18 PROCEEDINGS OF THE AMERICAN ACADEMY. 



to 3 cm. long, finely tomentulose and setulose ; heads narrowly cam- 

 panulate, about 30-flowered ; scales of the involucre about 14, linear, 

 acute, nigrescent, dorsally hirtellous and glanduliferous, the inner 8 mm. 

 long : corollas yellow : achenes reddish brown, very slightly attenuate, 



4 mm. long; pappus pure white. — Chihuahua: shaded slopes of the 

 Sierra Madre, 18 September, 1887, Pringle, no. 1313 (hb. Gr.), distrib- 

 uted as H. Sckultzii \ ? near Colonia Garcia, alt. 2,280 m,, Toivnsend Sf 

 Baiber, no. 254 (hb. Gr.), distributed as H. Rushyi, immature and doubt- 

 ful; in the Sierra Madre, Nelson, no. 6128 (hb. U. S. Nat. Mus.). 



++ ++ -M- Cauline leaves oblong, broadly cordate at the sessile clasping base, 2 to 8 

 times as long as broad. 



7. H. crepidispermum, Fries. Stem usually solitary, erect, 3 to 



5 dm. high, covered with long slender widely spreading hairs (becoming 

 bronze color after drying) : basal leaves narrowly obovate, 4 to 13 cm. 

 long, 15 to 35 mm. broad, rounded, or obtuse at the apex, cuspidate-den- 

 ticulate, loosely villous on both surfaces, especially upon the midnerve 

 beneath ; cauline leaves 3 to 8, oblong, acute, 2 to 4 cm. broad, cordate- 

 clasping at the often but slightly narrowed base: heads 7 to 40, at first 

 crowded, later in an open corymb; peduncles tomentulose and covered 

 with short dark glandular bristles : achenes reddish black, 3.5 to 4 mm. 

 lonor, slightly attenuated toward the base as well as toward the summit ; 

 pappus bright white. — Symb. Hierac. 146 (1848), &, Epicris. Hierac. 

 152; AVats. Proc. Am. Acad, xviii. 110; Gray, Proc. Am. Acad. xix. 

 70; Hemsl. Biol. Cent.-Ara. Bot. ii. 259. Crepis stenotheca, Fries, 

 Symb. Hierac. 146 (1848). Heteropleura crep{dispe7-ma, Sch. Bip. 

 Flora, xlv. 435 (1862). IT. tolucanuyn , Ar\.-Vo\x\\ Ann. Couserv. Genfev. 

 i. 92 (1897). — CoAHUiLA : east and south of Saltillo, Palmer, no. 758 

 (coll. of 1880), hb. Gr. Durango : Real del Monte, Ehrenherg, ace. to 

 Sch. Bip., 1. c. Territory of Tepic : near Santa Teresa, Rose, nos. 

 3405, 2080 in part (hb. U. S. Nat. Mus.).. State of Mexico : hillsides, 

 valley of Toluca, Pringle, no. 4183 (hb. Gr.); Holway, no. 3204 (lib. Gr.) ; 

 pine woods, Fslava, valley of Mexico, alt. 2400 m., Pringle, no. 9364 

 (hb. Gr.). Pueui.a: pine woods, Chinantla, Z{ei?i/rtr//m (type, sketch in 

 hi). Gr.) ; hills near Amozoc, alt. 2700 m., Pringle, no. 9360 (hb. Gr.). 

 MORELOS: Popocatepec, alt. 2700 m., Schajfner, ace. to Sch. Bip., 1. c. 

 Vera Cruz: Mt. Orizaba, alt. 3000 m., Seaton, no. 181 (hb. Gr.) ; Mir- 

 ador, Liehmann, no. 447 (sketch in hb. Gr.). Oaxaca : Sierra de las 

 Cruces, alt. 2560 m., Schajfner, ace. to Sch. Bip., 1. c. ; west slope of 

 Mt. Zempoaltepec, alt. 2325 to 2420 m.. Nelson, no. 567 (hb. Gr.). 



