BOTANY. 



1G5 



\ 



.-U 



GoNOLOBUS GRANULATUS (ScJieele lu Linnoia 21, p. Yo9.): volubilis pills patcntiLus vel rcversis 

 liirsutus ; ioliis longins petiolalis ovatis acnminatis pvofunde cordatis ; pediiriculo petiolurn 

 superante ; iimbellis paucifloris ; corolht; laciniis ovatis obtusis reticulato-vcnosis cxtus pilosius- 

 culisj intus glabris ; corona stam. annnliformi ; gynostegiosubistipitato applanato ; aiitlierarnm 

 cuspidibus tenuissimis inflexis ; stigmate niido ; folliculis lanceolatis sparsim cchinatis glabris. 



A, 



Mountain ravines, 4iear Live Oak Crcelv, September ;^/9e?026^ Sonera; Schott. Montereyj Neiivo 

 Leon; D)\ Edicards and Major Eaton. (No. 543 and 1674^ Wright. No. 350 Lindheimer' s 

 Texan Coll, 1846.) Stem herbaceouSj twining over shrubs and small trees. Leaves varying 

 I'rom 2-3 1 inches long, and l^-^^ inches wide, slightly pubescent on both sides; the petiole 

 8-10 lines long. Peduncles usually about one-fourth longer than the petioles. Umbel (or 

 rather very short raceme) 4-8-flowered; the longer pedicels about an inch in length, Flowers 

 5 or G lines in diameter. Calyx hairy; the segments lanceolate. Corolla rotate, greenish or 

 purplish, with darker reticulated veins. Stamineal crown reduced to a narrow ring. Antliers 

 with the membranous appendage very thin and inflexed under, not lying on the stigma. 

 Pollen-masses obliquely obovate. Stigma obtusely 5-angled, flat. Follicles 4^ or 5 inches hmg 

 and about f inch in diameter, armed with distant, subulate, rather jSrm prickles. 



Lachnostoma? pakviflora (n. sp.): humifusum, pilosum ; foliis ovatis vel orbiculato-ovatis 



acutis brevi-petiolatis ; pedunculis folio multo-longioribus ; floribus primo umbellatis deinde 

 racemosis ; corolla rotata, laciniis ovatis ; corona stam. phyllis 10 biseriatis, 5 exterioribus 

 alte bifidis laciniis acuminatis, 5 interioribus subulatis utrisque gynostegio longioribus; folliculis 

 ovato-oblongis spinis innocuis villosis dense onustis. San Pedro Creek, western Texas ; Wright^ 

 (No. 1673,) Table-land between Ringgold Barracks and Laredo, on the lower Rio Grande, 

 June — July; Scliott, Root tuberous. Stem clothed with a gray spreading pubescence, branch- 

 ing from the base; the branches 8-12 inches long. Leaves varying narrowly to broadly ovate, 

 about three-fourths of an inch long, usually waved and often crisped on the margin. Peduncles 

 axillary and subterminal, at first only a little longer than the leaves, but in fruit twice or thrice 

 longer. Umbels or racemes 5-10-flowered. Corolla about 2^ lines in diameter, purplish. 

 Stamineal crown consisting of 10 distinct leaflets in a double series ; the 5 exterior cleft about 

 halfway down, the points curved over the stigma ; the 5 interior subulate, arising from the 

 base of the exterior leaflets^ which they considerably exceed in length, and are likewise curved 



over the stigma. Gynostegium sessile. Pollen-masses nearly orbicular. Pods 2-3 inches 

 long, densely covered with short thick rather fleshy processes. This plant can scarcely be 

 referred to any of Decaisne's genera, but I am unwilling to propose a new genus for its reception 

 while my knowledge of the Mexican Asclepiadaccc^e is so imperfect. 

 GoNOLOBUS BiFLORUS, Nutt, Chthamalia biflora, Decaisne in DC. Prodr, 8, jp. 605. Dry 



prairies, western Texas ; Wright^ (No. 543.) 



) Stems 



prostrate, 1-2 feet long, not twining. Flowers dark purple. Lobes of the stamineal crown 

 with an internal ridge which is produced into an inflexed curved process. Follicles 3-4 inches 

 long, echinate with soft prickles. C. pubiflora, Decaisne^ L c.j is Gonolobus prostratus of 

 Elliott, but not of R. Brown. 



GoxoLOBUS (Chthamalia) cyistanchoides, Engehn. & Gray^ PL Lindh. 'pars i, p. 43. Western 

 Texas, Wright. Nearly related to the last, but differs in the smaller flowers, and in the short 

 excavated process of the lobes of the corona. (No. 545, Wright. No. 1951, Berlandier.) 



Gonolobus (Chthamalia) productus (n. sp.) : caule volubili pubescente; foliis ovatis lono-e 



1' 



_i,.^_ __i_J"( -z.-:^ Jt.-_ ,i . 



-• M^ Jri ^ 



