406 , MYRTACEA, 
1, PSIDIUM. 
Psidium, Linn. Gen. Plant. n. 615; Benth. et Hook. Gen. Plant. i. p. 718. 
The genus is restricted to America; and Berg enumerates about 100 species. 
1. Psidium araca, Raddi, Opusc. Sc. iv. p. 854. 
GuaTEeMALa (Priedrichsthal). Grows wild and cultivated in Tropica, America and the 
West Inpiss. Hb. Kew. | 
2. Psidium costaricensis, Berg in Linnea, xxvii. p. 368. 
Costa Rica, Volcan de Irazu (Grsted). 
8. Psidium laurifolium, Berg in Linnea, xxvii. p. 364. 
Nicaragua, Masaya (@rsted). 
4. Psidium molle, Bertol. Fl. Guat. p. 22, t. 9; Berg in Linnea, xxvii. p. 368. 
a. robustum, Berg, loc. cit. | 
Guatemaa (Velasquez) ; Costa Rica, Candelaria Mts. (€rsted). 
B. gracile, Berg, loc. cit. 
Costa Rica, Volcan de Irazu (@rsted). 
5. Psidium erstedianum, Berg in Linnea, xxvii. p. 360. 
GuaTEMALA, Monte Rincon (Friedrichsthal) ; Costa Rica, Guanacaste ((rsted). 
6. Psidium pomiferum, Linn. Sp. Pl. p. 672. 
Psidium pyriferum, Linn. Sp. Pl. p. 672. 
Psidium guava, Radd. 
South Mexico, Orizaba (Botteri, 830), Zimapan (Coulter, 138), valley of Cordova 
(Bourgeau, 1886); Guatemata (Friedrichsthal) ; Nicaraaua, Chontales (Tate) ; Panama, 
Chagres (Fendler, 306).—A native of Tropica America, where it is also widely culti- 
vated, as well as in other countries. Hb. Kew. 
7. Psidium polycarpon, Lamb. in Trans. Linn. Soc. xi. p. 231, t. 17. 
SoutH Mexico, Jalapa (Linden, 587); Panama (Seemann).—North part of Souru 
America. Hb. Kew. 
8. Psidium schiedeanum, Berg in Linnea, xxvii. p. 368. 
Mexico (Schiede, 541). 
Bentham and Hooker (Gen. Plant. i. p. 713) mention Calyptropsidium fried- 
richsthalianum as closely allied to this genus. 
2. CALYCOLPUS. 
Calycolpus, Berg in Linnea, xxvii. p. 378; Benth. et Hook. Gen. Plant. i. p. 718. 
" Eight species are enumerated, all restricted to Tropical America, 
