Part 1, 1914] CARDUACEAB : HELENIBAE 15 



the upper ones often hastately lobed and narrower; peduncles 1-3 cm. long, glandular-puberu- 

 lent; involucre hemispheric, about 5 mm. high and 7 mm. broad; bracts narrowly oblanceolate, 

 acuminate, glandular-puberulent; ray-flowers 10-12; ligulcs light-yellow or white, 2 mm. long, 

 with 3 rounded teeth; disk-corollas glandular-puberulent, about as long as the achenes; achenes 

 oblong, hirsute on the callous margins; faces slightly hirsute; pappus of a small crown of lanceo- 

 late squamellae, rather shorter than the hairs, and 2 unequal awns scarcely half as long as the 

 achene. 



Type locality: Realejo, Nicaragua. 



Distribution: Southern California and Arizona to Tepic and San Luis Potosi; Nicaragua. 



Illustration: Bot. Gaz. 15: pi. 13, f. 5. 



7. Perityle urticifolia Rydberg, sp. nov. 



A slender annual; stem 2-4 dm. high, puberulent; leaves opposite, only the uppermost 

 alternate; petioles 1-2 cm. long; blades cordate, thin, 2-5 cm. long, crenate-dentate, sparingly 

 puberulent; peduncles 1-3 cm. long; involucre 3-4 mm. high, 3-5 mm. broad; bracts linear- 

 oblanceolate, puberulent; ray-flowers 6-8; ligules 4 mm. long, deeply 3-toothed, j-ellow; disk- 

 flowers 1.5 mm. long; achenes broadly oblong, glabrous on the faces, hirsute on the narrow 

 callous margins, 1.5 mm. long; pappus of a minute crown and 2 very short awns. 



Type collected at Tepic, Mexico, 1892, Edward Palmer 1960 (herb. N. Y. Bot. Gard.). 

 Distribution: Tepic, Sinaloa,' and Zacatecas. 



8. Perityle aurea Rose, Contr. U. S. Nat. Herb. 1: 84. 1890. 

 A low annual; stem 1-2 dm. high, much branched, hirsutulous and glandular-puberulent; 

 leaves short-petioled; blades cordate or reniform, irregularly lobed and serrate, glandular- 

 puberulent; peduncles short; involucre about 5 mm. high, 7-8 mm. broad; bracts oblanceolate, 

 acute; ligules yellow, less than 2 mm. long; disk-corollas with slender tube; throat campanulate; 

 style-branches with acuminate appendages; achenes 2 mm. long, linear, ciliate on the margins, 

 pubescent on the face; pappus of a crown of united squamellae, fimbriate; awns solitary, short. 



Type locality: Santa Rosalia, Lower California. 

 Distribution: Lower California. 



9. Perityle Grayi Rose, Bot. Gaz. 15: 118. 1890. 



Perityle Emoryi S.Wats. Vtoc. Am. Acad. U: \\6. 1876. 'i>iot P. Emory i Tott. 1848. 

 Perityle Fitchii Palmeri A. Gray, Syn. Fl. N. Am. 1^: 321. 1884. 



A low winter annual; stem branched, sparingly hirsute and slightly glandular-puberulent 

 above, 1-2 dm. high; leaves mostly alternate; petioles 1-3 cm. long; blades thin, sparingly 

 pubescent, ovate in outline, 1-3 cm. long, deeply lobed with sinuately toothed lobes; peduncles 

 1-5 cm. long; involucre hemispheric, 5 mm. high, 7-8 mm. broad; bracts oblanceolate, acu- 

 minate, sparingly puberulent; ray-flowers about 10; ligules white, broadly rectangular, 3- 

 crenate, 2.5-3 mm. long; disk-corollas about as long as the achenes; achenes barely 2 mm. long, 

 oblong, sometimes somewhat falcate, short-hispid on the margins; pappus of many small 

 squamellae united into an erose crown ; awn usually wanting. 



Type locality: Guadalupe Island, Lower California. 

 Distribution: Islands of Lower California. 



10. Perityle Emoryi Torr. in Emory, Notes Mil. Recon. 142. 



1848. 



Perityle nuda Torr. Pacif. R. R. Rep. 4: 100. 1857. 



Perityle Emoryi nuda A. Gray, Bot. Calif. 1: 397. 1876. 



Perityle californica A. Gray, Syn. Fl. N. Am. P: 32L 1884. Not P. californica Benth. 1844. 



Perityle californica nuda A. Gray, Syn. Fl. N. Am. 1-: 321. 1884. 



Perityle Rolhrockii Rose, Bot. Gaz. 15: 114. 1890. 



Perityle Emoryi Ocruttii Rose, Bot. Gaz. 15: U7. 1890. 



Laphamia nuda Benth. & Hook.; Jacks. Ind. Kew. 3: 30. 1894. 



Laphamia Emoryi Benth. & Hook.; Jacks. Ind. Kew. 3: 30. 1894. 



A winter annual, sparingly hirsute as w'ell as glandular-puberulent; stem branched, 1-3 



dm. high; leaves petioled, the lower opposite, the upper alternate; petioles 1-3 cm. long; blades 



cordate, reniform, or flabelliform, palmately lobed and incised, 1-3 cm. long; peduncles 1-3 



