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Compilation
Euphorbia arceuthobioides

4 Images see all

Isotype of Euphorbia mixta N.E. Br. [family EUPHORBIACEAE]
Isotype of Euphorbia arceuthobioides Boiss. [family EUPHORBIACEAE]
Filed as Euphorbia arceuthobioides Boiss. [family EUPHORBIACEAE]
Filed as Euphorbia arceuthobioides Boiss. [family EUPHORBIACEAE]
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Name

Identification
Isotype of Euphorbia mixta N.E. Br. [family EUPHORBIACEAE ] (stored under name); Verified by HBG-formal name entry, 2010 Euphorbia arceuthobioides Boiss. p.p. [family EUPHORBIACEAE ] Verified by Not on sheet, Isotype of Euphorbia arrecta N.E. Br. non N.E. Br. 1914 [family EUPHORBIACEAE ] Verified by HBG-formal name entry, 2010
Related name
  • Euphorbia arrecta
  • Euphorbia arceuthobioides
  • Euphorbia tirucalli
  • Euphorbia mixta

Flora

Entry for EUPHORBIA arceuthobioides 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
EUPHORBIA arceuthobioides Boiss. [family EUPHORBIACEAE], Cent. Euphorb. 20, and in DC. Prodr. xv. ii. 76
EUPHORBIA Tirucalli Thunb. [family EUPHORBIACEAE], Prodr. 86, and Fl. Cap. ed. Schult. 405, partly, as to the right-hand specimen on sheet 3 of his Herbarium, not of Linn.
EUPHORBIA scopiformis Boiss. [family EUPHORBIACEAE], (serpiformis), in DC. Prodr. xv. ii. errata and 75, partly.
Arthrothamnus Ecklonii Klotzsch & Garcke [family EUPHORBIACEAE], in Abhandl. Akad. Berlin, 1860, 63, as to Ecklon & Zeyher, 23, and 24 partly, not as to 25, nor description.
Arthrothamnus scopiformis Klotzsch & Garcke [family EUPHORBIACEAE], l.c. 63.
Tithymalus tuberosus, aphyllus, &c. Burm. [family ], Rar. Afr. Pl. 11, t. 5.
Information
a much-branched succulent bush, 3/4–1 ft. high, leafless and spineless, unisexual; main stems 1 1/2–2 lin. thick at the base; main branches in 3–4 pairs, opposite, 1/2–1 lin. thick when dried, variably diverging, dichotomously and trichotomously forking into numerous branchlets, often variably curved, terete, usually slightly rough from minute papilla-like and mostly laterally compressed tubercles; leaves rudimentary, opposite, sessile or subsessile, often recurved, 2/3–1 lin. long, broadly ovate, oblong or oblong-obovate, very obtuse or subapiculate, usually with a small tooth or angle on each side near the base, slightly concave and puberulous on the upper surface, convex and glabrous on the back, dark brown, persistent; cymes once or twice forked, their ultimate branchlets 1 1/2–9 lin. long, 1-flowered; bracts shorter than the involucre, 3/4–1 lin. long, somewhat obovate or subspathulate or like the leaves; involucre unisexual, 1 1/4–1 3/4 lin. in diam. cup-shaped, very minutely puberulous at the very base, otherwise glabrous outside, with 5 glands and 5 oblong fringe-toothed lobes; glands 1/3– 3/4 lin. in their greater diam., transversely oblong, entire; capsule 2 lin. in diam., glabrous, with a circular disc-like calyx at its base and just exserted beyond the involucre; styles very shortly united at the base, with radiating arms 2/5 lin. long, bifid to below the middle; seeds about 1 lin. long, ovoid, subobtuse at the apex, truncate at the base, rugose. null
Distribution
COAST REGION Clanwilliam Div.; near Brakfontein, Ecklon & Zeyher, Euphorb. 24 partly! Tulbagh Div.; Piquetberg Road (Gouda), Schlechter, 4850! Cape Div.; near Cape Town, Thunberg! Harvey, 25! Riet Valley, Bergius! Camps Bay, Prior! Green Point, Prior! Lion Mountain, Froembling, 124! above the road beyond Sea Point, Wolley-Dod, 1777! Cape Flats, Mund & Maire! Stellenbosch Div.; near Somerset West, Ecklon & Zeyher, Euphorb. 23! Lowrys Pass, Schlechter, 7215!
Notes
According to reports received from Dr. Marloth and Major Wolley-Dod, this species would appear to be now very scarce in the vicinity of Cape Town, and the female plant is decidedly rare, as only two of the specimens seen are of that sex. The specimen collected by Bergius in Riet Valley is the type of Arthrothamnus scopiformis, Klotzsch & Garcke, and is identical with the type of Euphorbia arceuthobioides, Boiss. Both of these names were published in 1860, and in the same year the name E. scopiformis, Boiss., was also published. But as this name seems to have been actually published at a later date than that of E. arceuthobioides and as Boissier included under it (according to the specimens he quotes) two distinct species, one of them being E. arrecta, N. E. Br., it seems advisable to adopt the name E. arceuthobioides in preference to that of E. scopiformis, Boissier. under E. arceuthobioides, quotes the collectors of the type as Ecklon & Zeyher, 76, he has here, however, mistaken the locality number for the distribution number, which should be Ecklon & Zeyher, 24 partly, the number 76 which appears on the label is merely the locality number, and indicates that the plant was collected near Brakfontein, by the Olifants River, see Linnæa, xix. 583 and 589. The other part of Ecklon & Zeyher, 24, belongs to E. rhombifolia, var. cymosa, N. E. Br., and comes from another region. Some specimens collected on Hex River Mountains in Worcester Div. (Drège, 8204, Tyson, 649) are nearly related to E. arceuthobioides, but appear to be distinct, the material at my disposal is, however, insufficient to decide this point. The Hex River plant requires to be compared in the living state with E. arcenthobioides to form a correct opinion.

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