18 PROCEEDINGS OF THE AMERICAN ACADEMY. 
to 3 cm, long, finely tomentulose and setulose; heads narrowly cam- a 
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, 
4mm. long; pappus pure white. — Curmuanva: shaded slopes of the 
Sierra Madre, 18 September, 1887, Pringle, no. 1313 (hb. Gr.), distrib- — 
uted as H. Schultzit ; ? near Colonia: Garcia, alt. 2,280 m., Townsend & — 
Barber, no. 254 (hb. Gr.), distributed as H. Rusbyi, immature and doubt- 
ful; in the Sierra Madre, Nelson, no. 6128 (hb. U. S. Nat. Mus.). 
++ ++ ++ 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 85 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. 
long, slightly attenuated toward the base as well as toward the summit; 
pappus bright white. — Symb. Hierac. 146 (1848), & Epicris. Hierac. — 
152; Wats. Proc. Am. Acad. xviii. 110; Gray, Proc. Am. Acad. xix. 4 
70; Hemsl. Biol. Cent.-Am. Bot. ii. 259. Crepis stenotheca, Fries, 
Symb. Hierac. 146 (1848).  Heteropleura crepidisperma, Sch. Bip. — 
Flora, xlv, 435 (1862). H. tolueanum, Arv.-Touy. Ann. Conserv. Genev. © 
i. 92 (1897). — Coanvita: east and south of Saltillo, Palmer, no. 758 
(coll. of 1880), hb. Gr. Duranco: Real del Monte, Ehrenberg, acc. to 
Sch. Bip. 1.c. Trrrirory or Tepic: near Santa Teresa, Rose, nos. : 
_ 8405, 2080 in part (hb. U. S. Nat. Mus.). Srate or Mexico: hillsides, 
_ valley of Toluca, Pringle, no. 4183 (hb. Gr.); Holway, no. 3204 (hb. Gr.) 3 
? pine woods, Fslava, valley of Mexico, alt. 2400 m., Pringle, no. 9364 ; 
(hb. Gr). Purpia: pine woods, Chinantla, Liebmann (type, sketch in ~ 
hb. Gr.); hills near. Amozoe, alt. 2700 m., Pringle, no. 9360 (hb. Gr.je 4 
_ Morevos: Popocatepee, alt. 2700 m., Schaffner, acc. to Sch. Bip., 1G 
Vera Cruz: Mt. Orizaba, alt. 3000 m., Seaton, no. 181 (hb. Gr.) ; Mir 
ador, Liebmann, no. 447 (sketch in hb. Gr.). Oaxaca: Sierra de Jas 
_ Cruces, alt. 2560 m., Schaffner, ace. to Sch. Bip., 1. ¢.; west slope of ’ 
_ Mt. Zempoaltepec, alt. 2325 to 2420 m., Nelson. no. : a 
At. 2 - 2 +» Nelson, no. 567 (hb. Gr.)- 
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