188 Mr. J. Miers on the genus Schwenkia. 



family the radicle always points to the true point of origin of the 

 hilum. Schwenkia, like Vestia, has a stipitate ovarium, the 

 support being enclosed in its hypogynous disk, and the corolla 

 also falls away by a circumscissile line above its base, forming a 

 small cup that invests the base of the ovarium : the mode of its 

 placentation likewise resembles that of Fabiana, the points of 

 attachment of the ovules being placed in several prominent lon- 

 gitudinal lines ; the seed in a similar manner is slightly curved 

 and hollow on its ventral face, the hilum being seen in this 

 hollow. 



Schwenkia, Linn. — D.C. Prodr. x. 192. — Chsetochilus, VahL 

 Enum. i. 102.— Mathea, Veil. Fl. Flum. i. tab. 51— (Charact. 

 emend.). — Calyx tubulosus, 5-dentatus, vel semi-5-fidus, la- 

 ciniis sublinearibus, praefloratione valvatis, persistens. Corolla 

 monopetala, tube elongate cylindrico, rarius supra medium 

 infundibuliformi, ssepissime gibbosim subinflato, ore con- 

 tracto, et hinc in lobos 5 glanduliformes producto, lobis erectis, 

 lineari-teretibus setiformibus subsequalibus, aut insequalibus 

 et clavatis, vel ad dentes minutos mucroniformes redactis, 

 fauce corona limbiformi rotata 5-partita instructo, segmentis 

 seu brevibus et dentiformibus, vel oblongis, integris, acutis, 

 expansis, lobis multo longioribus, aut truncato-oblongis, emar- 

 ginatis, bifidisve, et tunc sBepe sese longitudinaliter retro- 

 plicatis, lobis segmentisque sestivatione valvatis. Stamina 5 

 inclusa, imo vel medio tubi orta, lobis alterna, et segmentis 

 coronse opposita, nunc 2 superiora fertilia et faucem attingentia, 

 quinto summo duobusque anticis bre\ibus, vel his tantum 

 (summo deficiente) anantheris sterilibusve, nunc 4 fertilia, 

 summo quinto ananthero : anthe)'ce conniventes, ovatse, cordatse, 

 2-lobae, lobis ad connectivum tenuem dorso adnatis, rima 

 longitudinali antice dehiscentibus. Ovarium oblongum, disco 

 hypogyno cupuliformi suffultum, rarius disco obsoleto stipi- 

 tatum, et hinc casu coroUse circumscissse cyatho membranaceo 

 imo cinctum, 2-loculare, placentis crassis, carnosis, dissepi- 

 ment© utrinque adnatis ; ovula plurima, in lineas longitudi- 

 naliter digesta : stylus filiformis, inclusus ; stigma claviforme, 

 pulvinatum, obsolete 2-lobum, apice umbilicatum. Capsula 

 septicide 2-valvis, valvulis integris, dissepimento demum libero 

 medio seminifero parallelis. Semina plurima, tetragono-ob- 

 longa, paullo curvata, testa scrobiculata : embryo intra albumen 

 carnosum subincurvus, cotyledonibus oblongis, compressis, 

 radicula infera tereti hilo umbilicato ventrali distante, vix 

 latioribus et subsequalibus. — Herbse suffruticesve Americani 

 [una specie etiam in Africa tropicali crescente) : folia ovata, aut 

 lanceolata, Integra, floralia decrescentia vel minuta; pedunculi 



