CONVOLVULACE^E. 249 



2. C. sepium Linn. : stem climbing, angular, twisted ; leaves sagi- 

 tate, very. acute, with the lobes truncate ; peduncles square, 1-flower- 

 ed ; bracts large, cordate, close to the flower. Calystegia sepium 

 Brown. 



HAS. Hedges and woods. Can. to Car. June, July. Z. Stem 

 climbing or trailing, pubescent. Flowers, large, white, on pe- 

 duncles which are longer than the leaves. Great Bind-weed. 



3. C. panduratus Linn, : stem climbing, pubescent ; leaves cordate, 

 entire or lobed and panduriform ; peduncles long ; flowers in fascicles j 

 calyx smooth ; corol tubular-campanulate. 



HAB. Sandy fields. N. Y. to Car. July. It- Root very large 

 and thick. Stems numerous, trailing. Peduncles 1 4. Flowers 

 large, purple. Found in Orange co., N. Y., by Dr. W. Hor- 

 ton, Jun. Medicinal. Man of the Earth. 



4. C. spitham&us Linn. : stem erect or trailing ; leaves oval or ob- 

 long, subcordate, pubescent, hoary ; peduncles 1-flowered, about as 

 long as the leaves ; bracts much longer than the calyx. C. stans Mich, 

 Calystegia tomentosa and spitham&a Pursh. 



HAB. Sandy woods. Can. and N. S. June. It. Stem erect 

 or spreading. Flowers white, on peduncles which are about as 

 long as the leaves. 



5. C. purpureus Linn. : stem twining and climbing ; leaves cordate; 

 acuminate, undivided, entire ; peduncles 2 3-flowered ; pedicels 

 thickened, nodding ; capsule smooth. Ipomwa purpurea Pursh. Torr. 



HAB. Fields, &c. July, Aug. -0. Stem hairy, climbing to a 

 great height. Flowers large, blue, purple or nearly white. In- 

 troduced. Common Morning 'Glory. 



6. C. lacunosus Spreng. : stem smooth ; leaves cordate, acuminate, 

 angled at base ; peduncles short, generally 1-flowered ; calyx hairy j 

 corol tubular, short; capsule hairy. Ipomota lacunosa Linn. Pvrsh. 

 Torr. 



HAB. Penn. Muhl. S. to Flor. Aug., Sept. @. Flowers 

 white with a purple rim. 



7. C. nil Linn. : stem hairy, twining ; leaves cordate, 3-lobed ; pe- 

 duncles short, 1 3-flowered ; calyx very villous ; segments acuminate, 

 subulate ; corol funnel-form. Ipomaa nil PursJi. Torr. 



HAB. Penn. Muhl. S. to Car. Aug. . Flowers 1 2 r on 

 peduncles shorter than the petioles. Corol white at base, blue 

 near the border. -. : -%jr>! Morning Glory. 



2. CUSCUTA. Linn. 



Calyx 5- rarely 4-cleft. Corol globose-urceolate ; limb 

 4 5-cleft, marcescent. Stamens 4 5, inserted into the 

 corol. Stigmas 2. Capsule 2-celled, opening all round 

 transversely ; cells 2-seeded. Pentandria. Digynia. 



1. C. americana Linn. ; flowers in umbellate clusters, pedunculate, 



