238 SCHOMBURGK'ri GUIANA PLANTS. 



1036 from Pernambuco (the same species as 1707 from 

 Ceara), 1034 from Pernambuco, 1708 and 1711 from Ceara 

 are all Borreria ; 2193 from Piauhy, as far as I can ascertain 

 from my specimen, is a true Spermacoee^ and 443 from the 

 Organ Mountains, is too young to determine. 



526. Richardsonia divergens, DC. Prod. iv. 568. — Savan- 

 nahs of the Rio Branco, and near Currassawaka, Schomburffh, 

 n. 630. — The Rio Branco specimen, a single one, agrees pre- 

 cisely with Salzmann's ; those from Currassawaka ai"e rather 

 less hairy, but the characters are the same. 



Gardner's n. 54 from Rio Janeiro, is R. scabra, and 1035 

 from Pernambuco, appears to be M. grandiflora, Ch. et 

 Schl. 



The same collector's n. 444, from the Organ Mountains, is 

 a Triodon. 



52T. Mitracarpium puberulum (sp. n.) ; annuum, procum- 

 bens? foliis eiliptico-oblongis lanceolatisve acutiusculis basi 

 angustatis utrinque cauleque puberulis, stipulis multisetis 

 ciliatis, floribus parvis dense capitato-verticillatis, capitulo 

 terminali tetraphyllo. — In omnibus cum descriptione Chamis- 

 soniana M. Torresiani (ex Manilla) convenit, nisi pubescen- 

 tia brevissima. Flores numerosi minimi fere ad omnes 

 nodos. An hue referenda Sjoermacoce prostrata, Aubl,? — 

 British Guiana, Schomburgk, n. 394. 



528. M. scabrellum {sp. n.) ; annuum, erectum ? foliis 

 linearibus v. lineari-lanceolatis setaceo-mucronatis utrinque 

 cauleque scabro-hirtellis, stipulis paucisetis, capitulis termi- 

 nalibus et paucis axillaribus parvis, calycis dentibus 4, 2 



duplo majoribus tubo coroUae brevioribus Herba dura, 



4 — 9-.pollicaris. Rami stricti. Folia majora poilicaria. 

 Capitula pleraque 2 lin. diametro. — On the Rio Branco, 

 Schomburgk, n. 856. 



529. M. rude (sp. n.) ; annuum ? erectum, foUis lanceo- 

 latis acutissimis utrinque cauleque setoso-hispidis, stipulis 

 longe multisetis, capitulis axillaribus et terminali 4-phyllo 

 densis, calycis dentibus 2 tubum corollse ajquantibus, 2 nn- 

 nutis — Herba 1 — 2-pedalis. Rami parce ramosi. Folia 



