SCH0MBUROK*S GUIANA PLANTS. 101 



glabris v. vix puberulis, racemis gracilibus laxiusculis, alis 

 late obovatis breviter unguiculatis, carinae nudae lobis later- 

 alibus plicatis, stylo geniculato simplici apice substigmate 

 oblique globoso penicillato, capsula oblonga emarginata glab- 

 ra. — Canles 1 — 2-pedales. Folia inferiora lanceolata, vix 

 pollicaria, obtusiuscula, superiora angustiora, acuminata, us- 

 que ad 3 poUices longa. Racemi laterales, 2 — 3-pollicares. 

 Pedicelli setacei, floribus subaequilongi. Floras lis P. violacetB 

 structura similes sed minores, rosei. Calycis sepala exteri- 

 ora postica ultra medium connata. Alae corolla vix longi- 

 ores, capsula matura latiores. Semina P. violace^^, retrorsuni 

 liirsuta, caruncula fere orbiculata. Dry savannahs of the 

 Rio Branco; Schomhurgk, n. 816. — Gardner's n. 2044, from 

 Piauhy, is probably the same species; and 1452, from Ceara, 

 differs slightly in the more hairy stem. The same collector's 

 «. 316, from the Organ Mountains, is P. laureola St Hil., 

 and 2043, from Piauh}-, is Monnina cuneata^ St Hi!. Thei'eare 

 besides in Gardner's collections, a considerable number of 

 PolygaliSj chiefly of the section Timutua, and several of them 

 new. 



590. Catocoma hicida, sp. n. — Dry savannahs, Pirara ; 

 Schomhurgk, n. 717. 



Catocoma (gen. nov.) — Comespermata Americana aucto- 

 rum. — Char. Gen. — Calyx 5-sepalus, deciduus; Sepala 3 ex- 

 teriora parva, uno postico, duobus anticis, 2 interiora majora 

 alseformia. Petala basi columnse stamineae adnata; anticum 

 magnum, carinaeforme, trilobum ; 2 postica oblonga; 2 later- 

 alia minutissima, squamasformia. Stamina 8, ultra medium 

 nionadelpha, tubo postice fisso ; antherse uniloculares, apice 

 poro dehiscentes. Ovarium a latere compressum ; ovula in 

 loculis solitaria, a dissepimenti apice pendula. Stylus termi- 

 nalis, curvatus, deciduus, apice emarginalus, in emarginatura 

 siigmatifer. Capsula compressa, oblongo-cuneata, subcar- 

 nosa, bilocularis, margine loculicide dehiscens. Semina in 

 loculis solitaria, pendula, caruncula umbilicali pilis longissi- 

 mis semen totum involventibus comosa. — Frutices Ameri- 

 cani laxi vel scandentes, habitu et floribus Securidac<B similes, 



