Compilation
Croton tinctorium

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Name

Identification
Croton tinctorium Forssk. [family EUPHORBIACEAE ] Verified by Not on Sheet, Chrozophora oblongifolia (Del.) Adr.Juss ex Sprengel [family EUPHORBIACEAE ] (stored under name); Verified by Käthe Hoffmann, Chrozophora obliqua Tackholm [family EUPHORBIACEAE ] Verified by Not on Sheet, Croton oblongifolium Del. [family EUPHORBIACEAE ] Verified by Not on Sheet,
Related name
  • Croton tinctorium
  • Chrozophora obliqua
  • Chrozophora oblongifolia
  • Croton oblongifolium

Flora

Entry for CHROZOPHORA oblongifolia A. Juss. ex Spreng. [family EUPHORBIACEAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical Africa, Vol 6, Part 1, page 441, (1913) Author: (By J. G. Baker, with additions by C. H. Wright.)
Names
CHROZOPHORA oblongifolia A. Juss. ex Spreng. [family EUPHORBIACEAE], Syst. Veg. iii. 850. —Decaisne in Ann. Sci. Nat. 2me sér. ii. 242; Baill. Étude gén. Euphorb. 322.
CHROZOPHORA obliqua Müll. Arg. [family EUPHORBIACEAE], in DC. Prodr. xv. ii. 749, excl. Wall. Cat. 7716 G; Schweinf. Beitr. Fl. Aethiop. 235, 262; Boiss. Fl. Orient. iv. 1141, excl. syn. Schweinf.; Hook. f. Fl. Brit. Ind. v. 409, Scinde plant only; Aschers. & Schweinf. Ill. Fl. Égypte, 138; Penzig in Atti Congr. Bot. Genova; 1892, 359; Pax in Ann. Istit. Bot. Roma, vi. 183; Cooke, Fl. Bomb. ii. 607; not of A. Juss.
CHROZOPHORA tinctoria Schweinf. [family EUPHORBIACEAE], Beitr. Fl. Aethiop. 36; not of A. Juss.
CHROZOPHORA obliqua Schweinf. var. incisa [family EUPHORBIACEAE], in Bull. Herb. Boiss. vii. App. ii. 306.
CHROZOPHORA obliqua Schweinf. var. angustifolia [family EUPHORBIACEAE], in Bull. Herb. Boiss. vii. App. ii. 306.
CHROZOPHORA tinctoria Boiss. var. subplicata [family EUPHORBIACEAE], Fl. Orient, iv. 1141, partly; Terracc. in Ann. Istit. Bot. Roma, v. 98; not of Müll. Arg.
Croton tinctorium Forsk. [family EUPHORBIACEAE], Fl. Ægypt.-Arab. cxxi.; not of Linn.
Croton oblongifolium Del. [family EUPHORBIACEAE], Desc. Egypt. Hist. Nat. ii. (Fl. Égypte) 139, t. 51, fig. 1; A. Juss. Tent. Gen. Euphorb. 28.
Information
A much-branched undershrub, with stems stout and woody below, but sometimes herbaceous and dying after flowering in the first year; stems rather harshly white or tawny stellate-pubescent. Leaves distinctly petioled, ovate-rhomboid or oblong to lanceolate, obtuse, base cuneate, narrowly notched, 2-glandular, margin usually more or less lobed or incised, rarely entire, 1–4 in. long, 1/3–2 in. wide, thinly and rather harshly stellate-pubescent above, more closely so beneath; petioles 1/4– 1/2 in. long, closely and coarsely stellate-pubescent; stipules linear, 1 lin. long, deciduous. Racemes short-peduncled, rather dense; lower female pedicels in fruit 1/2 in. long or rather longer. Male calyx globose in bud, closely and coarsely stellate-pubescent; lobes ovate-anceolate. Petals yellowish-white, lanceolate, shorter than the calyx-lobes. Stamens 5–10, 1–2-verticillate. Female sepals lanceolate. Petals linear, as long as the calyx-lobes. Capsule 3-coccous, blue-purple, about 1/2 in. wide, loosely clothed with floccose flat scales with fringed denticulate margins. Seeds rough.
Range
Also on the Egyptian coast, in Socotra, on the Arabian coast and in Scinde.
Distribution
Nubia Nile Land coast region, Schweinfurth, 936! 937! 937 bis! Bent! Jebel Garab and Jebel Dyb, Lusson, 493!Eritrea Nile Land Massowa, Deflers! Samhar, Rensch (Hildebrandt, 738)! Arkiko, Schweinfurth & Riva, 142! Anfilah, between Ras Madir and Haressan, Terracciano; Edd, Courbon!Abyssinia Nile Land Bembea, Schimper, 1692! Meda, Schimper, 1692 bis! Ennecoulon, Courbon, 323! Airuri, Stecker, 29! and without precise locality, Salt! Plowden!Somaliland Nile Land Berbera and vicinity, Boivin, 1074! Revoil, 131! Drake-Brockman, 69! 532! 533! 534! 535! coast near Lasgori and hills up to 3000 ft., Rensch (Hildebrandt, 869)! Tokosha, Ellenbeck, 146! Obok, Faurot!
Notes
Müller records this species as collected by Boivin in the Comoros, but the original field- accompanying the only gathering of the plant by Boivin gives the locality as Berbera in Somaliland. This species assumes two somewhat distinct forms, (a) with larger leaves, more obtusely lobed, met with everywhere within our area, and (b) with rather smaller acutely lobed leaves, more frequently met with from Suakin southwards. The second form, which includes the two varieties suggested by Schweinfurth, is, however, connected with the first by too many intermediates to admit of its being accorded separate recognition.

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