244 SCHOMBURGK.'s GUIANA PLANTS. 



Pedunculi communes brevissimi, pedicellis 3 lin. longis. 

 Flores in pedunculo 4 — 5, albi. Corollas tubus semipollicai'is, 

 basi parum inflatus, limbi lacinise latse, tubo longiores. Fol- 

 liculi incurvi | poll, longi. — Amongst rocks at Pedrero on 

 the Rio Negro, Schomburgk, n. 898. 



551. T. laxa (sp. n.) ; foliis petiolatis ovali-ellipticis obtu- 

 sis basi rotundatis cuneatisve coriaceis obscure nervosis mar- 

 gine revolutis, cymis terminalibus dichotomis multifloris, 



calycis laciniis brevibus obtusis -Frutex in aqua crescens 



(teste Schomb.). Folia 2— 3-pollicaria. Inflorescentia 

 T.lcetas. (Mart. Gardner, Rio, n. T5). Bractese parvae ovatee. 

 CorollEe tubus 4 lin. longus, basi parum inflatus, limbi laci- 

 niae oblongae, obtusee, tubo vix longiores. Stamina inclusa. 

 — On the Rio Negro, where the wood from its excessive 

 lightness, is used for various purposes instead of cork. Schom- 

 hurgk, n. 919. 



552. T. gracilis (sp. n.) ; foliis petiolatis oblongo-ellipticis 

 lanceolatisve breviter acuminatis basi angustatis venosis supra 

 demum nitidis, pedunculis brevibus paucifloris, calycis laci- 

 niis brevibus acutis, corollce limbi laciniis ovatis tubo gracili 

 brevioribus, folliculis oblongo-linearibus divaricatis laevibus. 

 — Frutex liabitu fere T. heterophyllce . Folia subsequalia, 

 3 — 4 poll, longa, petiolo 2 lin. longo. Pedunculus com- 

 munis petiolo asquilongus. Flores 3 — 7, nivei, pedicellis 

 pedunculo sublongioribus. Bracteae parvse, acutae. CoroUae 

 tubus semipollicaris, basi et medio (ad insertionem staminum) 

 leviter inflatus. Stamina inclusa. Stylus simplex. Folliculi 

 1 — 2-pollicares,subteretes. Seminapauca, oblonga,l2evia,eco- 

 mosa. — Stony ground on the Upper Essequibo, Schomburgk, 

 n. 39. 



553. V. {sp. n.) ?— Hotitjou of the Tarumas, a tree of 

 from fifty to sixty feet in height, yielding a copious milky 

 juice, Schomburgk, — A single specimen from the Taruma 

 country, widiout flowers, but evidently near T. odorata, 

 which it resembles in the branches, compressed at the bifur- 

 cations, and of a dark colour almost shining in the dry spe- 

 cimens; in the venation of the leaves, and judging from the 



