COLLECTED BY MR. SPRUCE, 369 



color. The following characters, in as far as derived from the anthera 

 and stigmate, have been verified in each instance in several, and often 

 in many flowers, but it remains to be seen how far they may prove con- 

 stant when we have specimens from a greater variety of sources. 



§ 1. Stigmate sesdli divaricatO'triloho. 



1. S. elastica, Pers. ; foliolis breviter petiolulatis glabris discoloribus, 

 panicula ferrugineo-tomentosa, calycibus obtusis, antheris 5 oblongis 

 serie unica verticillatis. — Ilevea Guianensis^ Aubl. Ph Gui. p. 871. 

 t. 335. 



Prench Guiana, Leprieur, The petiolar glands are small. The an- 

 thers are much longer than those of the other species, and constantly 

 arranged in a single row, about the middle of the central column. 



2. S. Brasiliensis^ Willd. ; foliolis longe petiolulatis glabris vix discolo- 

 ribus, glandula maxima peltata, panicula tomentella, pedicellis flore 

 brevioribus, calycibus acuminatis, antheris 7-10 serie duplici verti- 

 cillatis. 



In the forest of Para, a lofty handsome free, branching from the 

 base, and yielding the caoutchouc the most abundantly exported, (i?. 

 Spruce.) The leaves are much shorter than those of S, discolor^ upon 

 partial stalks 7-9 lines long, with a remarkably large gland at their 

 junction, the veins are very conspicuous, and the leaves, though abun- 

 dantly covered underneath with the same minute dots as the adjoining 

 species, are scarcely whitened by them, at least in the specimens before 

 me. 



3. S. discolor^ Spruce, MS,; foliolis breviter petiolulatis discoloribus 

 subtus pubescentibus, glandulis parvis, panicula tomentosa, pedicellis 

 flore brevioribus, calycibus obtusis, antheris 7-10 duplici serie verti- 

 cillatis. — 8. Brasiliensifi^ H.B. K., Nov, Gen. et Sp. vol. vii. p. 170? 

 vix "Willd. — Micrandra ternata^ U. Br. PL Jav. Rar. p. 237. 

 Common in the gapo of the Eio Negro, and of its tributary the Eio 



Uaupes, and known by the name of Seringue de gapo. The tree scarcely 

 exceeds 25 feet, but the branches spread out horizontally, sometimes to 

 a considerable distance. The milk is sparing, and scarcely elastic when 

 dry. The leaves are like those of S. elastica, but always more or less 

 pubescent underneath, generally 4 or 5 inches long ; the flowers of a 

 reddish-purple. The anthers are small and ovate, in two distinct ver- 

 ticils, sometimes both complete, with five in each, but one or two are 



VOL. TI. 



8 b 



