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Euphorbia herbstii

(W.L.Wagner) Oudejans (1989)

This name is accepted

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

Description

Key Characters:

Growth Form: Small trees 3–8 m tall, diffusely branched in upper parts, glabrous.

Stems:

Roots:

Leaves: Leaves simple. Opposite, distichous. Blades narrowly oblong or sometimes narrowly oblong–oblanceolate or narrowly oblong–elliptic, (6–)8–19.5 cm long, 1.8–3.8 cm wide. Apex bluntly acute to broadly obtuse, usually minutely emarginate. Base obliquely rounded or obliquely cuneate. Surfaces glabrous or puberulent at base; blade, thin, coriaceous. Margins entire. Petioles (1.5–)2–5 mm long, sparsely puberulent or glabrous. Stipules deltate, 1.5–3 mm long, erose.

Flowers: Flowers in cyathia 3–15 in branched, open, cymose inflorescences 7–17 cm long, peduncles 8–20 mm long, puberulent. involucre broadly campanulate, 1.5–2.5 mm high, 3.5–5 mm wide, puberulent, the glands 5–6, yellowish green, upper surface glabrous, lower surface puberulent, usually with a white appendage. 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, 3-carpellate; ovules 1 per cell, anatropous.

Fruit: Capsules green or sometimes tinged reddish purple; especially on angles; angled; 5–10 mm long; up to 8 mm in diameter; scarcely exserted from involucre; gynophores green; erect; exserted ca. 1 mm from involucre; puberulent. Seeds gray; broadly ellipsoid; 2.5–3 mm long; seed coat wrinkled.

Ploidy:

Habitat: Diverse mesic forest.

Elevation Range: (360–)500–760 m.

Historical Distribution

Uses and Culture

USES

Natural History

Statewide Status

Endemic

Island Status

O'ahu Endemic

Dispersal Agents


Pollinators

Bibliography

Name Published In: Phytologia 67: 46 (1989)

Other References

Wagner et al. 1990:609 (O [as Chamaesyce herbstii]); Oudejans 1989:46/Govaerts et al. 2000:745/Yang & Berry 2011 (COMBNOV, Syn. C. herbstii = E. herbstii)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. Oahu BISH 1912-04-26
2 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Herat, T. 532 Oahu BISH 1973-09-30
3 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Swezey, O.H. Oahu BISH 1933-09-15
4 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Krauss, N.H. Oahu BISH 1933-09-16
5 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Oahu BISH
6 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Oahu BISH
7 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Lamoureux, C.H. 2433 Oahu BISH 1963-10-20
8 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Gustafson, R. Oahu BISH 1985-01-01
9 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details In Oahu diverse mesic forest with Alectryon, Elaeocarpus, Pouteria, Antidesma, Pisonia, Charpentiera, Melicope, Freycinetia, Claoxylon, Hibiscus, Pipturus, Passiflora suberosa, Labordia, Platydesma, Athyrium sandwichianum, Neraudia. Preserved_Specimen About 11 plants, 3 are large 6-8 inc diameter. Perlman, S. 6109 Oahu BISH 1987-06-28
10 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details In shade of Pisonia, Xylosma, Metrosideros near foot of small spur in south section of gulch Preserved_Specimen Small tree 4.5 m height, 7.5 cm dbh Nagata, K.M. 1550 Oahu BISH 1978-01-31
11 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Rich shaded gulch. Preserved_Specimen 9-15 ft erect trees. Degener, O. 27927 Oahu BISH 1962-04-23
12 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details In Acacia koa-Metrosideros lowland mesic forest with Pouteria, Pittosporum, Rauvolfia, Ochrosia, Eugenia reinwardtiana, Nestegis, Pteralyxia, Schinus, Flueggea, Hibiscus, Alectryon, Isodendrion. Preserved_Specimen Perlman, S. 6294 Oahu BISH 1987-08-13
13 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Above trails near Pteralyxia Preserved_Specimen Welton, P. 585 Oahu BISH 1990-09-16
14 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Small colony on embankment. Preserved_Specimen Montgomery, S.L. 1440 Oahu BISH 1969-12-06
15 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Small colony in measic forest remnant, c. 45 degree slopes with talus slides interspersed over clay banks, native overstory with Pisonia sandwicensis, Urera glabra, cont. Preserved_Specimen Erect but weak-stemmmed shrubs generally 3-4 m height Team 3746 Oahu BISH 1988-01-24
16 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Native rainforest in deep valley. Preserved_Specimen Small tree 3-4 m high, 3-4 cm diam.; bark moderate rough, gray brown; sapwood with slight latex; heartwood brownish pith soft; flower white and yellow green; fruit pinkish Bryan Jr., E.H. 820 Oahu BISH 1934-10-09
17 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Dense woody vegetation; clay soil Preserved_Specimen A tree with milky sap, opposite leaves Gillett, G.W. 1510 Oahu BISH 1964-02-22
18 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Partly shaded gulch. Preserved_Specimen Up to 15 ft tree with few spreading-drooping branches. Unripe fruit white with bright red carinae. Degener, O. 20699 Oahu BISH 1950-07-30
19 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Colony is 60 m below connector trail between Sophora tree and main S ridge; mixed mesic forest w/ Alectryon, Planchonella, Urera glabra, Pisonia, Bobea, Psychotria, cont. Preserved_Specimen 10 plants +, 2-4.5 m tall; most southern colony of what was call Euphorbia forbesii Perlman, S. 5111 Oahu BISH 1987-01-15
20 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details In Acacia koa-Metrosideros lowland mesic forest with Pouteria, Pittosporum, Rauvolfia, Ochrosia, Eugenia reinwardtiana, Nestegis, Pteralyxia, Schinus, Flueggea, Hibiscus, Alectryon, Isodendrion. Preserved_Specimen Perlman, S. 6294 Oahu BISH 1987-08-13
21 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Moist forest Preserved_Specimen Trees 5 m tall; many of them near bottom of gulch here Fosberg, F.R. 13073 Oahu BISH 1936-04-12
22 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Gulch where Psidium cattleianum is invading. Native species include Hibiscus arnottianus, Labordia kaalae & Myrsine lessertiana. Preserved_Specimen Welton, P. 403 Oahu BISH 1990-04-07
23 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details In shaded gully; associated with Metrosideros, Gouldia, Coprosma, Pteralyxia Preserved_Specimen Small tree, about 15 ft tall; foliage glossy, dark green above; pale, dull below; fruit green, turning brown when mature Herbst, D.R. 1470 Oahu BISH 1969-12-27
24 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Russ, G.W. Oahu BISH 1932-07-01
25 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Shrub ca 6 ft tall. Rare. Herat, T. 484 Oahu BISH 1973-07-23
26 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Trees 8 diam. Swezey, O.H. Oahu BISH 1934-10-09
27 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Forbes, C.N. 1770 Oahu BISH 1912-04-26
28 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Preserved_Specimen Skottsberg, C.J.F. 384 Oahu BISH 1922-08-30
29 Euphorbia herbstii Locality redacted. Contact Bishop Museum Botany Department for details Habitat generally dry, 45 degree slope. Soil mixed with talus rock. With Pisonia, Pipturus, Urera, Streblus and understory mostly of Athyrium ferns, 15 native trees, several seedlings and saplings. Largest tree 4.5 m x 15 cm. Preserved_Specimen Funk, E.J. 80 Oahu BISH 1978-09-17
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