ROBINSON AND GREENMAN. — HIERACIUM, 19 
The material at hand shows conclusively the inconstancy of the charac- 
ters upon which 7. tolucanum was founded. 
8. H. Lemmoni, Gray. Habit, stature, and foliage as in the pre- 
ceding ; inflorescence thyrsoidal; peduncles tomentulose, without dark 
hairs —- Proc. Am. Acad. xix. 70 (1883), & Syn. FI. i. pt. 2, 480. — 
ARIZONA: thea Spring, Cave Cafion, Lemmon, no, 2803 (hb. Gr.) ; 
Santa Rita Mountains, Pringle (hb. Gr.). Doubtfully distinct from the 
preceding. 
9. H. Rosei, n. sp. Perennial, about 5 dm. tall, branched from below 
the middle; stem purple, densely spreading-hirsute with long grayish 
slightly deflexed hairs: leaves about 5, chiefly cauline, 5 to 6 cm. long, 
about half as broad, ovate-oblong, obtuse, undulate and (often obso- 
letely) cuspidate-denticulate, sparsely villous, somewhat paler beneath : 
panicle lax, the lower branches long and naked from the axils of ovate- 
oblong obtuse foliaceous bracts; pedicels filiform, pale-tomentulose, his- 
pidulous; heads about fifty; involucre narrowly campanulate, 8 to 
mm. long, nigrescent, externally subappressed-pubescent: achenes pur- 
plish black, slender, slightly tapering upwards, 4 to 4.5 mm. long ; pappus: 
white, becoming sordid. — Tepic: in the Sierra Madre between Santa 
Gertrudis and Santa Teresa, 8 August, 1897, Dr. J. N. Rose, no. 2080, 
in part (hb. U. S. Nat. Mus., tracing and fragments in hb. Gr.). Readily 
‘distinguished from the related species by its short and broad leaves. 
+++ Achenes 2 to3 mm. long. 
+ Stems decidedly leafy ; leaves large (8 to 12 cm. long). 
10. H. Rusbyi, Greene. Stem erect, 3-4-leaved, 6 dm. high, 
covered to the middle with spreading villous pubescence, nearly glabrous 
above; leaves lance-oblong, nearly entire, villous upon both surfaces, 
acute, the cauline sessile by broad amplexicaul base: branches of the 
loosely corymbose inflorescence minutely flocculent-tomentose, neither 
they nor the pale bracts (12 to 14 in number) of the narrow cylindric 
involucre hispid: heads about 23-flowered.— New Mexico: Mogollan 
Mountains, Rusby (hb. Gr.). Carmvanva: about 64 km. from Guada- 
lupe y Calvo, alt. 2450 m., Nelson, no. 4816 (hb. U. S. Nat. Mus.), Mt. 
Mohinora, Nelson, no. 4897 (hb. U.S. Nat. Mus.). 
11. H. Wrightii, n. comb. Stem tall and stout, fistulose, 4 to 9 dm. 
high, very hirsute to the summit, 5-9-leaved; caudex stout, comose: 
basal leaves oblanceolate, narrowed to a long petiolar base, glaucescent, 
obsoletely glandular-denticulate, villous-hirsute upon both surfaces; cau- 
line leaves lance-oblong, attenuate: panicle many-headed ; the peduncles 
