354 Litiacekz (Baker). [ Haworthia. 
margin ciliated with spreading lanceolate-cuspidate teeth y, in. 
long, not so numerous as in arachnoides and Bolusit; peduncle 
simple, 4 ft. long ; raceme lax, simple, } ft. long; pedicels very short ; 
bracts small, deltoid ; perianth 3-2 in. long; limb half as long as the 
_ tube. Baker in Journ. Linn. Soc. xviii. 216. Aloe setosa, Roem. 
et Schultes, Syst. Veg. vii. 641; Salm-Dyck, Aloe, sect. xii. fig. 3; 
Kunth, Enum. iv. 513. 
Van, f, nigricans (Haw. Revis. 56); leaves darker green; teeth more slender 
and more numerous. 
South A¥Fgica : without locality. 
Introduced into cultivation by Mackrell in 1818, 
60. H. xiphiophylla (Baker); leaves 50 or more in a dense 
sessile rosette, lanceolate, 2 in. long, 4 in. broad low down, pale 
green, not lineate, flat on the face, acutely keeled on the back, 
tapering to a pellucid awn }-3 in. long; margin with copious 
pellucid prickles »,—} in. long, which extend to the upper part 
of the keel; peduncle } ft. long; raceme lax, cernuous, 3-4 in. 
long; pedicels very short; bracts ovate, rather longer than the 
pedicels; perianth-tube oblong, 3 in. long; segments of the limb 
linear, obtuse, rather shorter than the tube; stamens and style not 
exserted from the perianth-tube. 
Coast Recion: Uitenhage Div., Howlett! 
gear cms from a living plant cultivated at Kew, introduced by Mr. Howlett in 
61. H. arachnoides (Haw. Syn. 96); leafy stem about 1} in, 
long ; rosettes 3-4 in. diam.; leaves 30-40, dense, multifarious, 
oblong-lanceolate, 13-2 in. long, 3-3 in. broad at the middle, § in. 
thick, pale glaucous green, pellucid and lineate on both sides in the 
upper third, flat on the face, rounded and keeled upwards on the 
back, tipped with a large pellucid awn; margin and keel ciliated 
with pellucid, lanceolate acuminate, spreading teeth 3,-} in. long; 
peduncle simple, 3—1 ft. long ; raceme lax, many-flowered, } ft. long; 
pedicels very short; bracts deltoid, exceeding the pedicels. Baker 
in Journ. Linn. Soc. xviii. 215, Aloe arachnoides, Miller, Gard. 
Dict. edit. viii. No. 17; Thunb. Fl. Cap. edit. Schult. 311; Haw. in 
Trans, Linn. Soc. vii. 10; DC. Plantes Grasses, t. 50; Bot. Mag. t. 
756 ; Salm-Dyck, Aloe, sect. xii. fig. 2; Kunth, Enum. iv. 513. 
Apicra arachnoides, Willd. in Ges. Naturf. Fr. Berl. Mag. v. 168. 
Catevala arachnoidea, Medic. Theod. 68. Aloe pumila, var. arach- 
noidea, Linn. Sp. Plant, 322. (A. africana humilis arachnoidea, 
Commel, Praelud. t. 27.) 
Coast Reoton: Uitenhage Div.; Karoo near Zwartkops Zoutpan, Thunberg ! 
Introduced into cultivation at the beginning of the eighteenth century. 
62. H. Bolusii (Baker in Journ. Linn. Soc. xviii, 215); leafy 
stem about 13 in. long; rosettes 21-3 in. diam.; leaves 30-40, 
