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BOTANY. 



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rarry, Schott. Valley of the Limpia; Bigdoia. Sonora ; Thurher. (No. 1680, Wrigld. No. 

 90-4, 1951; and 2334, Btrlanditr.) This slender vine climhs trees to the height of 30 or 40 feet, 

 or trails over shruhs and other plants. The flowers have an agreeahle odor. I strongly suspect 

 this to be the Gonolohus viridiflorus, Nutt. (not of Boem. & SchuU.) It is certainly the plant 

 so named in my account of the plants collected by Dr. James in Long's Expeditiou, and, I think 

 it was so regarded by Mr. Nuttall, who cursorily examined those plants in my herbarium. 



Sarcostemma elegaxs, Decaisney L c. p. 541? Eocky places, Presidio del Norte, July 

 August; Parry, Camp Bache, and on the Cibolo of the Rio Grande; Bigeloiu. Our plant 

 accords with the description of Decaisne, but it may be a distinct species. It differs from the 

 last in the strongly pubescent stem and leaves ; the flowers twice as large, and the segments of 

 the corolla oblong and obtuse, with a reticulate venation; whereas in S. cynanchoides tbe 

 divisions of the corolla are ovate and acute, with several parallel longitudinal veins. The 

 follicles are pubescent, about 4 inches long, half an inch wide in the middle, and tapering to a 

 long point. 



Sakcostemma undulatum (n. sp.): volubile, glabratum ; foliis lineari-lanceolatis acutis basi 

 subauriculato-cordatis margine undulato-crispatis; pedunculis petiolo 2-3-plo longioribus pluri- 

 floris; corona staminea txteriore pelviformi integerrima, interiore foliolis ovatis obtusis gynos- 

 tegio brevioribus. Mountains east of the Rio Grande, 70 miles below El Paso, June; Parry. 

 Copper Mines, New Mexico; Bigeloio, (jSTo. 1678, Wright.) Stem 2-3 feet long, twining, or 

 sometimes prostrate. Leaves 2-4 inches long, and 5-8 lines wide in the middle; tapering to a 

 long poiutj usually dilated and auriculate-cordate or somewhat hastate at the base; the mid- 

 rib often whitish on both surfaces; the margin more or less undulate or crisped; petioles about 

 half an inch long. Umbel 8-10-flowered. Peduncles 1-1^ inch long, and the pedicels about 



the same length. Flowers half an inch in diameter. Segments of the calyx linear-lanceolate. 

 Corolla rotate, purple, smooth internally and externally, the margin ciliolate ; segments oblong, 

 obtuse. Gyr.ostegium nearly sessile. Pods 3 inches long, 4 lines in diameter, tapering at each 

 end, slightly pubescent. Eesembles S. crispum, Benth.j but that is a humbles pecies, (only half 

 a foot long,) the peduncles barely equal the petioles, and the exterior stamineal crown is 

 annular ; while in our plant it forms a distinct cup. 



Sarcostemma hetekophyllum {Engelm. MSS.; Torr. in Pacif. Railroad Rep, 5^ p. 363): puber- 

 ula, volubile ; foliis anguste-linearibus brevi-petiolatis acutis basi cordatis v. cordato-hastatis 

 (raro) acutiusculis ; pedunculis plurifloris petiolo multo longioribus; corollie laciniis patulis 

 ovatis acutis ciliatis extrorsum ^berulis introrsum glabris (purj)urascentibus ;) corona stara. 

 exteriore pateriformi Integra, inter, foliolis suborbiculatis gynostegium subfequantibus ; folli- 

 culis longe attenuatis. Ravines and rocky places, borders of the Rio Grande, western Texas, 

 New Mexico, and Chihuahuaj westward to Sonora and San Luis Rey, California, April — Jane. 

 (No. 1681, Wright.) Stems numerous^ from a somewhat ligneous base, 1-3 feet long, slender. 



Leaves 1-2 inches long, ^-2^ lines w^ide, the lower and middle ones more or less cordate, or 



cordate-sagittate at the base, the lobes entire or denticulate ; uppermost leaves sometimes acute 

 at each end ; petioles 2-4 lines long. Peduncles 1-2 inches long ; umbel 8-12-flowered, the 

 pedicels much shorter than the peduncles. Flower about one-third of an inch in diameter ; 



exterior corona in the form of a s 

 l>urple. Near S, lineare, Benth.'^ 



Gynostegium nearly sessile. Corolla brownish 



^ We have Sarcostetnina clau8um, Botm, ^ 5fAw//., from Key West, wliere !t was foiiml Ly the late Mr. Blcdg:ett. 



21 k 



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