COLLECTED BY MR. SPRUCE AT PARA. 943 
seen the fruit of any of them, I am not yet certain that they may not 
be referable to some one of the imperfectly described genera already 
established ; I therefore reserve their description for a future oppor- 
tunity. 
The Composite, chiefly in single specimens, afford no species of 
- much interest. The same may be said of the greater number of the 
Monopetale, which are either well-known herbaceous coast-plants, or, 
even when less common, belong to Natural Orders so lately worked up 
for the Prodromus, as not to call for observation. Among them, how- 
ever, is the Masseranduba, or Milk-tree, n. 21 of the Kew list (p. 74). 
It was not found in flower or fruit, but from the leaves there is little 
doubt of its being a Sapotaceous plant, and probably some species of 
` Sapoía. There are several specimens of Voyria uniflora, found growing 
among dead leaves, but Mr. Spruce failed in discovering any traces of 
parasitism. Three fine plants, not common in collections, Potalia 
resinifera, Mart., Adenocalymna magnifica, Mart., and Prevostia ama- 
zonica, Chois., are unfortunately in single specimens only. 
Among the Euphorbiaceae are three interesting species: the Caout- —— 
choue-tree, or Seringuera of the Brazilians, n. 18 of the Kew list 
(p. 73), is not the Guiana kind (Siphonia elastica, Pers.), but a distinct 
species, S. brasiliensis, Willd., described by Kunth in Humboldt’s 
* Nova Genera et Species,’ vol. vii. p. 130. The Zacuari, n. 22 of the © 
Kew list (p. 74), is a Madea, also distinct from the two species - 
described by Aublet ; it agrees, however, with the one described 
by Martius under the name of M. fistulifera, and all three appear 
to be known by the name of Tacwari, and to supply the slender - 
branches used by the natives for tobacco-pipes. The following is 
now 2 
Peridium oblongifolium, foliis petiolatis oblongis obtusis basi angus- - 
tatis supra glabris nitidis subtus ramulisque lepidotis, involucris - 
masculis globosis ferrugineis.—Ramuli juniores ferrugineo-lepidoti, 
rami vetustiores cinereo-albidi. Folia 3—4 poll. longa, 1-14 poll. 
lata, consistentia laurina, petiolo lepidoto 4—5 lin. longo. Pedunculi — a 
brevissimi, pedicellis 2 lin. longis. Involucra mascula iis P. fer- 
- ruginei breviora, exacte globosa nec ovoidea. Bracteæ exteriores 
brevissime, late, obtusissimæ. Stamina circa 10, filamentis brevi- - 
bus subtriadelphis, et interdum squamulis brevibus interstincta. - 
Ovaria nunc nulla, nunc rudimentaria, tenuia, et interdum squamula 
212 
