Convolvulus. CONVOLVULACE^. 97 



2. Convolvulus panduratus, Linn. Man of the earth. Wild Potato-vine. 



Stem twining ; leaves cordate or panduriform, acuminate , the lobes rounded ; peduncles 

 1 - 5-flovyered ; calyx smooth, slightly mucronate , the two outer sepals obtuse; corolla 

 tubular-campanulate. — Linn. sp. 1. p. 153 ; MicJix. fl. 1. p. 138 ; Ell. sk. I. p. 254 ; Bart. 

 veg. mat. med. t. 23 ; Torr. fi. 1. p. 225 ; Beck, hot. p. 249 ; Darlingt. fl. Cest. p. 131 ; 

 Hook. fl. Bor.-Am. 2. p. 77. 



Root perennial, very thick and often weighing from 10 to 20 pounds, variable in form. 

 Stem 4-8 feet long, generally trailing on the ground, pubescent when young, finally almost 

 smooth. Leaves 2-3 inches long, smooth, roundish-cordate, acuminate, often contracted at 

 the sides and more or less panduriform ; the lobes jounded : petioles 1-2 inches long. 

 Flowers often solitary, particularly toward the upper part of the stem, but usually several in 

 a fascicle ; the common peduncle jointed to the pedicels. Sepals unequal ; the three inner 

 longer, and usually tipped with an abrupt subulate point ; the others mostly obtuse. Corolla 

 nearly two inches long, white, with a purplish tube. Stigma short, somewhat globose. 



Dry fields and borders of woods ; southern part of the State, and on Staten Island. Fl. 

 July - August. Fr. September. The root has long been employed as a domestic medicine, 

 and is a favorite remedy of some "botanic doctors." It is bitterish and somewhat astringent, 

 and, like many other species of the genus, is somewhat cathartic. According to Dr. Barton, 

 it is also diuretic, and is useful in gravel. (See Wood <^ Bache, U. S. Dispens. p. 259.) 



2. CALYSTEGIA. R. Brown, prodr. p. AQ^; Endl. gen.ZQOl. CALYStegu. 



[ From the Greek, kahs, pretty, and siege, a covering ; in allusion to the two large bracts which enclose the calyx.] 



Calyx enclosed in two large leafy bracts. Corolla campanulate-funnelform, obscurely 5-lobed. 

 Stamens included. Style single : stigmas 2, obtuse, terete or globose. Capsule 1 -celled, 

 4-seeded. — Herbs, with reniform or sagittate leaves and axillary 1-flowered peduncles. 



1. Calystegia Sepium, R. Br. Great Bindweed. 



Stem twining ; leaves sagittate, very acute , the lobes obliquely truncate ; peduncles 4- 

 angled ; bracts longer than the calyx, acute. — R. Br. prodr. 1. p. 483 ; Pursh, fl.\. p. 142 ; 

 Hook. fl. Bor.-Am. 2. p. 77. Convolvulus Sepium, Linn. sp. 1. p. 153 ; Engl. hot. t. 313; 

 Torr. fl. I. p. 225 ; Bigel. fl. Bost. p. 78 ; Beck, hot. p. 249 ; Darlingt. fl. Cest. p. 130. 

 C. repens, Linn. I. c. ; Michx. fl. I. p. 137 ; Ell. sk. 1. p. 233. 



Root perennial, descending deep into the earth. Slem smoothish, 4-12 feet long, often 

 purplish. Leaves about 3 inches long and 1^ broad, oblong ; the lobes more or less obliquely 

 truncate : petioles 1-2 inches long. Peduncles longer than the leaves. Bracts oblong- 

 cordate, green bordered with purple, about one half the length of the corolla, with a longitudinal 

 carinate fold, covering the unequal sepals. Corolla white, with the border pale purple or rose- 

 color, nearly three inches long. Stigmas 2, hemispherical, white and granulated. 



Moist grounds, climbing over bushes ; sometimes as a weed in cultivated grounds ; common, 

 particularly in the northern and western counties. June - July. 

 [Floka — Vol. 2.] 13 



