Plants Collected in the Percy Sladen Memorial Expeditions. 51 



sides of the Holle Eiver ravine, 2,600 ft. Also at Loeriesfontein, 

 4888; 10.12.08." 



" Karroo Region. Pappekuil, 950 ft., 3910 ; 4.12.08." 



" Little Namaqualand. Rocky slopes at Eenriet, 3,000 ft., 3100; 

 15.1.09." " Lowest slopes of Sneeuwkop, 5871 ; 12.12.10." " A 

 few miles noi'th of Nieuwe Rust, 5542; 4.12.10." " Richtersveld ; 

 Under bushes, upper middle slopes of TcAlee Mountains, 6146 ; 

 2.1.11." 



The varieties of this species founded by Harvey in Fl. Cap., ii., 

 p. 351, on Ecklon and Zeyher's species of Tetraphyle, are very 

 difficult to separate. 



3910 and 4888 are close to the type. 6146, 5871 and 5542 may 

 be placed under var. polpodacea, Harv. (Tetraphyle polpodacea, E. et 

 Z., Enum., p. 293). 3100 is an exceptionally robust form (with 

 leaves 6 mm. long), and comes close to var. obtusifolia, Harv. 

 (Tetraphyle littoralis and T. propinqua, E. & Z., Enum., p. 293). 



14. C. glomerata, L., Mant., 20; Harvey, in Flora Cap., ii., 

 p. 352. 



" Cape Region. Marshy ground, south slopes above Pickenier's 

 Pass, 5179 ; 24.11.10." 



15. C. corallina, Thunb., in Nova Acta, vi. (1778), 334 (Or. 

 dasyphylla, Harv., in Flora Cap., ii., p. 355). 



" Bushmanland. Aggenys. Common on sand at foot of hills. 

 Also at Wortel, 2945 ; 7.1.09." 



" Little Namaqualand, Richtersveld. Sandy plains near south 

 edge of Stinkfontein plateau, 6204 ; 4.1.11." 



There can hardly be any doubt that this is Thunberg's plant, 

 which was meant by Harvey as his Cr. dasyphylla. It seems, how- 

 ever, that the latter also included a species from the eastern parts of 

 Cape Colony which is perhaps distinct, though closely allied, and 

 which I have described as Cr. Simiana, Schonl., in Journ. Linn. Soc. 

 (Bot.), xxxi., 1897. 



It may be mentioned that the plant called Tetraphyle corallina by 

 Ecklon and Zeyher (Enum., p. 293), for which they quote as a 

 synonym Cr. corallina, Thunb., does not belong to the genus 

 Crassula. It is Anacampseros ustulata. 



16. C. expansa [Di-yander in], Aiton Hort. Kew, i., p. 390, 



