276 ERICACEA. 
Order LXXVII. ERICACE. 
Ericacee, Benth. et Hook. Gen. Plant. ii. p. 577. 
Fifty-two genera, comprising about 1000 species, mostly shrubs. The order is repre- 
sented in nearly all parts of the world; but about half of the species are concentrated 
in South Africa. 
1. ARBUTUS. 
Arbutus, Linn. Gen. Plant. n. 552, excl. sp.; Benth. et Hook. Gen. Plant. ii. p. 581. 
Shrubs and small trees, inhabiting South and Western Europe and North-west 
America, from Oregon to Guatemala. Bentham and Hooker estimate the total 
number of species at ten; and there are probably not more than six distinct species 
in Mexico; but we have seen too few authenticated specimens to be able to reduce 
them. 
1. Arbutus densiflora, H. B. K. Nov. Gen. et Sp. iii. p. 280, t. 260. 
Sout Mexico, La Pileta and J alapa, at 4500 feet (Humboldt & Bonpland). 
2. Arbutus floribunda, Mart. et Gal. in Bull. Acad. Brux. ix. (reprint, p. 9); 
Walp. Rep. ii. p. 725. 
SourH Mexico, Pelado de Capulalpan, eastern Cordillera of Oaxaca, 7500 to 8500 
feet (Galeotti, 1822). 
3. Arbutus glandulosus, Mart. et Gal. in Bull. Acad. Brux. ix. (reprint, p. 8); 
Walp. Rep. ii. p. 725. 
Arbutus densiflora, Benth. Pl. Hartw. p. 15, non H. B. K.; Klotzsch in Linnea, xxiv. p. 72. 
NortH Mexico, Sierra Madre (Seemann, 2122), region of San Luis Potosi, 6000 to 
8000 feet (Parry & Palmer, 563); Sours Mzxico, Tlalpujahua (Graham, 305); Guats- 
MALA, pine-forests, Volcan de Fuego (Salvin & Godman). Hb. Kew. 
4. Arbutus laurina, Mart. et Gal. in Bull. Acad. Brux. ix. (reprint, p. 10); 
Walp. Rep. ii. p. 725. 
SoutH Mexico, Yavezia, north-east of Oaxaca, at 7000 to 7500 feet + (Galeotti, 1825). 
5. Arbutus macrophylla, Mart, et Gal. in Bull. Acad. Brux. ix. (reprint, p. 9); 
Walp. Rep. ii. p. 725. 
Norrn Mexico, Sierra Madre (Seemann, 2121); Sourn Mexico, Cordillera of Oaxaca, 
at 8000 feet (Galeotti, 1824). Hb. Kew. 
Probably the same as A. densiflora. 
6. Arbutus menziesii, Pursh; Nutt. Sylv. iii. p. 42, t. 95; A. Gr. Synopt. FL. 
N. Am. ii. p. 27. 
Arbutus procera, Dougl., ex Lindl. Bot. Reg. t. 1753. 
Arbutus laurifolia, Lindl. Bot. Reg. xxv. t. 67. 
