia sandwicensis, Dodonaea viscosa, Pleomele aurea, Psychotria mariniana, Kadua affinis, Coprosma waimeae,, C. foliosa, Myrsine lan Preserved_Specimen ca. 50 plants on back wall of guch with Peucedanum sandwicensis in early flower, mapped. Wood, K.R. 15910 Kauai BISH 2014-04-03
5 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Flynn, T.W. 1026 Kauai BISH 1985-03-19
6 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Herbst, D.R. 2829 Kauai BISH 1972-10-07
7 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Diospyros-Acacia-Metrosideros montane mesic forest with Diospyros sandwicensis, D. hillebrandii, Alphitonia ponderosa, Pisonia sandwicensis, Dodonaea viscosa, Pleomele aurea, Psychotria mariniana, Kaudua affinis, Coprosma waimeae, C. foliosa, Myrsine lan Preserved_Specimen Spreading patch with old inflorescences, with Diospyros , mapped. Wood, K.R. 15992 Kauai BISH 2014-07-08
8 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Steep diverse montain mesic forest w/ Remya montgomeryi, Nototrichium sp, Hedyotis acuminata, Nothocestrum longifolium, Schiedea membranacea, Phyllostegia electra, Myrsine linearifolia, Eurya sandwicensis, Melicope pallida; weeds: Passiflora mollissima, Rubus argutus, Kalanchoe, Erigeron, Lonicera. Area degraded by goats & pigs. Scarce on cliff faces. Preserved_Specimen In fruit. Wood, K.R. 1034 Kauai BISH 1991-07-06
9 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Secondary invasive Aleurites dry forest and cliffs w/ some cliff natives such as Nototrichium sandwicensis, Doryopteris decora, Lipochaeta connata acris, Panicum beecheyi, Poa mannii, Carex meyennii, Eu... Preserved_Specimen Grass, ca. 150 m before falls along stream cliffs, North aspect, ca. 50 plants, w/ old inflorescences K.R. Wood 19676 Kauai BISH 2025-01-07
10 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details On Metrosideros shrubland with Stenogyne campanulata, Xylosma hawaiiense, Tetraplasandrea waialealae, Ilex anomala, Perrottetia sandwicensis, Lysimachia glutinosa, Boehmeria grandis, Nototrichium divaricatum, Remya montgomeryi, Lipochaeta connata var. acris, Pleomele aurea. Preserved_Specimen Erect burted culms, ca 7 dm ht, glabrous auricles, ligule surround culm, sheaths closed, margins connate, ligule deeply fimbricate. Perlman, S. 18970 Kauai BISH 2004-05-19
11 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Near stream with Antidesma, Caesalpinia kavaiensis, Nototrichium sandwicensis, Flueggea neowawraea, Lepidium serra, Lantana, Bobea timonioides, Tetraplasandra, Hibiscus waimeae, Lipochaeta connata, Peucedanum sandwicense weeds, goats Preserved_Specimen 100+ plants Wood, K.R. 2269 Kauai BISH 1993-01-19
12 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details diverse mesic cliff; Munroidendron racemosum, Eragrostis variabilis, Wilkesia gymnoxiphium, Schiedea apokremnos, Lobelia niihauensis, Artemisia, Nototrichium sandwicense, Wilkesia hobdyi, Peucedanum sandwicensis, Leucaena leucocephala, Schinus, Nototrichium divaricatum, Bidens, Dodonaea, Artemisia Preserved_Specimen Wood, K.R. 5312 Kauai BISH 1996-06-19
13 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Mixed dry to mesic cliffs w/ Euphorbia celastroides var. hanapepensis, Artemisia australis, Bidens sandwicensis, Nototrichium divaricatum, Lipochaeta connata var. acris, Sida fallax, Dodonaea viscosa, Wilkesia gymnoxiphium, Bo Preserved_Specimen Grass, tufted w/ erect stems, culms dark green glossy, spiklets light green, ca. 50 large clumps, mapped Wood, K.R. 16766 Kauai BISH 2016-03-30
14 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Psydrax odorata, Hibiscus kokio, Aleurites, Syzygium cumini, Rauvolfia sandwicensis, Boehmeria grandis, Munroidendron racemosum, Carex meyerii, Hedyotis cookiana Preserved_Specimen Wood, K.R. 8567 Kauai BISH 2000-06-28
15 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Steep diverse montain mesic forest w/ Lysimachia glutinosa, Zanthoxylum kauaense, Nothocestrum sp. nov., Labordia helleri, Dryopteris unidentata, Lipochaeta, Wilkesia. Major threats: Goats, Erigeron, Rubus, Kalanchoe, Lythrum, landslides. Rare in area. Collected w/ ropes on cliff face. Preserved_Specimen In fruit & flower. Wood, K.R. 1149 Kauai BISH 1991-08-15
16 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Diospyros-Acacia-Metrosideros montane mesic forest w/ Diospyros sandwicensis, D. hillebrandii, Alphitonia ponderosa, Pisonia sandwicensis, Dodonaea viscosa, Pleomele aurea, Psychotria mariniana, Kadua affinis, Coprosma waimeae, C. foliosa, Myrsine lan Preserved_Specimen clumping on steep banks and basalt walls, early flower, ca.. 30 plants. Wood, K.R. 15879 Kauai BISH 2014-03-14
17 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Diverse mesic cliffs with Schiedea attenuata, Carex meyenii, and C. wahuense, Festuca sp., Gouania meyenii, Dryopteris unidentata. On basalt walls with Festuca sp. Threats: Goats, Kalanchoe pinnata, Erigeron karvinskianus. Preserved_Specimen Clumping. Wood, K.R. 1702 Kauai BISH 1992-03-13
18 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details in hanging valley. Degraded Diverse Mesic Forest Preserved_Specimen clumping grass, dark green culm, with seed, ca. 20 clumps, each clumb with ca. 15-20 culms, rare Wood, K.R. 15008 Kauai BISH 2012-05-30
19 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Mann, H. 274 Kauai BISH 1864-01-01
20 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Metrosideros-Acacia montane mesic forest. W/ Alphitonia, Pouteria, Xylosma hawaiiensis, Antidesma, Diospyros sandwicensis, Myrsine lanaiensis, Dodonaea, Wikstroemia furcata, Leptecophylla tameiameiae, Kadua affinis, Melicope ovata, M. barbige Preserved_Specimen grass, on steep wall, ca. 10 plants Wood, K.R. 14638 Kauai BISH 2011-05-05
21 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details seeping walls adjacent to rushing waterfall; Kadua cookiana, K. elatior, Poa mannii, Plantago princeps, Deparia cataracticola, Isachne pallens, Asplenium unilaterale, Lipochaeta connata, Selaginella arbuscula, Eragrostis variabilis, Carex meyenii, Machaerina angustifolia, Sphenomeris chinensis Preserved_Specimen Wood, K.R. 12967 Kauai BISH 2008-05-07
22 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details E facing cliffs, wet forest; Metrosideros, Antidesma, Pritchardia minor, Tetraplasandra waialealae, Xylosma hawaiiense, Nototrichium divaricatum, Stenogyne campanulata, Boehmeria, Artemisia, Remya montgomeryi, Ilex, Elaeocarpus, Perrottetia, Lysimachia glutinosa, Erigeron karvinskianus Preserved_Specimen ~0.5 m grass; fruit Perlman, S. 18957 Kauai BISH 2004-05-19
23 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Wet rocks on face of cliff. Preserved_Specimen Hitchcock, A.S. 15229 Kauai BISH 1916-10-18
24 Poa mannii Locality redacted. Contact Bishop Museum Botany Department for details Acacia koaia-Chamaesyce celastroides dry to mesic cliffs with Panicum lineale, Eragrostis variabilis, Carex meyenii, Poa mannii, Dryopteris unidentata, Doryopteris decora, Artemisia australis, Gouania meyenii, Neraudia sp. Growing in 30-100 cm. square patches along ridge. Threats: Kalanchoe pinnata, Erigeron, Lantana, Psidium guajava, Goats. Preserved_Specimen Wood, K.R. 3646 Kauai BISH 1994-10-14
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