BOTANY OF LA SALLE COUNTY. 53 



on slender pedicels; M.; Ju. J. Grassy places. 

 CERASTIUM. A. or P. Mouse-ear, Chickwood. 

 sepals 5 or 4; petals 2 cleft or entire. Flow- 

 ers W. 



C. viscosum. A. Hairy and clammy, nearly erect, 

 4 to 9 in.; leaves obovate; petals shorter than 

 catyx. M. J. , Grassy places. Rare. 



C. vulgatum. P. clammy-hairy, spreading 1 ; leaves 

 oblong; petals equal to calyx; M. J. Common. 



C. nutans. A. very clammy-soft-hairy, erect, 

 slender, grooved, spreading-branched, 6 to 20 in. 

 leaves lancolate; petals larger than calyx; pods 

 3 times length of calyx, M. J. Moist lands. 



C. oblongifolium. Erect or declined, soft-hairy; 

 leaves oblong-lanceolate mostly obtuse; petals 

 twice length of calyx. Ap. Ju. On rocky 

 banks; quite showy. 



C. arvense. P. In tufts, erect or not, slender, 4 

 to 8 in., leaves, narrow, obcordate more than 

 twice length of calyx; M. J., Dry or rocky lands. 



Order 16. PORTULACACAE. PURSLANES. 

 Plants with fleshy stems and leaves, a watery 

 juice and showy flowers. 



PORTULACA. A. Prostrate, spreading, leafy. 

 P. oleraceae. Purslane. Stems thick; leaves obo- 

 vate, flowers small, sessile, Y. cult, grounds. 

 TALINUM. Erect; peduncle hair like, stiff. 



T. teretifolium. P. Leaves long, slender, cylin- 

 drical, clustered; peduncle branched; flowers Pi. 

 Ju. Aug. Sandy lands near Ottawa. 

 CLAYTONIA. Roots tnberous; flowers racemed. 

 C. Virginica. Spring-beauty, Stem leaves two, 

 long, narrow, thick, pale G., flowers bell shaped, 

 Pi., y in. broad; Ap. M.; Woods. 



