T. PLANTS WRIGHTIAN^. 75 



217. P. AFFiNis, Engelm. in PI. Lindh. 2. p. 233. Banks of the Leona, June; 

 in flower. — Flower nearly twice the size of that of P. lutea, an inch and a half in 

 diameter. Bractlets minute. 



218. P. AFFINIS, Engelm. ; in fruit. Hills of the San Pedro River; July.* 



CUCURBITACE^. 



219. Cyclanthera dissecta. Am. in Hook. Jour. Bot. 3. p. 280 ; Gray, PI. 

 Lindh. 2. p. 193. Echinocystis pedata, Scheele. Low prairies, near San Antonio, 

 Texas; May, 



t Melothria pendula, Linn. ; Ton: 8c Gray, Fl. 1. p. 540. Bottom of the 

 Leona ; June. — Although the leaves are thinner and with sharper lobes, this is 

 probably the same as M. chlorocarpa, Engelm. in Lindh. Tex. Coll. 1850, which 

 " differs from M. pendula by the habitat (dry sterile places) , by the firmer and more 

 hispid leaves, with blunter lobes and a narrower sinus, and by the larger and green- 

 ish fruit with smaller seeds. Root branching, annual : flowers monoecious, yellow: 

 fruit green and whitish, striped, elliptical, 5 or 6 lines long, 3 lines or more in di- 

 ameter." Engelm. But from the dried specimens I should not be able to charac- 

 terize this on the one hand, or Mr. Shuttleworth's M. microcarpa on the other. 



220. SicYDiuM LiNDHEiMERi, Gray, PI. Lindh. 2. p. 1 94. Thickets near Austin 

 and San Antonio, Texas. Abundant also in the coll. of 1851. Dr. Wislizenus 

 gathered it at Cerralvo, and Mr. Hinds obtained what appears to be the same spe- 

 cies in Lower California. The pods are fully an inch in diameter, and ripen 10 or 

 12 seeds. These are rounded, nearly orbicular in outline, 2^ to 3 lines in diameter, 

 very turgid, and surrounded by a very narrow margin, which is a little produced 

 each side of the hilum. The foliage varies exceedingly, some leaves being scarcely 

 lobed, and others so much dissected as to eff'ect a transition to 



221. S. LiNDHEiMERi, /3. TENUiSECTUM : foHis 5-partitis, segmentis laciniato- 

 lobatis lobisque linearibus ; bacca minore. — Dry sandy soil, near the Rio Grande, 

 Texas, and New Mexico. (North of El Paso, Widizenus, with almost filiformly 

 dissected leaves.) Berry from half to three fourths of an inch in diameter. There 

 are fine fruiting specimens in Mr. Wright's collection of 1851, in all of which the 

 seeds are narrower than in the foregoing, obovate, and obliquely or obscurely biden- 

 tate at the base ; so that I should regard this as a good species, were it not that 

 Wright's No. 221 has seeds just like those of No. 220. 



222. CucuRBiTA PERENNis, Gray, PI. Lindh. 2. p. 193. Cucumis? perennis, 

 James. Along the Rio Frio, Texas ; June. 



f C. Texan A, Gray, PI. Lindh. 2. p. 193. Banks of the San Pedro River ; native. 



*^* Cactac^, No. 223 - 227. The determinations of these, and of the living 

 plants of the famUy gathered by Mr. Wright, have not yet been received from Dr. 

 Enselmann. 



t Passiflora gossypiifolia, Lam. (P. fcetida. Cat!.) was gathered in Eastern Texas by M. Trecul : also P. 

 suberosa, Linn., in Southern Florida, by Rugel. 



