116 SCHOMBURGK's GUIANA PLANTS. 



1667, and 2404, from Ceara, and 2062, 2171, and 2176 from 

 Piauhy, areall probably newspecies of the petioliflorous group. 

 627. T. aurantiaca (sp. n.) ; fruticosa, foliis ovatis v. ovato- 

 lanceolatis acutis serrato-crenatis basi rotundatis supra glabris 

 subtus ramulisque parce strigoso-pubescentibus, petiolo bi- 

 glanduloso, pedunculis axillaribus unifloris liberis, bracteolis 

 ovali-oblongis foliaceis, calycibus strigoso-puberulis — Folia 

 2 — 3-pollicaria. PedicelH rigiduli, pollicares v. paullo lon- 

 giores. Bracteolse semi-poUicares, basi angustatae, margine 

 nonnunquam serraturis paucis notatae. Calycis tubus brac- 

 teolis paullo longior, laciniae lanceolata?, longe acuminatse, 

 tubo longiores. Petala obovata, aurantiaca, calycis lacinias 

 paullo superantia. Ovarium villosum. Styli 3, apice mul- 

 tifidi. Capsula bracteolis dimidio fere brevior, villosa, val- 

 vulis coriaceis usque ad basin fissis. Semina profunde sul- 

 cata. — Sandy plains on tlie Essequibo and Rupunoony; 

 Schombiirgk, n. 291. 



628. T. velutina (sp. n.) ; fruticosa, foliis ovatis v. ovali- 

 oblongis obtusis crenatis basi cordatis supra pubescentibus 

 subtus ramulisque velutino-tomentosis, petiolo biglanduloso, 

 pedunculis axillaribus unifloris liberis, bracteolis parvis subu- 

 latis, calycibus velutino-tomentosis. — Ramuli juniores to- 

 mento denso flavescentes, rami demum glabrati. Folia \^ — 

 2^-pollicaria, crassiuscula, moUia. Stipulae parvae, setaceae. 

 Pedunculi vix semipoUicares. Calyces 9 — 10 lin. longi, tubo 

 laciniis parum breviore. Petala obovata, aurantiaca, laci- 

 nias calycinas superantia. Ovarium viliosissimum. Styli 3, 

 apice multifidi — Among rocks, British Guiana; Schomburgk, 

 n. 626. 



629. T. parvlfiora (sp. n.) ; fruticosa, foliis ovatis v. ovali- 

 oblongis acutiusculis serrato-crenatis basi cuneatis supra hir- 

 tellis subtus ramulisque tomentoso-villosis eglandulosis, flori- 

 bus axillaribus subsessilibus solitariis, bracteolis linearibus, 

 calycibus pilosis — Frutex 6— 8-pedalis, ramosissimus. Folia 

 1— 2-pollicaria, odoratissima, petiolo 2— 3-lin. longo. Pedi- 

 celli brevissimi, liberi, Bracteolaj 3_3i lin. longa?. Caly- 

 ces vix 4 lin. longi. Petala lacinias calycinas paullo super- 



