Euphorbia skottsbergii

Sherff (1936)

This name is accepted

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

‘akoko [akoko], ‘ekoko [ekoko], koko, kōkōmālei [kokomalei]

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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 or elliptic to oblanceolate, (5–)12–25(–32) 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

Images

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic
Molokai Endemic
Kaho'olawe Endemic
Maui Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Bot. Gaz. 97: 588 (1936)

Occurrences

SNo. Scientific Name Scientific Name Authorship Locality Habitat Basis of Record Recorded By Record Number Island Source Date
1 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN c. n. forbes 1760 Oahu F 2/12/1912
2 Euphorbia skottsbergii Sherff east maui, ca 15 km s of kipahulu PRESERVED_SPECIMEN palmer, r. 507 DUKE 5/8/1994
3 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN c. n. forbes 2330 MO 3/14/1916
4 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN C. N. Forbes 1760 Oahu F 2/12/1912
5 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN O. Degener 8050 Oahu F 5/8/1932
6 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN C. N. Forbes 14 Molokai F 6/1/1912
7 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN O. Degener 8068 F
8 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN o. degener 8068 F
9 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN c. n. forbes 14 Molokai F 6/8/1912
10 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN O. Degener 8066 Molokai F 4/28/1928
11 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN o. degener 8066 Molokai F 4/28/1928
12 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN o. degener 8050 LSU 5/8/1932
13 Euphorbia skottsbergii Sherff PRESERVED_SPECIMEN C. N. Forbes 2330 Oahu F 3/14/1916