Obdee 93.— OONTOLVULACB^. 573 



8 I. pandur^tua Meyer. Wild Potato. (Fig. 321.) Man-of-the-eakth. St. 



— twining ; lya. broad-cordato or panduriform ; ped. I to 5-flower6d, longer ihm the 

 petioles ; cal, smooth, ovate, 3 to 4 times shorter than the ample corolla. — 7). In 

 sandy fields, N. Y. to Dl. and Ga. Sts. several from the same root, 4 to 8f long, 

 slender, smooth. Lvs. 2 to 3' long, and about the same width, acute or obtuse, 

 with rounded lobes at the base, sometimes lobed and hollowed ou the sides and 

 becoming fiddle-.shaped. Ped. bearing several large flowers. Cor. near 3' long, 

 white, with a purple center. Jl., Aug. 



5. CONVOL'VULUS, L. Bind-weed. (Lat. convolvere, to entmne; 

 from the habit of most of the species.) Sepals 5, corolla campanulate ; 

 style 1 ; stigmas 2, linear-cylindrical, often revolute ; ovary 2-celled, 4- 

 ovuled; capsule 2-celled, 4-seeded, or by abortion fewer. — Herbs or 

 shrubby plants, twining or erect. None native. 



1 C. arvensis L. Striate, angular, generally prostrate ; lvs. sagittate, somewhat 

 auriculate; ped. mostly 1 -flowered, bibracteate near the apex; sep. roundish- 

 ovate ; caps, smooth. — If Fields and pastures, Maine to Car., Hot common. Stems 

 several feet long, climbing or prostrate, a little hairy. Leaves 1 — 2' long, the 

 lower ones obtuse. Flowers small, white, often with a tinge of red. The small, 

 acute bracts are near the middle of the peduncle. Ju. 



2 C tricolor L. St. ascending, villose ; lvs. lance-oiovate, suhspaiulate, sessile, 

 ciliate at base ; ped. l-flowered, bracteate, longer than the leaves ; sep. ovate- 

 lanceolate, acute; cor. tricolored; caps. viUous.--<D St. weak, 1 to 3f long. Cor. 

 yellowish in the center, white in the middle zone, and of a fine sky blue on the 

 outer part of the border. Jl. | Eur. 



6. CALYNYC'TION speciosa, native of W. Ind., rarely seen in cul- 

 tivation, may possibly be found wild in Fla. 



7. CALYSTE^GIA, Br. (Gr. naXv^, calyx, areyr], a covering ; allud- 

 ing to the conspicuous calycine bracts.) Calyx 5-parted, included in 



2 large, foliaceous bracts ; cor. campanulate, 5-plicate ; sta. subequal, 

 shorter than the limb ; ova. half bilocnlar, 4-ovuled ; sty. simple ; stig. 

 2, obtuse ; caps. 1-celled, 4-seeded. — Herbs twining or prostrate. . Ped. 

 l-flowered, solitary. 



1 C. Bpithamdeus Br. St. erect or assurgent ; lvs. oblong-lanceolate, subcordate, 

 hoary-pubescent ; ped. l-flowered, about as long as the leaves. — 11 -^1 erect, downy 

 species, 8 — 10' (a span) high, found in fields and hilly pastures. Can. to Penn. W. 

 to 111. Stem branching, leafy, bearing one, often two or more large, white 

 flowers, on peduncles 2 — i' long, issuing from near the root. Leaves 2 — 3' long, J 

 as wide, oval, with an abrupt, cordate base, and on petioles J as long. Bracts 

 concealing the calyx. June. 



2 C. SSpium Br. Rutland Beauty. Olabrous ; stem twining; lvs. cordate- 

 sagittate, tlie lobes truncate and apex generally acute; ped. , quadrangular, 1- 

 flowered; bracts cordate, much longer than the calyx. — % A vigorous climber, 

 in hedges and low grounds. Can. to Car. W. to Iowa. Sts. 6 to 8f in length. 

 Lvs. 2 to 4' long, half as wide. FI3. numerous, large, white with a reddish tinge. 

 Bracts close to the corolla, concealing the calyx. Jn., Jl. -j- (Convolvulus L.) — 

 The wild plant (Convolvulus repens L.) is often more or less pubescent. 



3 C. Catesbeianus Ph. Tomentous ; st. twining ; lvs. oblong-ovate, cordate or 

 sagittate, acute or rather obtuse, petiolate, auricles obtuse; ped. l-flowered longer 

 than the petiole but shorter than the leaves ; bracts lance-oblong, acute ! (obtuse, 

 Ptirsh, subacuminate, Ghoisy), cordate, twice longer than the calyx, half as long 

 as the pwrple corolla. — Sandy soils. Car. and Ga. Sts. a few feet long. Lvs. small, 

 1 to 2' long. Cor. showy, 18'' long. Apr., May. 



4 C. paradoxus Ph. Differs from the foregoing in its bracts, which are " linear 

 and remote from the flower. — ^Va. to Car." (Pursh). Probably a mere variety ; we 

 venture to suggest that both may be only states of C. Sepium. 



