Potato Family. 117 



* Calyx ijanwscpalous, 

 t Flowers nearly sessile; corolla persistent at the heme of the capsule. 



C. arvensis Beyrich. Stems low. pale, slender; flowers small; ealyx-lobes 

 obtuse, those of the corolla acuminate; scales ovate, deeply fringed all 

 around. Rare; growing on Artemisia and. other herbs: July-August; Lyon, 

 Emmet, and Decatur counties. 



C. chlorocarpa Englm. Stems low, coarse, orange-yellow, branching; 

 flowers white, short-pedicelled or sessile; calyx and corolla with four or five 

 acute lobes; scales usually wanting or small and 2-eleft, or of a few teeth. 

 Ou Polygonums and various herbs; July-September: forms from Emmet, 

 Johnson, Henry, and Muscatine counties have been referred to this species. 

 (C. polyaonorum Englra.) 



f f Flowers pcdicelled; eorolla-lnbes incurred. 



C. inflexa Englm. Flowers pedicelled; calyx and corolla 4— 5-parted, lobes 

 of the corolla acute, erect, inflexed, crenulate; scales a few teeth; capsule 

 brown, capped by the remains of the corolla. Thickets, on Corylus, etc.; 

 rare; Decatur county; reported from Fayette, Poweshiek, and Story counties. 

 (C. coiyti Englm.) 



t t t Flowers pedicelled; carolla-lobes spreadiny. 



C. tenuiflora Engltn. Stems coarse, yellow, climbing high: flowers some- 

 times in 4s, in compound cymes, pedicels thick; ealyx-lobes and corolla-lobes 

 oblong, obtuse; scales included, fringed; styles longer than the ovary. Low 

 grounds: July-August; frequent, on Vernonia. Solidago, Xanthium, Salix. 

 Urtiea, etc.; Emmet, Winneshiek. Johnson, and Decatur counties; reported 

 from Fayette, Benton, Story, and Lee counties. (C. cephalanUiu Englm). 



C. gronovii Willd. Flowers more or less densely panicled, 5-parted; cor- 

 olla-tube campanulate, exceeding the calyx;' lobes obtuse, entire, spreading; 

 scales much fringed above, sparingly along the sides. Most soil; July- 

 August: frequent; Story. Muscatine, and Lee counties; no doubt more gener- 

 ally distributed than our present information indicates. 



* * Calyx of ~> distinct sepals, subtended by similar bracts. 



C. glomerata Choisy. Flowers sessile, white, in dense rope-like twists: 

 the stems slender, decaying early between the flower masses: calyx of 5 dis- 

 tinct sepals, subtended by oblong scarious imbricated bracts; corolla-lobes 

 obtuse, oblong-lanceolate, recurved or spreading. Low grounds, mostly on 

 Compositae; July-September; frequent; Winneshiek, Allamakee, Jackson, 

 Johnson, Muscatine, Henry, Decatur, Taylor, Emmet, Dickinson, and Lyon 

 counties; reported from Fayette, Scott, Story, and Woodbury counties. (C. 

 paradoxa Raf.) 



SOLANACEAE Per*. Potato Family. 



Herbs or shrubs, with watery juice, alternate, rarely opposite, exstipu- 

 late leaves, and regular 5-parted flowers. Calyx persistent. Corolla im- 

 bricate or valvate in the bud. Stamens 5, equal, inserted on the corolla 

 and alternate with its lobes; anthers 2-celled. Style and stigma 1. Fruit 

 a capsule or a berry, usually 2-celled, rarely 3-5-celled. An order with 

 rank-scented leaves and poisonous or narcotic fruits; a fewas the tomato, 

 potato, etc., are edible. 



Fruit a berry. 



Solanum. Anthers connivent, opening apically by two pores. 



Physalis. Anthers separate : calyx becoming inflated : ovary -.'-celled. 



Nicandra. Anthers separate: calyx much inflated in fruit ; ovary 3-5-celled. 



