SCHOMBURGK's GUIANA PLANTS. 239 



1 — l^-pollicaria. Capitula 3— 4 lin. dianietro Savannahs, 



British Guiana, Schomburgk, n. 409 This plant resembles 



much Aublet's figure of Spermacoce aspera^ but he describes 

 the fruit as separating into two monospermous capsules, and 

 Schomburgk's plant is without doubt a Mitracarpium. 



I have not any 3Iitracarpium amongst Gardner's plants, 

 but his 1335 from Alagoas, and 2187 and 2192 from Piauhy 

 all belong to the adjoining genus Stalia. 



530. Perama hirsuta (Aubl. PI. Gui. i. 54. t. 18); caule 

 dense hispido, paniculato-ramoso, foliis oppositis ovato-lance- 

 olatis V. superioribus lanceolatis, corollse tubo dentibus caly- 

 cinis breviore,laciniis limbi 4 acutis muticis. — British Guiana. 

 Schomburgk, n. 100 in the earlier sets. — French Guiana, 

 Leprieur, Herb. Par. n. 167,— Bahia, Blanchet n. 2551, 

 Salzmann. 



531. P. stricta {sp. n.) ; ramis strictis pilis raris strigosis, 

 foliis oppositis lanceolatis v. superioribus lineari-lanceolatis 

 basiciliatissubglabris, coroll£e tubo dentes calycinas superante 

 limbi laciniis 4 acutis muticis. — Foliorum forma, coroUis 

 majoribus, glabritie et habitu a P. hirsuta sat distincta vide- 

 tur. — British Guiana, Schomburgk, n. 100 in the later sets. 



532. P. humilis (sp. n.); hispida, basi ramosa, ramis sim- 

 plicibus, foliis ternis lineari-lanceolatis, corollfp tubo dentibus 

 calycinis breviore, limbi 5-fidi laciniis setaceo-acuminatis. — 

 Calyces majores, corollse minores quam in P. hirsuta. — 

 Roraima, ScJwmhurgk, a single specimen — The species an- 

 swers in many respects to the description of P. hispida 

 (Humb. et Kunth, under 3Iattuschkea,) but the corolla is 

 different. Perama, still rejected by some from Rubiacea^, is 

 very near Stceiia, the capsule opens in the same way in two 

 oblique valves, but being 3-celled, each valve comprehends 

 the upper portion of one cell and a-half 



Gardner's 440 and 441, from the Organ Mountains, 

 are the Emmeorhiza Pohl. [Endlichera Brasiliensis, Pohl., 

 Machaonia Brasiliensis, DC.) a plant very nearly allied to 

 Machaonia, but probably a good genus. Gardner's n. 1336 

 from Alagoas, and 1600 from Ceara, are true Machaonia;. 



