BOTANY. 149 
corolla (23 unciali) tubulosa, brevi-5-loba ; capsula globosa glabra, Hills and rocky places near 
Puerto de Paysano, western Texas, September; Bigelow. (No. 1617, Wright, is a variety 
with the segments of the leaves broader.) Stem several feet long, twining around other plants. 
Segments of the leaves 1-2 inches long, usually not more than half a line wide. Peduncle 
with 2 subulate bracteoles at the summit, thick and mostly recurved; the pedicel about the 
length of the peduncle. "Tube of the corolla trumpet-shaped, more than two inches long ; the 
limb rose color. 
IpoM@A HETEROPHYLLA, Orteg. Pharbitis heterophylla, Chois. in DC. Prodr. 9, p. 344. Rocky 
hills and prairies along the Rio Grande ; also on the Rio Limpio and Devil's river. (Nos. 508, 
509, a very hairy form, and 1613, Wright.) Sepals an inch long. Corolla more than three 
inches long, pale rose color. 
Ipomma Nit, Roth. Pharbitis Nil, Chois. l.c. Western Texas; Wright, Nos. 1037 and 1612, 
Magdalena, Sonora, October ; Thurber. шиг 
IPoMGA LONGIFOLIA, Benth. Pl. Hartw. p. 16 Ф 345, I. Shumardiana, Torr. in Bot. Marcy's 
Rep. p. 291. Santa Cruz valley, Sonora, July; T'hurber. “Тһе prostrate branches are 6-10 
feet long, forming large patches which are very conspicuous in the prairies. Flowers opening 
in the morning, white with a purple throat," (Z’hurber,) limb nearly three inches in diameter, 
This differs from Captain Marcy’s plant in the larger flowers, but not in other respects. After 
comparison with an original specimen of I. longifolia, I think it must be united with that 
species. 
Іромаа Prs-CaPm, Sweet; Choisy,l. c. p. 349. І. orbicularis, ЕЙ, Sk. 1, p. 257. Sandy 
shores, Brazos Santiago, Texas, May ; Schott. 
ЇРОМФА COMMUTATA, Roem. Ё Sch. Syst. 4, p. 228. І. trichocarpa, EU. Sk. 1, p. 258? In 
cultivated grounds. Rancho San Christobel, lower Rio Grande, May ; Schott. Our specimens 
agree with Berlandier's No. 1931, quoted by Choisy. The species seems to be perennial. 
The capsule is smooth. 
IPOMGA SINUATA, Orteg. ; Choisy, 1. c. p. 362. І. dissecta, Pursh, non Willd. Convolvulus 
dissectus, Linn.; Michx. Fl. 1, p. 139. In shady places along the Rio Grande, from the Pre- 
sidio down to Eagle Pass; August—November. A widely spread species. We have it trom 
Monterey, Mexico, collected by Dr. Edwards and Dr. Gregg. It occurs also in the West Indies 
and as far south as Brazil. 
IPOMGA LACUNOSA, Linn. ; Choisy, l. с. p. 378. Alluvions of the Rio Grande, September, 
October. ; 
TPOMGA COSTELLATA (п. sp.): herbacea, glabriuscula, ramosa ; foliis petiolatis pedatim 7-9- 
partitis, segmentis linearibus vel spathulato-linearibus integris ciliolatis ; pedunculis 1-3- 
floris petiolum paullo superantibus ; sepalis oblongis acutis exterioribus medio subcarinatis vel 
ruguloso-muricatis ; corolla (semi pollicari) tubulosa brevilobata ; capsula glabra. On the Rio 
Grande, from the mouth of Pecos to El Paso, and near the Copper Mines of New Mexico; July- 
October. (Nos. 505 and 1615, Wright.) Annual. Stems, 1—5 feet long, prostrate or climbing, 
slender. Leaves 1-14 inch long, divided nearly to the base into 7-9 mostly very narrow lobes ; 
petiole about as long as the limb.  Pedicels thickened. Calyx glabrous, the exterior sepals 
more or less conspicuously carinate or even winged; the keel rugose-undulate, or sometimes 
muriculate. Corolla scarcely half an inch long, pink, the border with 5 short lobes. Style 
undivided ; stigma capitate, two-lobed, and granulate. Capsule sub-globose, two-celled, the 
cells two-seeded. Seed hairy. This species is allied to I. Coptica. 
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