Euphorbia skottsbergii var. skottsbergii

This name is accepted

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

‘akoko, ‘ekoko, koko, kōkōmālei

Description

Key Characters:

Growth Form: Subshrubs.

Stems: Stems erect or ascending to prostrate, 0.2–1(–2) m long, pilose to villous, glabrate, flowering branches occasionally nodose, 0.5–2 mm in diameter.

Roots:

Leaves: Leaves simple. Opposite, distichous, sometimes repand. Blades ovate–elliptic to obovate, (5–)12–20 mm long, 3–12 mm wide. Apex acute to rounded, retuse or mucronulate. Base cuneate to rounded, oblique. Upper surfaces glabrous; lower surfaces pilose to villous, at least on midvein and at basal margin. Margins serrate or entire. Petioles (1–)1.5–4 mm long, pilose to villous. Stipules rounded–triangular, 0.5–1 mm long, glabrous to villous, ciliate, erose.

Flowers: Flowers in cyathia solitary in the leaf axils, peduncles 0.5–1(–1.5) mm long, pilose to villous. involucre campanulate, 1–2 mm high, 1–2 mm wide, glabrous to pilose, glands 4(5), yellowish green to red, glabrous or pilose below. 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 green to white or red, bifid ca. ½ their length, 0.5–1 mm long, glabrous to sparsely villous; stigma thickened.

Fruit: Capsules green; 1.5–2 mm long; glabrous or sparsely tomentose; gynophores recurved; becoming erect just prior to dehiscence; exserted 1–2 mm from involucre; villous. Seeds gray to brown; 1–1.3 mm long; rugose.

Ploidy:

Habitat: Coastal vegetation and dry shrubland; apparently restricted to calcareous substrates.

Elevation Range: 5–200 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic
Molokai Endemic

Dispersal Agents


Pollinators

Bibliography

Other References

Wagner et al. 1990:615 (O, Mo [as Chamaesyce skottsbergii var. skottsbergii]); Govaerts et al. 2000:835/Yang & Berry 2011 (Syn. C. s. var. skottsbergii = E. s. var. skottsbergii); Morden & Gregoritza 2005 (remove Mo [re-IDed as E. s. var. audens])

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Coral plain. Preserved_Specimen Forbes, C.N. 2330 Oahu BISH 1916-03-14
2 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Coral plain under Algaroba. Preserved_Specimen Rock, J.F.C. 17034 Oahu BISH 1919-11-01
3 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Arid fossil reel Preserved_Specimen Degener, O. 8050 Oahu BISH 1932-05-08
4 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Dry coral flat, abundant. Preserved_Specimen Fosberg, F.R. 12810 Oahu BISH 1936-01-12
5 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Coral plain under Algaroba. Preserved_Specimen Rock, J.F.C. 17034 Oahu BISH 1919-11-01
6 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Scattered in Prosopis thicket with Sida, Leucaena, Chloris, and Verbesina in open shade and exposed areas Preserved_Specimen Nagata, K.M. 1655 Oahu BISH 1978-06-21
7 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Coral plain. Preserved_Specimen Forbes, C.N. 2330 Oahu BISH 1912-03-14
8 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1760 Oahu BISH 1912-02-16
9 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details On arid coastal, chiefly basic rocks. Forming slightly raised circular mats. Preserved_Specimen Degener, O. 8066 Molokai BISH 1928-04-28
10 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Along periphery of Prosopis forest Preserved_Specimen Char, W.P. 78.091 Oahu BISH 1978-09-09
11 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 2330 Oahu BISH 1916-03-14
12 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Skottsberg, C.J.F. 122 Oahu BISH 1922-08-11
13 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1768 Oahu BISH 1912-02-16
14 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 14 Molokai BISH 1912-06-01
15 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Lau, J. 2361 Oahu BISH 1986-05-05
16 Euphorbia skottsbergii var. skottsbergii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Takeuchi, W.N. Oahu BISH 1984-01-01