276 PROCEEDINGS OF THE AMERICAN ACADEMY. 



of the capsule. — Gen. no. 376; Seringe in DC. Prodr. i. 414; 

 Grenier, Flora, 1840, pt. 1, 266 ; Reichb. Icon. Fl. Germ, v.-vi. 

 t. 228-236 ; Benth. & Hook. Gen. i. 148 ; Pax in Engl. & Prantl, Nat. 

 Pflauzenf. iii. 1 b, 80. 



§ 1. Strephodon, Seringe, I. c. Styles 3-5 : teeth of the cap- 

 sule finally circinate-revolute from the tip. — Our species have pubes- 

 cent leaves. 



C. Tesanum, Britton. Annual, viscid : stems several, slender, 

 nearly erect, leafy below, nearly naked and dichotomous above : leaves 

 oblanceolate or spatulate, 6 lines to 2 inches in length, very pubescent 

 or subcinereous on both surfaces : flowers rather small : petals bifid : 

 styles 3-4 (-5 ?) : capsule H-2 times the length of the calyx. — Bull. 

 Torr. Club, xv. 97. — Hills, Blanco, Texas, Wright; New Mexico 

 on the Mongollons, Greene ; Arizona, Santa Cataline Mts., Lemmon. 

 (Mex., Palmer ; Lower Calif., Brandegee.) 



C. maximum, L. Stoloniferous perennial with stems simple or 

 nearly so, erect or decumbent, becoming a foot or more in height : 

 leaves linear or lanceolate, attenuate : flowers very large for the genus, 

 1 inch in diameter, borne on erect pedicels in simple or branched 

 cymes : sepals oblong or narrowly ovate, obtuse, 3-4 lines long : petals 

 obovate, much exceeding the calyx, deeply notched at the apex : capsule 

 symmetrical, much exserted at maturity. — Spec. 439 ; Ledeb. Icon. 

 Fl. Ross. t. 242 ; Fenzl in Ledeb. Fl. Ross. i. 399 ; Seem. Bot. Herald, 

 51. C. grande, Greene, Pitt. ii. 229. — Alaska. (Siberia.) Asiatic 

 specimens of this species, identified at the St. Petersburg Gardens, 

 show that the capsule becomes cylindric and much longer than 

 figured by Ledebour. 



§ 2. Orthodox, Seringe. Styles normally 5 : teeth of capsule 

 erect or spreading; the edges sometimes slightly reflexed. — DC. 

 Prodr. i. 415. — Our species have pubescent leaves. 



* Flowers comparatively small : petals 1-1 \ times as long as the sepals. 



■t- Pods 1-lf times as long as the calyx : introduced or doubtfully indigenous 



weeds. 



C. viscosum, L. (Mouse-ear Chickweed.) Annual, viscid pu- 

 bescent, 3 inches to a span high : leaves oval or elliptic-oblong, very 

 obtuse ; the lowest narrowed below to a short margined petiole : 

 flowers small, at first densely clustered at the ends of the branches, 

 becoming laxer in fruit, but even the longest pedicels not exceeding 

 the acute sepals (lf-2 lines in length): bracts herbaceous: petals 

 scarcely equalling the calyx: stamens frequently 5. — Spec. 437; 

 Hook. f. Arc. PI. 288 ; Wats. Bibl. Index, 101 ; Wats. & Coulter in 



