Order 93.— CONVOLVTJLACE.E. 573 



8 I. panduratus Meyer. "Wild Potato. (Fig. 321.) Man-of-tue-earth. St. 



— twining ; lvs. broad-cordate or panduriform ; ped. 1 to 5-flo\vcred, longer than the 

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

 ^andy fields, N. Y. to 111. and Ga. Sts. several from the same root, 4 to 8f loDg, 

 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 on the sides and 

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

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



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

 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-seedeJ, or by abortion fewer. — Herbs or 



shrubby plants, twining or erect. Noue native. 



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

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

 ovate; caps, smooth. — 11 Fields and pastures, Maine to Car., not 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 bract3 are near the middle of the peduncle. Jn. 



2 C. tricolor L. St. ascending, villose ; lvs. lance-obovate, subspatulate, sessile, 

 ciliate at base; ped. 1-flowered, bracteate, longer than the leaves; sep. ovato- 

 lanceolate, acute; cor. tricolored; caps, villous. — 1) 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. f 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. KaXvZ, calyx, Grey?], a covering ; allud- 

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



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

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

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

 1 -flowered, solitary. 



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

 hoarj r -pubescent ; ped. 1-flowered, about as long as the leaves. — 2[ An erect, downy 

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

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

 (lowers, on peduncles 2 — 4' long, issuing from near the root. Leaves 2 — 3' long, £ 

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

 concealing the calyx. June. 



2 C. Sdpium Br. Eutlaxd Beauty. Glabrous; stem twining; lvs. cordate- 

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

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

 in hedges and low grounds, Can. to Car. W. to Iowa. Sts. 5 to 8f in length. 

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

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

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



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

 sagittate, acute or rather obtuse, petiolate, auricles obtuse ; ped. 1-flowered loager 

 than the petiole but shorter than the leaves ; bracts lance-oblong, acute 1 (obtuse, 

 Pursh, subacuminate, Ohoisy), cordate, twice longer than the calyx, half as long 

 as the purple 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 brads, which are " linear 

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

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



