570 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



1. Margaranthus solanaceus Schlecht. Ind. Sem. Hort. Hal. 1838; Linnaea 13: 



Litt. 99. 1839. 

 Type locality: " Nascitur in terris Mexicanis locia calidioribus." Described from 

 plants gi'own fi-om seeds sent by Ekreuberg. 

 Range: New Mexico and Arizona to Mexico. 

 New Mexico: Santa Rita; Van Pattens; Mangas Springs. 



2. Margaranthus purpurascens Rydb. Mem. Torrey Club 4: 317. 1896. 

 Type locality: New Mexico. Type collected by Rusby (no. 307). 

 Range: Southwestern New Mexico. 



New Mexico: Mogollon Mountains; Kingston. 



7. PHYSALIS L. Ground-cherry. 



Annual or perennial herbs, 50 cm. high or less, glabrous or pubescent; leaves entire 

 or toothed; flowers axillary, usually solitary, nodding in anthesis; calyx much inflated, 

 completely covering the fruit, usually 5-angled, the lobes connivent; corolla open 

 campanulate-funnelform, yellowish, often with a darker center, with 5 short lobes; 

 fruit a globose pulpy berry with numerous seeds. 



KEY TO THE SPECIES. 



Annuals. 



Plants pubescent nearly throughout. 



Plants stout, erect; leaves sinuate-crenate 1. P. neomezicana. 



Plants slender, diffuse; leaves nearly entire 2. P. pubescens. 



Plants glabrous, or with a few hairs on the young branches. 



Corolla narrowly campanula te, less than 3 mm. broad 3. P. lanceifolia. 



Corolla rotate-campanulate, more than 10 mm. broad. 

 Pedicels much longer than the fruiting calyx; corolla 



yellow 4. P. ivrightii. 



Pedicels usually shorter than the fruiting calyx; 



corolla with a purplish blotch in the center 5. P. ixocarpa. 



Perennials. 



Leaves glabrous, the rest of the plant mostly so. 



Leaves broadly ovate, sinuate; calyx pyramidal, much 



inflated 6. P. macrophysa. 



Leaves lanceolate, entire or nearly so; calyx ovoid, little 



inflated 7. P. longifolia. 



Leaves, as well as the rest of the plant, pubescent. 

 Pubescence at least in part stellate. 



Plants low, densely and conspicuously stellate- 

 pubescent; leaves as broad as long, many of 



them orbicular, obtuse 10. P. cinerascens. 



Plants tall, finely and sparsely stellate-pubescent, 

 the branching of the hairs noticeable only under 



a lens; leaves ovate, acute 11. P.fendleri. 



Pubescence not at all stellate. 



Pubescence fine and dense, appressed, often grayish.. 12. P. hederaefolia. 

 Pubescence, at least in part, of long spreading hairs. 

 Plants very viscid, densely jjubescent, spread- 

 ing; leaves broadly ovate, obtuse 13. P. coniata. 



Plants with a few long hairs, scarcely viscid, 

 erect; leaves lanceolate or nearly so, acute. 



Pubescence long and soft, spreading 8. P. lanceolata. 



Pubescence of fewer, short, scarcely spread- 

 ing haii's 9. P. polyphylla. 



