Haworthia. | LILIACEE (Baker). 343 
Radula, Jacq. Hort. Schoenbr. iv. 11, t. 422; Salm-Dyck, Aloe, 
sect. vi. fig. 8; Kunth, Enum. iv. 504. Apicra Radula, Willd. in 
Ges. Naturf. Fr. Berl, Mag. v. 270. 
Sourn Argica: without locality, living cultivated plants! 
Introduced into cultivation at the beginning of the present century. 
24. H. subulata (Baker in Journ. Linn. Soc. xviii. 206) ; leafy 
stem short ; rosette of leaves 5-6 in. diam. ; leaves 30-40 in a dense 
multifarious rosette, lanceolate-deltoid, very acuminate, 3-4 in, long, 
{+1 in. broad, } in, thick, green when young, red-brown when old, 
flat and scabrous on the face, with concolorous tubercles rounded on 
the back and keeled towards the apex, rugose all over the back with 
crowded, small white-tipped tubercles; peduncle branched, 2-3 ft. 
long including the inflorescence; racemes lax, about 3 ft. long ; 
pedicels 3—} in. long ; bracts small, deltoid; perianth 2 in. long ; limb 
half as long as the tube. Aloe subulata, Salm-Dyck, Hort. 324; Aloe, 
sect. vi. fig.10; Kunth, Enum.iv.504. H. Radula var. levior, Haw. 
Revis. 54. 
SovrH ArFrica: without locality. 
First described from the Vienna collections in 1814. 
25. H. rugosa (Baker in Journ. Linn. Soc, xviii. 206) ; leafy 
stem short; rosette of leaves 5-6 in. diam.; leaves 30-50, crowded, 
multifarious, very acuminate, lanceolate-deltoid, 3-4 in. long, 3-1 in. 
broad, } in. thick, green, flat on the face, rounded on the back and 
keeled upwards, scabrous all over both faces with whitish tubercles, 
larger and less crowded than those of H. Radula; peduncle branched, 
2-3 ft. long including inflorescence ; racemes lax, about 4 ft. long; 
pedicels 1-1 in, long ; bracts small, deltoid ; perianth } in. long ; limb 
half as long as the tube. Aloe rugosa, Salm-Dyck, Hort. 323; 
Aloe, sect. vi. fig. 9; Kunth, Enum. iv. 504, H. Radula var. 
asperior, Haw. Revis, 54. 
Sours Arnica: without locality. 
First described from the collection of the Emperor Francis, at Vienna, in 1814. 
26. H. albicans (Haw. Syn. 91); leafy stem short ; rosette of 
leaves 5-6 in, diam.; leaves about 30 in a dense multifarious 
rosette, ovate-lanceolate, 2}-3 in. long, 1j-1} in. broad, j-} in. 
thick, rather recurved, whitish- , quite smooth on both surfaces, 
rigid in texture, concave on the face, rounded on the back, keeled 
towards the apex; margins smooth, whitish, horny; peduncle 
simple or branched ; racemes } ft. long ; pedicels 2-j in. long; bracts 
small, ovate; perianth ? in. long; limb half as long as the tube. 
Baker in Journ. Linn. Soc. xviii. 207. Aloe albicans, Haw. in 
Trans. Linn. Soe. vii. 8; Ker in Bot. Mag. t. 1452 3; Salm-Dyck, 
Aloe, sect. v. fig. 1; Kunth, Enum. iv. 500. Apicra albicans, Willd. 
in Ges. Naturf. Fr. Berl. Mag. v. 271. H. laevis and H. ramifera, 
Haw. Revis. 52. Aloe marginata, Lam. Encyc. i. 89. A. levigata, 
Roem. et Schultes, Syst. Veg. vii. 636. 
