BLAKE. — SPECIES HERETOFORE REFERRED TO LEPTOSYNE. 339 



capitulis 1-1.5 cm. altis 3 cm. diametro (radiis inclusis); squamis 

 exterioribus subcrinitis oblongo-spatulatis obtusis, interioribus oblon- 

 gis obtusis apice fimbriatis (8-10 mm. longis 4-5 mm. latis) ; radiis ca. 

 5 ovalibus 13 mm. longis 8 mm. latis; corollis disci 7 mm. longis infra 

 hirtellis 4-dentatis. — Puebla: dry rocky hillsides, Esperanza, Aug. 

 1907, Purpus 2581 (type in Gray Herb.). 



Sect. 2. Anathysana Blake, n. sect., herbae perennes caulibus 

 pliiribus radice lignea foliis oppositis integris vel pinnatiformibus lobis 

 paucis filiformi-linearibus. Involucrum ut apud §1, squamis interiori- 

 bus 8-12. Flosculi radii fertiles; ei disci saepius exannulati. Styli 

 rami apice incrassati breviter appendiculati. Achenia ut apud §1, 

 epapposa. — T^^pe species Lcptosyne niexicana Gray ( = C. cyclocarpa 

 Blake) . — Three species of Mexico and Socorro Island. 



* Leaves entire, linear-filiform. 



4. C. cyclocarpa Blake, n. nora. Stems numerous from a thick 

 woody base, 6-7 dm. high, slightly pubescent below; leaves 2-6 cm. 

 long, entire or very rarely 3-lobed from near the middle, ciliate at 

 base; heads rather few, long-peduncled, 6-8 mm. high, 1.5-2.5 cm. 

 in diameter including the 8-10 rays; outer scales about half as long 

 as inner ; disk-florets exannulate. — Leptosyne mexicana Gray, in 

 Wats. Proc. Am. Acad. xxii. 429 (1887), not C. mexicana (DC.) Hemsl. 

 (1881). — Named from the orbicular indistinctly margined achenes, 

 those of the ray 4.5 by 4.5 mm. — Jalisco: Rio Blanco, Sept. 1886, 

 Palmer 568 (type of L. mexicana in Gray Herb.) ; near Guadalajara, 

 10 Sept. 1890, Pringle 3570, 24 Sept. 1891, Pringle 3841, 4 Oct. 1903, 

 Pringle 11546. 



* * Leaves pinnately divided into 3-7 linear lobes, the uppermost sometimes 



entire. 



•<- Heads larger, inner involucre 6-8 mm. long; leaves mostly with 3 lateral 

 pairs of lobes; disk-flowers with hairy annulus. 



5. C. pinnatisecta Blake, n. nom. In habit, pubescence, and 

 involucre very similar to the last; leaves 2-3 cm. long, the lobes 

 mucronate-tipped; achenes obovate, 3.5-4 mm. long, 2.5 mm. broad. — 

 Leptosyne Pringlei Rob. & Greenm. Am. Journ. Sci. ser. 3. 1. 155 

 (1895), not C. Pringlei Rob. Proc. Am. Acad, xliii. 41(1907).— 

 Oaxaca: Sierra de San Felipe, 2135 m., 7 Aug. 1894, Pringle 4871 

 (type in Gray Herb.); Puebla: Cerro de Paxtle, near San Luis 

 Tultitlanapa, Sept. 1909, Purpus 4098. 



