246 CUSCUTACE^. 



Fields, &c July, Aug. (T). — Stem hairy, climbing to a great height. Leaves 

 2 — 6 inches long, on petioles of about the same length. Flowers large, blue, 

 purple or nearly white. Introduced. * Common Morning Glory. 



6. C. lacunosus Spreng. : stem smooth, twisted ; leaves cordate acumi- 

 nate, angled at base ; peduncles short, 1 — 3-flowered ; calyx hairy ; corolla 

 tubular, short ; capsule hairy. Jpomcea lacunosa Linn. 



Penn. Muhl. S. to Flor. Aug., Sept. (T). — Flowers white, with a purple 

 rim. Ragged Bindweed. 



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

 mediate lobe dilated at the base, the lateral ones shorter, acute ; peduncles 

 short, 2 — 3-flowered ; segments of the calyx ovate-lanceolate, hairy at the 

 base. Ipomcea nil Pursh. Pharbilis nil Choisy in D. C. 



Penn. MuJd. S. to Car. Aug. (!)• — Flowers 2 or 3, on peduncles shorter 

 than the petioles. Corolla white at base, blue near the border. 



Morning Glory. 



Order LXXXVI. CUSCUTACE^.— Dodders. 



Calyx 4 — 5 -parted, persistent, with an imbricate aestivation. 

 Corolla cut round at the base ; the limb 4 — 5 -cleft, with alter 

 nating scales. Stamens as many as the segments of the corolla. 

 Ovary 2-celled ; styles 2, or none ; stigmas 2. Fruit capsular 

 or baccate, 2-celled ; cells 1 — 2-seeded. Seeds with a fleshy 

 albumen and a spiral acotyledonous embryo. — Leafless climb- 

 ing colorless parasites, with the flowers in dense clusters. 



CUSCUTA. Linn.— Dodder. 

 (Etymology uncertain.) 

 Calyx 5- rarely 4-parted. Corolla globose-urceolate, 4 — 5- 

 cleft. , Stamens 4 — 5. filaments often with scales at the base. 

 Styles 2. Stigmas filiform or capitate. Capsule 2-celled, open- 

 ing all round transversely. 



1. C. Epilinum Weih. : heads of about 5 sessile flowers; calyx 5-parted. 

 the lobes obtuse ; corolla globose cylindric, about as long as the calyx ; 

 styles erect, at length divergent. {D. C.) C. EurofCBa. Beck Bat. \st Ed. 



Parasitic on flax. Schenectady, N. Y. Mass. Dewey. Chester county, Penn. 

 Darlingt. July. 0. — <Siem filiform, long and climbing, orange-colored, leafless. 

 Floivers in small dense heads, pale-yellow or rose-color. Introduced ? Dr. 

 Darlington's C. EuropcBa, which seems to be identical with the New York 

 plant, is referred to this speci||by the author above quoted. Flax Dodder. 



2. C. Gronovii Willd. : stem branched ; flowers pedunculate or more 

 lax, generally 5-parted ; corolla deeply campanulate, open, pellucid-punc- 

 tate, longer than the roundish obtuse calyx-segments ; scales convergent, 

 fimbriate. C Americana Linn. 



Low grounds. N. Y. to Ala. W. to Ohio. July — Sept. (1). — Stem filiform, 

 orange-colored, twining around other plants. Flowers in small cymes or much 

 crowded, yellowish-white, marked with little roundish glands. 



Common Dodder. 



