Euphorbia celastroides var. kaenana

Sherff (1936)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Rosids Order: Malpighiales Family: Euphorbiaceae Genus: Euphorbia

‘akoko, ‘ākoko, ‘ekoko, koko, kōkōmālei

Description

Key Characters:

Growth Form: Shrubs or small trees (0.4–)1–8(–9) m tall.

Stems: Stems prostrate to erect, glabrous, flowering branches often nodose, 1–4(–6) mm in diameter.

Roots:

Leaves: Leaves simple. Opposite, distichous. Blades oblong, obovate, or oblanceolate to elliptic or linear, (4–)10–70(–80) mm long, (3–)5–30(–40) mm wide. Apex acute to obtuse, retuse or mucronulate. Base cuneate to obtuse, oblique. Surfaces glabrous, sometimes glaucous. Margins entire. Petioles (0.5–)1–5(–6) mm long, glabrous to villous. Stipules acute to rounded–triangular, 1–4(–6) mm long, glabrous to villous, erose, ciliate.

Flowers: Flowers in cyathia on compact lateral branches. involucre campanulate, (1–)1.5–3 mm high, 2–4mm wide, glabrous to villous, glands 4–5, green or red, glabrous to pilose. Flowers unisexual and highly reduced. Pistillate flowers solitary, on a gynophore; staminate flowers in 5 groups or cymules, each with 1 to several flowers. Calyx (sepals) absent. Corolla (petals) absent. Male flower reduced to a single stamen, with an articulation at junction of pedicel and filament, subtended by slender bracteoles. Ovary superior; styles yellow, green, or red, bifid less than ½ to more than ½ their length, 0.5–1(–1.5) mm long, glabrous to pubescent; stigma thickened.

Fruit: Capsules green to brown; ovoid to rounded–triangular; (0.5–)2–4 mm long; glabrous to pubescent; gynophores erect; exserted 0.5–1 mm from involucre; glabrous to pubescent. Seeds brown to gray; (0.5–)1–2(–2.5) mm long; tetragonal to obcompressed; smooth to rugose.

Ploidy: 2n = ca. 38*

Habitat: Coastal dry open areas and mesic forest.

Elevation Range: 1–120 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Bot. Gaz. (Crawfordsville) 97: 594 (1936)

Other References

Wagner et al. 1990:606 (O [as Chamaesyce celastroides var. kaenana]); Govaerts et al. 2000:692/Yang & Berry 2011 (Syn. C. c. var. kaenana = E. c. var. kaenana)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details In full sun. Preserved_Specimen Lau, J. 2376 Oahu BISH 1986-05-12
2 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details In Sida miced lowland dry shrubland with Lipochaeta integrifolia, Sida fallax, Portulaca oleracea, Leucaena leucocephala, Schinus Lipochaeta lobata, Senna gaudichaudii. Preserved_Specimen Perlman, S. 7111 Oahu BISH 1987-12-16
3 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details On talus slopes. Preserved_Specimen Perlman, S. 5134 Oahu BISH 1987-01-22
4 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Arid talus above shore Preserved_Specimen Degener, O. 20814 Oahu BISH 1950-04-08
5 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Dry brushy slope above ocean. Preserved_Specimen Fosberg, F.R. 13136 Oahu BISH 1936-05-30
6 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details In mostly Alien Veg. with Sida fallax, Jacquemontia, Santalum ellipticum, Boerhavia, Prosopis pallida, Chloris, Leucaena leucocephala, Digitaria insularis. Preserved_Specimen Perlman, S. 14025 Oahu BISH 1994-02-16
7 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Among rocks in arid region. Preserved_Specimen Degener, O. 8038 Oahu BISH 1931-03-21
8 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Steep grassy slopes, with Erythrina, Myoporum, Rauvolfia, Schiedea kealiae. Preserved_Specimen Perlman, S. 5222 Oahu BISH 1987-02-12
9 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Talus slopes. Preserved_Specimen Forbes, C.N. 2280 Oahu BISH 1915-12-16
10 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Xeric scrub; assoc. with Santalum. Preserved_Specimen Webster, G.L. 13839 Oahu BISH 1968-06-22
11 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Growing next to Chamaesyce 2877, with Boerhavia, Sida, Jacquemontia, and Gossypium Preserved_Specimen Takeuchi, W.N. 2876 Oahu BISH 1986-09-28
12 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Rock strewn slopes Preserved_Specimen Takeuchi, W.N. Oahu BISH 1984-01-28
13 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen MacCaughey, V. Oahu BISH 1915-03-28
14 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Degener, O. 27431 Oahu BISH 1961-05-20
15 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Takeuchi, W.N. 2877 Oahu BISH 1986-09-28
16 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Long, C.R. 2214 Oahu BISH 1964-08-21
17 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Among rocks with Santalum ellipticum in arid regions. Preserved_Specimen Degener, O. 11392 Oahu BISH 1937-07-25
18 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details On arid exposed talus. Growing with Sida, Gossypium, Santalum, Jacquemontia, grasses. Preserved_Specimen Herbst, D.R. 1159 Oahu BISH 1968-06-22
19 Euphorbia celastroides var. kaenana Locality redacted. Contact Bishop Museum Botany Department for details Sun-baked talus. Preserved_Specimen Degener, O. 24096 Oahu BISH 1956-06-17