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This species is accepted, and its native range is Eritrea to S. Africa, SW. Arabian Peninsula.
A specimen from Kew's Herbarium

[FZ]

Crassulaceae, R. Fernandes. Flora Zambesiaca 7:1. 1983

Morphology General Habit
A perennial or biennial succulent herb up to 90 cm. high with a tuberous root producing one to many flowering stems, surrounded at base by dense rosulate leaves which usually disappear at anthesis.
Morphology Stem
Stem ± stout, erect, terete, simple, fleshy, from base to apex ± covered all around with retrose, appressed, whitish, ± long hair-like papillae (or papillae short, obtuse or acute, sometimes nearly bulliform), rarely glabrous, fleshy, green or reddish-purple.
Morphology Leaves
Rosette-leaves up to 16(20) x 2·5 cm., oblong-lanceolate or lanceolate, attenuate towards the acute apex, entire and ciliate or pectinate-ciliate at the margin (the cilia usually nearly contiguous, acute), sessile and connate at the base, flat, fleshy but not very thick, usually glabrous, sometimes papillose-pilose, green, sometimes with purple marks or ± purple beneath, deflexed; cauline leaves similar to the basal ones but usually smaller, the lower longer than the internodes, the upper successively shorter, becoming erect and ± clasping the stem, the upper cauline leaves sometimes ovate-lanceolate or elliptic-oblong, sometimes nearly bract-like; sheaths of lower cauline leaves 0·2-0·8(1·2) cm. long, those of the upper ones very short.
Morphology Reproductive morphology Flowers
Flowers 5-merous, arranged in a terminal, ± dense, up to 17(30) cm. in diam., corymbose, flat-topped inflorescence, with papillose or hairy branches; pedicels up to 15 mm. long, glabrous or nearly so.
Morphology Reproductive morphology Flowers Calyx
Calyx (2·5)3-5·5(6·5) mm. long, usually longer than 5 corolla to equalling it; sepals 1-1·25 mm. broad, lanceolate to linear-lanceolate, very attenuate, ± acute, Sérrulate or denticulate to ciliate-pectinate at the margins (cilia acute, ± rigid), or entire, green or reddish-purple.
Morphology Reproductive morphology Flowers Corolla
Corolla (4·5)5·7 mm. long; petals 1·25-2 mm. broad, oblong, obtuse or subacute, erect but with ± reflexed or spreading tips, mucronate below the slightly inflexed apex, sometimes minutely scabrid outside towards the apex, white, greenish-white flushed with pink or bright to deep red.
Morphology Reproductive morphology Flowers Androecium Stamens
Filaments (2)2·5-3(3·5) mm. long; anthers (0·5)-0·75(1) mm. long, rectangular.
Morphology Reproductive morphology Fruits
Follicles (2·75)3-5-5·5 mm. long including the styles.
Morphology General Scales
Scales ± 0·5 mm. long, rectangular or subquadrate, truncate.

[FTEA]

Crassulaceae, G.E. Wickens. Flora of Tropical East Africa. 1987

Morphology General Habit
Biennial or perennial rosette herb with tuberous root.
Morphology Stem
Stems annual, dying back after flowering, erect, usually simple, up to 60(–90) cm. high, terete, 2–5(–20) mm. in diameter, papillose pubescent, rarely glabrous; papillae retrorse appressed, whitish, elongate or short.
Morphology Leaves
Rosette leaves usually disappearing by anthesis, linear-lanceolate, lanceolate or oblong-lanceolate, up to 16(–20) cm. long, 0.5–2.5 cm. wide, apex attenuate-acute, bases of opposite leaves united to form a sheath around the stem up to 1(–1.5) cm. long, usually glabrous above, papillose-pubescent becoming glabrescent or glabrous beneath, margins entire, papillose ciliate; cauline leaves similar, blades, sheaths and internodes shortening towards the apex.
Morphology Reproductive morphology Inflorescences
Inflorescence a terminal, repeatedly dichotomous, usually rather dense flat-topped corymbose cyme with foliaceous bracts, rarely with axillary inflorescences in the axils of the upper leaves; pedicels up to 15 mm. long, glabrous or nearly so.
Morphology Reproductive morphology Flowers
Flowers 5-merous.
Morphology Reproductive morphology Flowers Calyx
Calyx-lobes lanceolate to ovate-lanceolate, 2.5–4(–6.5) mm. long, 1–1.3 mm. wide, acute, margins with few-many ± contiguous papillae (papillae larger than in C. vaginata).
Morphology Reproductive morphology Flowers Corolla
Petals white or greenish white or bright to deep red, oblong, (3–)3.5–8 mm. long, (1.2–)1.5–2(–2.5) mm. wide, obtuse to subacute, thickened and mucronate, margins entire, glabrous and minutely papillose-ciliate.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamen-filaments (2–)2.5–3(–5) mm. long; anthers oblong, 0.5–0.8 mm. long.
Morphology Reproductive morphology Flowers Nectaries
Nectary scales rectangular to almost square, ± 0.5 mm. high, truncate.
Morphology Reproductive morphology Flowers Gynoecium Carpels
Carpels oblong, (2.7–)3.5–5.5 mm. long, narrowing into styles about one-quarter the length of the ovaries, indistinctly papillose-ciliate or glabrous along the suture.
Morphology Reproductive morphology Seeds
Seeds 8–30 per carpel, broadly oblong, ± 0.5 mm. long, ± 0.3 mm. wide, minutely longitudinally rugulose (indistinguishable from those of C. vaginata).
Figures
Fig. 2A, p. 14.
Habitat
Rock crevices and rocky outcrops; (450–)1500–2670 m.
Distribution
K1 K3 K4 K6 T1 T7 U2

[FWTA]

Crassulaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:1. 1954

Morphology General Habit
Erect herb to 3 ft. high. with stout stem
Morphology Reproductive morphology Flowers
Flowers white.

Native to:

Burundi, Cape Provinces, Eritrea, Ethiopia, Free State, Kenya, KwaZulu-Natal, Lesotho, Malawi, Mozambique, Northern Provinces, Saudi Arabia, Sudan, Swaziland, Tanzania, Uganda, Yemen, Zimbabwe

Crassula alba Forssk. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Mar 1, 1979 Schimper [931], Ethiopia K000310079 Unknown type material
Mar 1, 1979 Schimper [1609], Ethiopia K000310080 Unknown type material
Mar 1, 1979 Quartin-Dillon [45], Ethiopia K000310082 Unknown type material
Brenan, J.P.M., Cameroon 10521.000
Milne-Redhead, E. [4407], Zambia 10526.000
Collenette, I.S., Saudi Arabia 39155.000
Radcliffe-Smith, A. [4390], Yemen 51946.000

First published in Fl. Aegypt.-Arab.: 60 (1775)

Accepted by

  • Govaerts, R. (1999). World Checklist of Seed Plants 3(1, 2a & 2b): 1-1532. MIM, Deurne.
  • Hedberg, I. & Edwards, S. (eds.) (1989 publ. 1990). Flora of Ethiopia and Eritrea 3: 1-659. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Hutchinson, J., Dalziel, J.M. & Keay, R.W.J. (1954-1958). Flora of West Tropical Africa, ed. 2, 1: 1-828.
  • Launert, E. (ed.) (1983). Flora Zambesiaca 7(1): 1-394. Royal Botanic Gardens, Kew.
  • Miller, A.G. & Cope, T.A. (1996). Flora of the Arabian peninsula and Socotra 1: 1-586. Edinburgh university press.
  • Wickens, G.E. (1987). Flora of Tropical East Africa, Crassulaceae: 1-66.
  • Wood, J.R.I. (1997). A handbook of the Yemen Flora: 1-434. Royal Botanic Gardens, Kew.

Literature

Flora of West Tropical Africa

  • Fl. Aegypt.-Arab. 60 (1775).

Kew Backbone Distributions

  • Miller, A.G. & Cope, T.A. (1996). Flora of the Arabian peninsula and Socotra 1: 1-586. Edinburgh university press.

Flora of Tropical East Africa

  • A.D.Q. Agnew, Upland Kenya Wild Flowers p. 104, fig. on p. 108 (1974).
  • Berger in A. Engler & K. Prantl, Die Natürlichen Pflanzenfamilien, ed. 2, 18a: 394 (1930).
  • Blundell, Wild Fl. Kenya: 30, photo. 68 (1982).
  • Cuf. in Senck. Biol. 39: 123 (1958).
  • Cufod., Enumeratio Plantarum Aethiopiae Spermatophyta (Supplement in Bull. Jard. Bot. Brux.) p. 69 (1954), pro parte.
  • DC., Prodr. 3:390 (1828).
  • Forssk., Fl. Aegypt.-Arab.:60 (1775).
  • Hepper in Flora of West Tropical Africa, ed. 2, 1: 116 (1954), pro parte quoad syn.
  • Jacobsen, Lex. Succ. Pl.: 156 (1974), excl. syn. C. mannii et C. schweinfurthii.
  • O. Hedberg, Afroalpine Vascular Plants p. 101 (1957) pro syn. C. abyssinica.
  • R. Fernandes in Flora Zambesiaca 7: 27, t. 4A (1983).
  • Schweinf. in Bull. Herb. Boiss. 4, App. 2:197 (1896).
  • Tölken in Contrib. Bolus Herb. 8: 362 (1977).
  • Wickens in Kew Bulletin 36: 669 (1982).

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of West Tropical Africa
Flora of West Tropical Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0