OF ARTS AND SCIENCES. 183 



linear, nearly equalling the tube of the corolla; the latter appar- 

 ently yellowish, 4-5 lines in length, with small only slightly 

 spreading limb: style exserted; nutlets small, shining, white or 

 discolored, scarcely keeled. — Alkaline meadows, Hacienda de An- 

 gostura, San Luis Potosi, July, 1891 (n. 3802). Distributed as a 

 form of L. striatum, Lekni., equalling Schaffner's no. 728. A more 

 careful examination shows that it is not very near Schaffner's doubt- 

 ful plant, and is certainly distinct from L. strictum, which has 

 linear acute leaves, narrow bracts, and keeled nutlets. Mr. Prin- 

 gle's no. 3245, distributed last year as L. strictum, probably also 

 represents a new species. It is much more robust than L. strictum, 

 and has a fusiform root more than half an inch in thickness. 



Ipomcea orxithopoda. Glabrous, stem slender, twining, an- 

 gulate, dark colored: leaves very deeply palmately or rather sub- 

 pinnately 5-7 parted; lobes linear, 1^-2 inches long, 1-2 lines broad, 

 obtuse, apicuiate, entire or wavy; the edges revolute; petioles 6-8 

 lines long: peduncles springing from most of the axils, but many 

 of them abortive; the developed ones 2-3 inches long, one-flowered; 

 pedicels | inch long, somewhat thickened upward: sepals orbicular, 

 thin, 5-6 lines in diameter, rounded or even retuse at the summit, 

 purplish on the margins : tube of the corolla very short, included 

 in the calyx, limb 1^-2 inches in diameter, with a broad open 

 throat, appressed-villous on the outer surface, color uncertain: fruit 

 not seen. — Hills, Canoas, San Luis Potosi, July, 1890 (n. 3553.) 



Gerardia punctata, Kob. (P. A. A., XXVI. 172). Additional 

 specimens of this plant, collected at Carneros Pass, Coahuila 

 (n. 3682), and Las Canoas, San Luis Potosi (n. 3938), show that it 

 is probably perennial. The corolla sometimes attains a length of 

 16 lines. The name was unfortunately chosen, since the punctate 

 character of the calyx appears to be exceptional, and perhaps due 

 to the presence of a fungus. Notwithstanding its seemingly peren- 

 nial nature and longer flowers, this species may prove to be the 

 G. dasyantlm, Cham. & Schl., insufficiently characterized in 

 Linnsea, V. 104, and DC. Prod., X. 517. 



Beloporoxe fragilis. Stem 3-5 feet high, somewhat branched, 

 smooth, scarcely striate, strongly contracted above the nodes and 

 readily disarticulating in a dried state; the transverse lines con- 

 necting the bases of the petioles often bearing a tuft of hairs, 

 especially in the younger parts of the plant: leaves ovate, acumi- 

 nate, blunt at the apex, obtuse or rounded at the base, li-3 inches 

 long, nearly half as broad, minutely pubescent above, nearly smooth 



