ROBINSON AND GREENMAN. — HIERACIUM. 17 
+ + Achenes 3.5 to 4.5 mm. long, columnar or very gradually attenuate toward 
the summit. 
++ Cauline leaves none, the basal rosulate, very short. 
4. H. junceum, Fries. Stem filiform, 13 to 22 cm. high, loosely 1- 
several-branched : basal leaves subsessile, obovate, hirsute upon both sur- 
faces, obtuse: heads 3 to 5, few-flowered, on elongated flocculent-pubes- 
cent peduncles; involucres slender, the inner scales elongated, linear, 
with a few dorsal glanduliferous hairs : achenes long and slender, brown- 
ish black, not conspicuously attenuate; pappus reddish white. — Symbol 
Hierac. 144 (1848), & Epicris. Hierac. 149; Hemsl. Biol. Cent.-Am. 
Bot. ii. 259.— Oaxaca: in pine woods, Cambre de Ixlepec, alt. 3300 
m., Liebmann (sketch in hb. Gr.). 
Var. angustifolium, Fries. Leaves narrower: achenes more evi- 
dently attenuated. — Epicris. Hierac. 149 (1862).—“Sierra de 
Moucayo” (hb. Martius, acc. to Fries, 1. c.). Not seen. 
++ ++ Cauline leaves present, lance-linear, entire, 12 times as long as wide. 
= Peduncles glabrous or sparingly hispid. 
5. H. carneum, Greene. Stem nearly or quite glabrous from the 
base, glaucous, branched from the middle: basal leaves elliptical, subses- 
sile, thickish, densely covered with long white hairs (rufous in dried 
specimens) ; stem-leaves long and relatively narrow, acute, nearly or 
quite glabrous: involucral scales green and glabrous: corollas deep 
flesh-colored. — Bot. Gaz. vi. 184 (1881) ; Gray, Proc. Am. Acad. xix. 
69, & Syn. FI. i. pt. 2, 430. New Mexico: oak woods, south base of 
Pinos Altos Mountains, Greene (hb. Gr.). 
Var. chihuahuense, n. var. Basalleaves attenuate below to a 
narrow petiole-like base; lower cauline leaves, peduncles, and involucral 
scales sparingly pubescent: corollas white. — Cuimuanva: foothills of 
the Sierra Madre, Pringle, no. 1315 (hb. Gr.); near Colonia Garcia in 
the Sierra Madre, Nelson, no. 6192 (hb. U. S. Nat. Mus.). 
= = Peduncles tomentulose.’ 
6. H. prionobium, n. sp. Stems 1 to 3, erect, 6 to 8 dm. high, cov- 
ered below with rather copious spreading or slightly deflexed hairs: 
basal leaves spatulate or oblanceolate, 15 to 20 cm. long, 10 to 25 mm. 
wide, obscurely denticulate, rounded at the apex, erect, hairy on both 
surfaces; the cauline leaves lance-linear, sessile, acute, essentially entire, 
6 to 20 cm long, 3 to 15 mm. broad, sparingly pubescent: heads about 
12, in an open a corymbose panicle; peduncles curved-ascending, 1 
VOL. XL.— 
