1954] 



PLANTS COLLECTED IN NYASALAND 



435 



43: 359-60. 1909) are significant must be decided by more ample material and by 

 careful observation in the field. For the present I would prefer merely to regard 

 this plant as a variable species. 



Crassula ? rosularis Haw. Rev. PI. Succ. 13. 1821; Schonl. Trans. Roy. Soc. S. 

 Afr. 17: 243. 1929. 



A photograph and a specimen in the Herbarium of the Royal Botanic Gardens, 

 Kew, of a cultivated plant in the New York Botanical Garden, said to have been 

 collected by Mr. Brass on the Vernay Nyasaland Expedition, may be C. rosularis^ 

 but the material is insufficient for certainty. C. rosularis has hitherto been con- 

 sidered to occur only in South Africa. 



Crassula ? argyrophylla Diels ex Schonl. & Bak. f. Jour. Bot. 40: 290. 1902; 

 Schonl. Trans. Roy. Soc. S. Afr. 17: 258. 1929. 

 Zomba District: Zomba Plateau, in shallow soil on exposed or half-shaded dry 

 rocks, herb, flowers white, 1500 m., June 10, 1946, 16329*, Mlanje District: 

 Mlanje Mountain, west slope, scattered or grouped on dry open rock-faces, herb 

 15-20 cm. high, leaves thick and fleshy, flat or more or less convex, often red- 

 dish, flowers white, 1420 m., June 24, 1946, 16412. Kota-kota District: Chenga 

 Hill, gregarious on dry exposed rocks, 10-15 cm. high, flowers white, an attrac- 

 tive species, 1600 m., Sept. 9, 1946, 17611. Nyasaland ?, S. Rhodesia to South 

 Africa. 



The differences between Nyasaland plants and those from South Africa — the 

 leaves of the former usually more hairy, with a strong tendency to become sub- 

 orbicular — are probably of no great systematic importance, but it seems wiser not 

 to be too confident about the identification until more abundant material is avail- 

 able from the whole geographical range of the species. Plants similar to those of 

 Mr. Brass have been previously collected in Nyasaland (Purves 111 in Herb. 

 Kew.). I suspect that Crassula illichiana Engl, ex Engl. & Diels, Bot. Jahrb. 39: 

 465 (1907), described from the Usambara Mountains in Tanganyika Territory, may 

 be another form or variety of C. argyrophylla with more hair than usual. 



Kalanchoe lanceolata (Forsk.) Pers. Syn. 1: 446. 1805; Raymond-Hamet, Bull. 

 Herb. Boiss. II. 8: 32. 1908. 

 Cotyledon lanceolata Forsk. Fl. Aegypt,-Arab. 89. 1775. 



Kota-kota District: Nchisi Mountain, in shallow soil on dry rocks in Brachy- 

 stegia woodland, herb 20-60 cm. high, flowers orange-yellow, panicle viscid- 

 pubescent, fruiting calyx reddish, 1400 m., Aug. 5, 1946, 17134. Chikwawa Dis- 

 trict: Chikwawa, occasional in dry brushy forest of elevated alluvial plain, annual 

 herb 60-80 cm. high, fleshy, leaves mostly dry, flowers orange°red, 200 m., Oct. 

 2, 1946, 17887. Anglo-Egyptian Sudan to S. Rhodesia, Angola, and Nigeria; also 

 in Arabia and India. 



Kalanchoe lateritia Engl. Pflanzenw. Ost=Afr. C: 189 (1895) var. zimbabwensis 

 (Rendle) Brenan, comb. nov. 

 Kalanchoe zimbabwensis Rendle, Jour. Bot. 70: 90. 1932. 



Mlanje District: Likubula Gorge, rocky places in Brachystegia woodland, herb 

 20-40 cm. high, fleshy, leaves reddish, flowers yellow, attractive, 840 m., July 

 18, 1946, 16879. The species in Kenya and Tanganyika Territory, the variety in 

 Nyasaland and S. Rhodesia. 



This plant belongs to a complex which Raymond°Hamet in his monograph of 

 Kalanchoe (Bull. Herb. Boiss. II. 8: 36, 1908) grouped under the specific name 

 K. velutina Welw. ex Britten, which, however, appears to represent a distinct spe- 

 cies that I have only seen from Angola. The next available name seems to be 

 K. lateritia Engl., based on a plant from Tanganyika Territory and Kenya with 

 usually ± laxly branched inflorescences and often narrow and acuminate calyx- 



