Standley — The American Species of Fagonia. 245 



Stems densely glandular 3. F. viscosa. 



Stems not glandular, sparingly scaberulous on the angles 

 or glabrous. 

 Beak of the fruit 1 to L.5 mm. long; steins usually 



scaberulous; North American ... S). F. californica. 

 Beak 2 to 3 mm. long; stems glabrous; South Amer- 

 ican 10. F. chilensis. 



Leaflets pubescent, often glandular. 



Plants not glandular; South American 7. F. aspera. 



Plants more or less glandular; North American. 

 Pedicels shorter than the fruit. 



Stipules long and stout; leaflets 8 to 13 mm. long; 



stems densely glandular . . . 4. F. pachyacantha. 

 Stipules short, slender; leaflets 3 to 10 mm. long; 

 stems sparingly or often scarcely at all glandular. 



8. F. bar clay ana. 

 Pedicels longer than the fruit. 

 Leaflets linear ; stipules 4 to 5 mm. long, spreading; 



stems sparingly soft-villous 5. F. insularis. 



Leaflets lanceolate or linear-oblong; stipules 2 mm. 



long, reflexed ; stems scantily scaberulous . 6. F. rosei. 



1. Fagonia scoparia Brandegee, Univ. Calif. Publ. Bot. 4 : 181. 1911. 



Type locality, "On Cerro del Macho, Coahuila." 



Perennial with numerous very slender, broom-like, erect, glabrous, 

 striate, not angled branches; leaves unknown, apparently wanting; stip- 

 ules 1 mm. long or less, triangular-subulate, spinescent tipped; flowers 

 terminating the branches or on slender pedicels mostly about 15 mm. 

 long; sepals persistent, lanceolate or lance-ovate, acute or somewhat 

 acuminate, 4 mm. long or less; petals rose purple, about 5 mm. long, 

 acute or acuminate; fruit 6 mm. long, hirsutulous, the beak not seen. 



Specimens examined: Coahuila: Cerro del Macho, June, 1910, Purpus 

 4495, type collection. 



This is a very remarkable species and comes from a locality far distant 

 from the usual range of the genus in North America. Mr. Brandegee 

 reports that although some of the specimens bear young branches there 

 are no leaves on any of them. The habit of the plant is different from 

 that of our other species, the flowers are smaller, the petals have scarcely 

 any claws, and the sepals are persistent instead of caducous. Doctor 

 Rydberg's diagnosis of the genus in the North American Flora must be 

 changed to include this plant, especially that part dealing witb the leaves 

 and the persistence of the sepals. Perhaps when more complete material 

 is secured the plant may prove to be the type of a new genus. 



i'. Fagonia palmeri Vasey & Rose, Contr. Nat. Herb. 1 : 82. 1S90. 



Type locality, "Santa Rosalia," Lower California. 



A stout, rigid, much branched plant, growing in dense clumps 30 to 

 45 cm. high ; stems yellowish, angled and striate, densely glandular, some- 



