107. Solan AGKAE 193 



4. Hydrolea L. 



H. affinis A. Gray. Wet oround in woods, or in shallow jK)nds, s. 

 111., rare; Alexander, Jackson, Massac, Pulaski, and Union counties. 

 [(?) H. uniflora Raf.|.' 



107. Solanaceae Pars. — Nightshade Family 



1. Trailing or climbing shrubs; leaves entire; fruit a red berry 1. Lycium 



1. Herbs, usually erect, rarely climbing. 

 2. Fruit enclosed in the inflated calyx. 



3. Flowers purple or blue; calyx split to the base 2. Nicandra 



3. Flowers yellowish, usually with a purplish center; calyx toothed, not 



split 3. Physalis 



2. Fruit not enclosed in an inflated calyx. 



4. Corolla rotate ; anthers connivent. 



5. Anthers mostly opening by apical pores or clefts; seeds glabrous 



4. Solanum 



5. Anthers tapering to a sharp or narrow sterile tip, dehiscing from 



apex to base; seeds pubescent 5. Lycopersicum 



4. Corolla not rotate; anthers separate. 



6. Corolla campanulate, purplish, veiny, the lobes slightly unequal; 



calyx campanulate, persistent, reticulate-veined in fruit; inflores- 

 cence large and spike-like 6. Hyoscyamus 



6. Corolla funnelform ; flowers solitary. 



7. Calyx tubular, soon circumscissile above the base; flowers 6-20 



cm long; capsules usually spiny 7. Datura 



7. Calyx deeply 5-cleft, persistent; flowers somewhat smaller; cap- 

 sules not spiny 8. Petunia 



1. Lycium L. — Matrimony-vine 

 1. Leaves lanceolate; corolla-tube longer than the limb; calyx-lobes 

 obtuse; occasional about old dwellings and along roads; escaped 

 from cult. ; native of Eurasia. May-Sept. Common Matrimony- 

 vine L. halimifolium Mill. 



1. Leaves rhombic-ovate to ovate-lanceolate; corolla-tube shorter 

 than the limb; calyx-lobes acute; sometimes cult, and occasion- 

 ally spont. ; native of China. June-Oct. Chinese Matrimony- 

 vine L. chinense Mill. 



2. Nicandra Adans. — Apple-of-Peru 



N. physalodes (L.) Gaertn. Fields and waste places, occasional; 

 native of Peru. July-Sept. 



3. Physalis L. — Ground-cherry 

 1. Stems and leaves sparsely pubescent or glabrous. 



2. Plants perennial with a horizontal rhizome, the stem often 

 breaking off when pulled out of the ground. 

 3. Pedicels glabrous. 



4. Leaves ovate, sharply dentate; flowers white; fruiting calyx 

 red, 4-5 cm long; waste places, occasional, rarely spread- 

 ing from cult.: nati\e of Eur. Chinese Lantern Plant 

 P. alkekcngi L. 



