14 PLANTS WKIGHTIAN^. V. 



t Talinum aurantiacum, Engelm. PI. Lindh. I. c. Common throughout South- 

 western Texas. Also found by Dr. Wislizenus in the Jornada del Muerto. 



33. " T. AURANTIACUM, /3. ANGUsTissiMUM : foliis auguste linearibus; pedunculis 

 ad basin vel yix supra basin articulatis ; sepalis magis membranaceis quam petala 

 brevioribus ; stylo stamina sequante ovario vix longiore." Engelmann. — Bottoms of 

 Live Oak Creek, and on the San Felipe; July. — ^^The flowers, according to Mr. 

 Wright, expand in the afternoon and last till the next mid-day. No. 92 of Drum- 

 mond's 3d Texan collection, from San Felipe, is the same form. The earlier flowers 

 in one of Wright's specimens show peduncles nearly as long below the articulation 

 as in the ordinary T. aurantiacum, the later flowers of which have it abbreviated : 

 so that it is not a distinct species, as Dr. Engelmann suspected it might be. To T. 

 aurantiacum I must also refer Nos. 41, 714, and 715 of Coulter's Mexican collection, 

 from Zimapan, &c., as well as (from the character) one from Wislizenus's North 

 Mexican collection, which Engelmann had characterized as a new species. The pe- 

 duncles in vigorous specimens are sometimes 2 - 3-flowered. 



34. T. SARMENTosuM, Engelm. PI. Lindh. I. c. On the Leona ; June. — " Root 

 thick, tuberous." To char, add, " bracteolis subulatis." Engelm. — Very near T. 

 patens, which is cultivated in the gardens under the name of T. purpureum, and per- 

 haps a prostrate variety of it. 



35. " T. SPATHULATUM (sp. nov.) : caule erecto gracili folioso ; foliis carnosis oblan- 

 ceolato-spathulatis breviter cuspidatis in petiolum sensim attenuatis ; cymulis axil- 

 laribus bracteatis laxe trifloris versus caulis apicem in paniculam dispositis ; brac- 

 teis ovatis cuspidatis minutis deciduis ; floribus longe pedicellatis [corolla ex cl. 

 Wright flava] ; seminibus nigris nitentibus tuberculatis." Engelmann. — Moun- 

 tains of New Mexico east of the Eio Grande ; August. — " Well distinguished from 

 the nearly related T. sarmentosum by the narrower, spatulate leaves (2-3 inches 

 long, and half an inch or more wide), by the short ovate bracts, the larger capsule, 

 and the very much larger seeds, which are much more distinctly tuberculate." 

 Engelm. To which I may add that the flowers are yellow, according to Mr. 

 Wright's note. I believe it is in Coulter's Mexican collection, and have scarcely 

 a doubt that it is T. reflexum, Cav. 



TALINOPSIS, Nov. Gen. 



Calyx ebracteatus, diphyllus; sepalis 8equalibus, ovatis, muticis, membranaceis, 

 persistentibus. Petala 5, hypogyna, libera, ovalia, exunguiculata, gestivatione im- 

 bricata, cito gelatinoso-marcescentia. Stamina circ. 20, in phalanges 5 petalis op- 

 positas iisque adheerentes disposita : filamenta subulata : antherse biloculares, loculis 

 oblongis discretis. Ovarium fusiforme uniloculare : stylus columnaris, brevis, apice 

 trifidus, lobis oblongis intus stigmatosis. Ovula numerosissima, subamphitropa, colu- 

 mellfe gracili centrali funiculis gracillimis inserta. Capsula fusiformis, subtrigona, 

 calyce semiinclusa, ab apice trivalvis; epicarpio coriaceo valvarum ab endocarpio 

 chartaceo 6-valvi dissiliente. Semina indefinita, uncinata, inappendiculata ; testa 

 laxa granulata ; tegmine membranacea embryoni hamosi-arcuato conformi. Albu- 

 men fere nullum. — Fruticulus glaber, ramis gracilibus nodosis ; foliis carnosis line- 



