ROSACEZ. | 369 
Tribe SPIRZEA. 
This tribe consists of herbs and shrubs, restricted to the northern. hemisphere, and 
almost exclusively to temperate regions. Most numerous in North America and North- 
eastern Asia. . | 
| 8. SPIRAZA. 
Spirea, Linn. Gen. Plant. n. 630; Benth. et Hook. Gen. Plant. i. p. 611; Maxim. Adnot. de 
Spirzac. in Act. Horti Petrop. vi. . 
About fifty herbaceous and shrubby species, ranging all round the north temperate 
zone, and less numerously represented in the mountains within the tropics. Maxi- 
‘mowicz (Joc. cit.) very much circumscribes the genus. 
1. Spirzea cespitosa, Nutt. in Torr. et Gray, Fl. N. Am. i. p. 418; Maxim. 
Adnot. de Spireac. p. 71. 
Western side of North America in the Rocky Mountains southward to—Norra 
Mexico, Chihuahua (Bigelow). Hb. Kew. 
2. Spirza discolor, Pursh, Fl. Am. Sept. i. p. 342; Maxim. Adnot. de Spireac. 
p. 150, sub Holodisco. 
Spirea ariefolia, Sm. in Rees’s Cycl. xxxii. n. 16. 
Spirea dumosa, Nutt. ex Torr. in Bot. Stansbury’s Exped. Salt Lake, p. 387, t. 4. 
Spirea fissa, Lindl. Bot. Reg. 1842, Misc. p. 1. 
Spirea argentea, Benth. Pl. Hartw. p. 82, nec Mut. 
Spirea mexicana, Schiede in Regel, Ind. Sem. Hort. Petr. 1857. 
_ Orgcon and CotumpiA River southward.—NorrH Mexico, region of San Luis Potosi, 
6000 to 8000 feet (Parry & Palmer, 223); Soura Mexico, peak of Orizaba, 10,000 to 
12,000 feet (Liebmann; Galeotti, 3084; Linden, 663), valley of Mexico (Bourgeau, 
267), Chiapas (Ghiesbreght); Guarema.a, pine-forests, 10,000 to 11,500 feet (Salvin & 
Godman), near the city of Guatemala (Hartweg), without t locality (Friedrichsthal). 
Hb. Kew. 
We have followed Maximowicz in referring the variable Mexican forms of Spirea 
bearing the above names to S. discolor, Pursh. 
3. Spirea parvifolia, Benth. Pl. Hartw. p. 36; Maxim. Adnot. de Spireac. p. 71. 
SoutH Mexico, Puente del Dios (Hartweg, 284). Hb. Kew. 
Tribe QUILLAJEA. 
This tribe is composed of about twelve shrubby and arboreous species, belonging 
to eight genera. -All the genera are American, as well as the species, with the - 
exception of two species of Hucryphia found in Australia. They range from New 
Mexico to Chili. . _ | 
BIOL. CENT.-AMER., Bot. Vol. 1, April 1880. 36 
