COMPOSITA, | 109 
2. Carphephorus? triangularis, A. Gr. Pl. Wright. i. p. 86. 
Bulbostylis triangularis, DC. Prodr. vii. p. 268. 
Mexico (Henke). 
Tribe III. ASTEROIDE. 
Asteroidee, Benth. et Hook. Gen. Plant. ii. pp. 165, 174. 
Ninety-one genera are referred to this tribe, which has the range of the whole order. 
Many of the genera are very numerous in species, some of which are arboreous. 
32. GYMNOSPERMA. 
Gymnosperma, Less. Syn. Comp. p. 194; Benth. et Hook. Gen. Plant. ii. p. 249. 
Selloa, Spreng., non H. B. K., ex DC. Prodr. v. p. 311. 
An exclusively Mexican and Texan genus of undershrubs. 
1. Gymnosperma corymbosum, DC. Prodr. v. p. 312. 
Trxas.—NortH Mexico, Santa Catarina, near Monterey (Berlandier, 1385), region of 
San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 365), San Luis Potosi to Tampico 
(Palmer, 1088) ; Soura Mexico, Santa Fé (Bourgeau, 388), Chapulco (Liebmann, 268). 
Hb. Kew. 
2. Gymnosperma eriocarpum, A. Gr. Pl. Wright. i. p. 94. 
Texas.—Norta Mexico, along the Rio Grande (Berlandier). Ub. Kew. 
3. Gymnosperma multiflorum, DC. Prodr. v. p. 312. 
SovtH Mexico, around the city of Mexico (Berlandier, 50), Cordillera of Oaxaca, 5000 
to 7000 feet (Galeotti, 2145), Vera Cruz to Orizaba (Miller, 1633), without localities 
(Jurgensen, 286, and several other collectors). Hb. Kew. 
4, Gymnosperma scoparium, DC. Prodr. v. p. 312. 
Nort Mexico, San Luis Potosi (Berlandier, 1338). 
33. XANTHOCEPHALUM. 
Xanthocephalum, Willd. in Ges. nat. Fr. Berl. Mag. 1807, P- 140; Benth. et Hook. Gen. Plant. ii. 
p. 249. 
Xanthocoma, H. B. K. Nov. Gen. et Sp. iv. p. 310, t. 412. 
Herbs and undershrubs. Besides the following there is one species in Ecuador. 
1. Xanthocephalum alamani, Benth. et Hook. Gen. Plant. ii. p. 249. 
Gutierrezia alamani, A. Gr. Pl. Wright. i. p. 91, adnot. 
Keerlia linearifolia, DC. Prodr. v. p. 310. 
Mexico (Alaman, Ghiesbreght, Mackenzie). Hb. Kew. 
Mackenzie’s specimen in Kew Herbarium is probably an entire-leaved state of X. cen- 
_tauroides, Willd. 
