fpomasa. CONVOLVULACE^. 213 



= = = = Calj'x 3 to 6 lines long, thinnish, pilose or at least ciliate with some long and soft 

 hairs rising from a more rigid or papilliform base, more or less longer than the small and thin- 

 walled globular 12-L-clled capsule, which is sparsely pilose but sometimes glabrate at the upper 

 part: seeds glabrous : stems freely twining: root annual. 



I. COmmutata, Roem. & Sch. Hirsute-pubescent or glabrate : leaves (2 or 3 inches 

 long), cordate, some entire, some strongly 3-lobed with middle lobe ovate-lanceolate and 

 acuminate ; the lateral usually shorter and broader, sometimes again 2-lobed : peduncles 

 slender, li to 3 inches long, 1-3-flowered : sepals oblong, acuminate, 5 lines long: corolla 

 an inch or more long, purple or pink. Syst. iv. 228 ; Choisy, 1. c. Convolvulus Carolinus, 

 L. Spec. i. 154 (Dill. Elth. 100, t, 84, fig. 98) ; Michx. Fl. i. 139. fpomcea Carolina, Pursh, 

 Fl. i. 145, not L., which is W. Indian. /. trichocarpa, Ell. Sk. i. 258, which slightly antedates 

 the name commutata, but is misleading, the fruit being not rarely glabrate or glabrous. 

 Dry or low grounds, S. Carolina to Texas. 



I. lacunosa, L. Slightly pubescent or hirsute, or nearly glabrous : leaves as the pre- 

 ceding or less lobed, more commonly ovate-cordate and entire, conspicuously acuminate : 

 peduncles shorter : sepals commonly broader and mostly naked, except the long-ciliate 

 margins : corolla half inch or so in length, narrow-f unnelform, white or with a purple 

 acutely 5-anguhite border : globose capsule more turgid and pilose. Spec. i. 161 (Dill. 1. c. 

 t. 87, fig. 102) ; Michx. 1. c. ; Ell. 1. c. Convolvulus micranthus, Riddell, Syn. Fl. W. States, 

 70. River banks and low grounds, Pcnn. to Illinois, S. Carolina, and Texas. 



I. triloba, L. Stems slender, sparsely pubescent : leaves usually glabrous, very deeply 

 3-lobed or almost 3-parted ; the divisions mostly entire ; the middle ovate or lanceolate- 

 ovate with narrowed base ; the lateral semicordate : peduncles usually elongated : sepals 

 3 lines long, oblong-ovate : corolla narrow, two-thirds inch long, resembling that of the 

 preceding, but purple. Choisy, 1. c. 383; Chapm. Fl. 343. Key West, Florida; perhaps 

 introduced. (Trop. Amer.) 



= = = = = Calyx only 2 lines long, naked and glabrous, shorter than the glabrous simply 

 2-celled thin-walled capsule: herbage glabrous throughout: root not seen. 



I. "Wrightii. Stems very slender: leaves all digitately divided into 5 narrowly lanceolate 

 entire leaflets (all 12 to 18 lines long, or the lateral shorter, obtuse or acutish and mucro- 

 nulate) : peduncles slender, 1-flowered, not exceeding the petiole : sepals ovate, very obtuse, 

 equal : corolla pink or purple, narrowly f unnelform, half inch long : capsule ovoid, 4 lines 

 long: seeds globular, minutely and densely puberulent. Texas, Wriijlit, probably fro7ii 

 the southern part of the State. Habit of /. i/nintjnefolia, but leaves, corolla, &c., different. 

 A plant resembling it was collected by Dr. Palmer on the Yaqui River, in the north- 

 western part of Mexico, in which the leaves seem to be pedate, and the -long filiform 

 peduncles coil in the manner of tendrils. 



I. cardiophylla. Very glabrous : leaves broadly cordate and with basal lobes somewhat 

 incurved, entire, acuminate, an inch or two long : peduncles mostly 1-flowered and shorter 

 than the slender petiole : sepals ovate, acute, thickisli but scarious-margined, more or less 

 muriculate-glandular on the back : corolla purple, three-fourths inch long, campanulate- 

 funnelform above the narrow tube, which barely equals the calyx : capsule ovoid, half 

 inch long ; the thin valves finely lineolate : seeds oval, brownish-puberulent. Western 

 borders of Texas, in the mountains near El Paso, Wright. In calyx and foliage considerably 

 resembling 7. violacea. 



~*~~ -*~- H Stems erect or diffuse, feebly if at all twining, never creeping or even prostrate : leaves 

 or their divisions all linear or narrower and entire. 



-H- Leaves simple and entire : flowers large : root perennial, immense, weighing from 10 to 100 

 pounds. 



I. leptoph^lla, Torr. Very glabrous: steins erect or ascending (2 to 4 feet high), and 

 with recurving slender branches : leaves linear (2 to 4 inches long, 2 or 3 lines wide), short- 

 petioled, acute : peduncles short, 1-2-flowered : calyx 3 or 4 lines long ; the sepals broadly 

 ovate, very obtuse, outer ones shorter : corolla pink-purple, fimnelform, about 3 inches 

 long : capsule ovate, an inch long : seeds rusty-pubescent. Freni. Rep. 95, & Emory Rep. 

 148, t. 11. Convolvulus Caddoensis, Buckley in Proc. Acad. Philad. 1862. Plains of Ne- 

 braska and Wyoming to Texas and New Mexico : a striking and showy species, first col- 

 lected, in Long's Expedition, by Dr. E. James, who singularly mistook it for an annual. 

 Torr. in Ann. Lye. N. Y. ii. 223. (Convolvulus.) 



