WESTERN TROPICAL AMERICA, 143 
635. Datura Stramonium, Linn.—Walp. Rep. 3. p. 16.—Mexico to Guayaquil. 
636. Cestrum Pargui, Lher.—Walp. Rep. 3. p. 119.—Tepic. 
637. Cestrum sp.—A very imperfect specimen, from Panama. 
SCROPHULARIACER. 
638. Leproaxossis schwenchioides, gen. nov. e tribu Salpiglossidearum.— Huamantango. 
Cuan. Gen. Calyx 5-dentatus. Corolle tubus elongatus, apice subgibbus, faux non dilatata, 
limbi obliqui patentis lacinize 5, subeequales, breves, late, integra, wstivatione imbricate subplicate, 
posticee exteriores. Stamina didynama; anthere biloculares, loculis divaricatis latis demum ex- 
plicato-planis confluentibus; staminum posticorum dimidio minores. Stylus apice petaloideo- 
dilatatus, lamina orbiculari supra tenuiter stigmatosa. Capsula membrancea, valvulis dissepi- 
mentum membranaceum parallelum nudantibus demum bifidis. Placente dissepimento adnate. 
Semina numerosa, subangulata.—Huamantango. 
L. schwenckioides. Uerbaerecta, ramosa, undique viscido-puberula. Folia alterna, sessilia, 6-9 lin. longa, 
lanceolata vel lineari-lanceolata, acuta, integerrima, uninervia, utrinque viridia, superiora decrescentia, Panicula 
terminalis, oblonga, semipedalis. Flores ad apices ramulorum conferti, irregulariter et sxpius simpliciter 
cymosi, subsessiles vel pedicello calyce breviori ebracteato. Calyx sub anthesi 14 lin., fructifer 2 lin. longus 
tubuloso-campanulatus, viscido-puberulus, venis 5 latis viridibus inter venas membranaceus, dentibus 5 acutis 
tubo suo multo brevioribus. Corolle tubus 8-9 lin. longus, tenuis, membranaceus; limbus 3-4 lin, latus, 
Capsula calycem subeequans, ovata, acutiuscula. Semina nondum matura, sed forma iis Schwenkie similia et 
verosimiliter embryo pariter leviter incurva. 
This genus is in some measure intermediate between Schwenckia and Bro- 
wallia, but well characterized by the form of the corolla and by the stamens. It 
belongs to the Salpiglossidee, one of the three suborders into which I have divided 
the Scrophulariacee, in the manuscript prepared for the tenth volume of De 
Candolle’s Prodromus. This suborder is characterized by the inflorescence, which 
like that of the capsular Solanacee, is always some modification of a terminal 
centrifugal simple or compound cyme, and by the estivation of the corolla which 
is a combination of the plicate, and imbricato-bilabiate, approaching more or less 
to the one or to the other in different genera. 
639. Browax1a demissa, Linn.—Walp. Rep. 3. p. 236.—Salango, Guayaquil. 
640. Browauia peduncularis, sp. n-, viscoso-pubescens, foliis ovatis wi oveto-eblenga nese 
bus vel inferioribus petiolatis utrinque scabro-hirtis, floribus paucis axillaribus vel Jaxe ee 
pedunculis calyce pluries longioribus, calycis viscosissimi laciniis oblongis tubo longioribus.— 
Huamantango ; it is also Mathew’s, n, 512, from Purrochuca. | 
Tota rigidior quam B. demissa. Folia pollicaria vel superiora minora. Rami floriferi viscosi. Flores 
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