330 NOHTH BRAZILIAN EUPHORBIACE.E 



galis inferioribus masculis reflexis superioribus foeminels erectis, 

 bracteis parvis acute deutatis, stylis loiige plumosis. — Affinis ex de- 

 scriptione A, cuneatce, Pocpp. et Endl. Folia 6-8 poll, loiiga, 2-3i poll. 

 lata, acumine longo obtuso, basi acuta nee cordata, meinbranacea, 

 utrinque viridia, penninervia. SpiccB mamulcB folio sue breviores, 

 fere glabrse, tenues, crebriflorse ; foeminea folia superantes, floribundse, 

 Bractece 2-3-flor3e, per anthesin minutse, fructiferse rare capsulam su- 

 perantes, ovatae, acutae, grosse et acute deiitatse. Styli rami coccinei. 

 Capsidm pilis paucis rigidis bispidae. 



In the Gapo at Managuiry, at the mouth of the Rio Negro, 72. Spruce, 



Alchornea. 



This genus now includes a considerable number of species, chiefly 

 South American, which may be easily distributed into two sections by 

 the venation of the leaves. It is nearly allied to Conceveiba and Jpa- 

 rlsthuium^ but appears to be always distinguished by the octandrous 

 flowers of the males, and the two long styles of the females. Mr. Spruce's 

 collection contains the following three species. 



§ 1. Foliis pemiinervm. 



castane^folia 



Her 



mesia castanecpfolia, Humb. et Bonpl. — A shrub of 8-15 feet, frequent 

 along the Amazon, growing with the Salix Humboldtiana. 



2. A. ScJiomburgkii^ KL in Lond. Journ. Bot. vol. ii. p. 46. — A small 

 tree, with spreading, almost climbing branches, gathered by Spruce at 

 Obidos, in the Sierra de Mapin, and in the marshy campos near San- 

 tarem, in the Capoeiras at Barra do Rio Negro, and in the Capoeiras 

 and Caatingas of the Rio Uaupes ; and by Gardner on the Rio Preto, in 

 the province of Pernambuco (n. 2993). Some female specimens from 

 a large tree in the forest near Barra, differ slightly in the surface of the 

 leaves, the petioles and young branches being more decidedly canescent, 

 and in the female calyxes longer and more pointed ; but there are no 

 male specimens, to enable us to judge whether it be anything more than 

 a mere variety. 



§ 2. Foliis basi trbierviis. 



3. A. glandulosa, Poepp. et Endl. Nov. Gen. et Sp. vol. iii. p. 18. 

 t, 221. var.? pai-vifoUa, — lu the Capoeiras, near San Gabriel, forming a 



