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Compilation
Synadenium arborescens

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Synadenium arborescens Boiss. published illustration from Curtis's Botanical Magazine
Synadenium arborescens Boiss. original illustration from Curtis's Botanical Magazine
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Name

Identification
Synadenium arborescens Boiss. [family EUPHORBIACEAE ]
Related name
  • Synadenium arborescens

Flora

Entry for SYNADENIUM arborescens Boiss. [family EUPHORBIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Capensis
Resource Type
Reference Sources
Entry From
Flora Capensis, Vol 5, Part 2, page 216, (1925) Author: (By N. E. BROWN, J. HUTCHINSON and D. PRAIN.)
Names
SYNADENIUM arborescens Boiss. [family EUPHORBIACEAE], in DC. Prodr. xv. ii. 187;—Hook. f. in Bot. Mag. t. 7184; Wood, Natal Pl. iii. t. 296.
Euphorbia arborescens E. Meyer [family EUPHORBIACEAE], in Drège, Zwei Pfl. Documente, 184, not of Roxb.
Euphorbia cupularis Boiss. [family EUPHORBIACEAE], Cent. Euphorb. 23.
Euphorbia synadenia Baill. [family EUPHORBIACEAE], Adans. iii. 142.
Information
a shrub 3–5 ft. high; branches terete, fleshy and green when young, finally woody, marked with leaf-scars, glabrous; leaves alternate, 2–4 in. long, 3/4–1 1/2 in. broad, cuneately obovate, acute or shortly cuspidate at the apex, cuneately tapering from above the middle into a short petiole, wing-keeled on the midrib beneath, glabrous on both sides; umbels axillary and terminal, 3/4–1 1/3 in. in diam., with 3–5 simple or once-forked rays; peduncles 5–9 lin. long, glabrous; rays 2–5 lin. long, puberulous; bracts under the involucre 1 1/2 lin. long, 1 3/4–2 lin. broad, cuneately subquadrate, truncate and with a few minute teeth at the apex, puberulous on both sides; involucre 2–3 lin. in diam., broadly funnel- or bowl-shaped, puberulous on the basal part, with a spreading or ascending entire rim-like gland and 5 subquadrate fringed puberulous lobes, greenish-yellow; ovary only seen in a very immature state and included in the involucre, densely pubescent; styles 1 1/2 lin. long, very shortly united at the base, deeply bifid at the apex, with spreading tips; capsule not seen. null
Distribution
EASTERN REGION Natal; in thickets near Umlazi River, below 500 ft., Drège, 4634! Inanda at 1800 ft., and in Durban Botanic Garden, Wood, 1623! 1651a! woods near Durban, Wood, 6377! 8492! Lower Umzimkulu River, 500 ft., Wood, and cultivated specimens!
Notes
Described from a living plant cultivated at Kew. A very poisonous plant. Mr. Wood states that when gathering specimens for the Herbarium, “after taking the precaution of covering his face, keeping at arm's-length from the plant and carefully washing hands and face as soon as the specimens were disposed of, he has felt the effects on the eyelids, nostrils and lips for several hours afterwards.” Under cultivation at Kew, however, it does not seem so virulent, as I and others have frequently handled the plant without feeling the slightest effects from so doing.

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