RHAMNACEZ. 199 
14. Rhamnus, sp. 
Sourn Mexico, Orizaba (Botteri, 943, 1021 ; Bilimek, 357), Orizaba (Bourgean 2496), 
Jalapa (Coulter, 7; Galeotti, 7070). Hb. Kew. 
6. CEANOTHUS. 
Ceanothus, Linn. Gen. Plant. n. 267; Benth. et Hook. Gen. Plant. i. p. 378. 
About thirty species of shrubs and small trees, confined to Temperate North America, 
Mexico, and Central America. Four occur in the Atlantic States, and the others on 
the western side of the Rocky Mountains. 
1. Ceanothus azureus, Desf., DC. Prodr. ii. p. 31; Bot. Reg. t. 291. 
Nortu Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 118, 
119), Sierra Madre (Seemann) ; SourH Mexico, Popocatepetl, 8000 feet ( Galeotti, 3554), 
Zimapan (Coulter, 15), between San Angel and San Bartolo, and below La Encarnacion 
de San José del Oro (Schiede), Real del Monte (Coulter, 14), Chiapas (Linden, 204), 
without localities (Graham, 128; Jurgensen, 272; Parkinson, Miller, Tate, and 
others) ; GuaremaLa, Volcan de Agua (Salvin & Godman). Hb. Kew. 
9. Ceanothus buxifolius, Willd. ex H. B. K. Nov. Gen. et Sp. vii. p. 62, t. 615. 
Colubrina buxifolia, Schl. 
Nortu Mexico, region of San Luis Potosi, 6000 to 8000 feet (Parry & Palmer, 122), 
in forests in the Sierra Madre (Seemann, 2158), San Luis Potosi (Virlet d’ Aoust) ; Sour 
Mexico, Mineral del Monte (Ehrenberg), very common in woods, Real del Monte, 8550 
feet (Humboldt & Bonpland). Hb. Kew. 
8 Ceanothus ceruleus, Lag. in H. B. K. Nov. Gen. et Sp. vii. p. 63. 
Norra Mexico, San Luis Potosi (Virlet d Aoust); Sourh Mexico, near the city of 
Mexico (Humboldt & Bonpland). 
4, Ceanothus depressus, Benth. Pl. Hartw. p. 8. 
Nortu Mexico, Zacatecas (Hartweg, 29); Sourn Mexico, Real del Monte (Coulter, 
11). Hb. Kew. | | 
5. Ceanothus glandulosus, Schl. in Linnea, xv. p. 474. 
Sour Mexico, near Las Trojes (Schiede). 
6. Ceanothus greggii, A. Gray, Pl. Wright. ii. p. 28. 
New Mexico.—Nortu Mexico, Guadalupe Pass, Sonora (Parry), San Luis Mountains 
in the same State (Smith), battle-field of Buena Vista (Gregg), region of San Luis 
Potosi, 6000 to 8000 feet (Parry & Palmer, 120,121). Hb. Kew. , 
7, Ceanothus macrocarpus, Cav. Ic. iii. t. 270. 
Soura Mexico (Aschenborn).—“ New Spain” (Cavanilles). 
