180 BURSERACEZ. 
33. Elaphrium simplicifolium, Schl. in Linnea, xvi. p. 532. 
South Mexico, without any special locality (Schiede). 
34. Elaphrium “torulosum,” in hb. Kew. 
Rhus potentillefolium, Turcz. in Bull. Soc. Nat. Mosc. 1858, i. p. 469. 
Sourn Mexico, cactiferous rocks, Tehuacan, Oaxaca, at 5500 feet ( Galeotti, 4 4006 ; 
Andrieux, 466). Hb. Kew. 
2. HEDWIGIA. 
Hedwigia, Swartz, Fl. Ind. Occ. ii. p. 670; Benth. et Hook. Gen. Plant. i. p. 326. 
There are four or five arboreous species of this genus, natives of the northern part 
of South America and the West-Indian. Islands. 
1. Hedwigia balsamifera, Sw. Fl. Ind. Occ. ii. p. 670, t. 13. 
Panama, Rio-Grande railway-station (8. Hayes, 342).—TRINIDAD ; and, according to 
Tussac, it occurs in nearly all the Wust-Inpian IsLanps. Hb. Kew. 
2. Hedwigia? mexicana, DC. Prodr. ii. p. 80; Calques des Dess. Fl. Mex. 204. 
Mexico, without locality (Mocino & Sessé). 
Tribe AMYRIDEA. 
The tribe is limited to the following genus, which is peculiar to the West Indies and 
Tropical America :— 
3, AMYRIS. 
Amyris, Linn. Gen. Plant. n. 478 ; Benth. et Hook. Gen. Plant. i. p. 327. 
About twelve species of shrubs and trees. 
1. Amyris? bipinnata, DC. Prodr. ii. p. 82; Calques des Dess. Fl. Mex. 197. 
Mexico, without locality (Mogino & Sessé). . 
2. Amyris? tecomaca, DC. Prodr. ii. p. 92: Calques des Dess. Fl. Mex. 195. 
Mexico, without locality (Mogino & Sessé). 
8. Amyris thyrsiflora, Turcz. in Bull. Soc. Nat. Mosc. 1858, i. p. 475, 
South Mexico, Zacuapan (Linden, 77), Vera Cruz, ravines at 3000 feet (Galeotti, 
2822), Jalapa (Galeotti, 7018). Hb. Kew. 
4, Amyris, sp. | 
Nortu Mexico, Monterey (Eaton & Edwards, 77). Hb. Kew. 
