MONOPETALOUS EXOGENOUS PLANTS. 435 



* Flowers pedicded, with few and distant bracts ; calyx A-5-deft ; corolla bell- 

 shaped, i)ersis(ent at the base of the capsule. 



C. ARVENSis, Beyrich. Low ; flowers small, 5-parted, in 

 loose umbel-like cymes; lobes of the corolla laiiceolaie, 

 acuminate, spreading or reflexed, longer than the tube; 

 scales ovate, often partly exserted; capsule globose, thin, 

 yellowish. Fields and sterile soil, on small herbs. June 

 and July. Stems 1° high ; flowers the smallest of our 

 species. 



C. Gronovii, Willd. Stem climbing high; flozvers 

 mostly 5-cleft, in loose paniculate cymes ; lobes of the co- 

 rolla ovate, obtuse, spreading, mostly shorter than the tube ; 

 scales large, confluent at the base; capsule globose, brown. 

 (C. Americana, Pursh., DC.) Low shady places, on coarse 

 herbs. August-October. 



0. NEUROPETALA, Eugelm. Stem branching; flowers 

 rather large, 5-parted, in smooth umbel-like cymes ; lobes 

 of the calyx ovate-lanceolate, acute ; lobes of the corolla 

 ovate, acuminate, crenulate, 1-nerved, spreading, as long as 

 the tube; scales ovate, incurved, as long as the tube. 

 Damp soil. May. 



C. ROSTRATA, Shuttl. Stem twining high ;/o26;er5 large, 

 5-parted, in umbel-like cymes; lobes of the calyx ovate, 

 obtuse; lobes of the corolla ovate, obtuse, spreading and at 

 length reflexed, half as long as the tube ; scales connate at 

 the base ; cafjsiile large, acute. Shaded moist places on 

 tall herbs, on the mountains. 



** Flowers sessile, in compact clusters ; calyx of 5 separate sepals, surrounded by 

 several similar bracts; corolla persistent at the apex of the capsule. 



93. NIGHTSHADE FAMILY. Order, Solanace^. 



Herbs or shrubs, with colorless juice, alternate leaves, 

 and regular axillary or supra-axillary flowers ; calyx 4-7- 

 cleft, or 4-7-toothed, persistent, often inflated in fruit; 



