ROBINSON AND GREENMAN. — HIERACIUM. : 23 
Toluca, alt. 2900 m., Pringle, no. 4284 (hb. Gr.). Pursia : Popocate- 
petl, ap ey no. 67 (hb. Gr.). Vera Cruz : Mt. Orizaba, Schiede, 
no, 285 (hb. Gr.), type; alt. 8950 m., Liedbmann (sketch in bb. Gr.) ; 
alt. 3050 m., Galeotti, no. 2173 (hb. Be}; Seaton, no, 182 (hb. Gr.) ; 
Rose & ae nos. 5750, 5751 (hb. U. S. Nat. Mus.). Guerrero: 
between Tixtla and Chilpancingo, alt. 1820 to 2140 m., Nelson (hb. 
U. S. Nat. Mus.); top of Sierra Madre near Chilpancingo, alt. 2750 
to 3180 m., Nelson, no. 2192 (hb. U. S. Nat. Maus.) Oaxaca: 
summit of Mt. Zempoaltepec, alt. 3475 m., Nelson, no. 634 (hb. U.S. 
Nat. Mus. ). 
17. H.irasuense, Bentu. Near H. mexicanum but with a stem 
less tall and seldom branched, covered throughout by a dark bristly 
glandular pubescence as well as by a fine short and sordid tomentum: 
leaves longer, 3 to 13 cm. in length, 1 to 2 em. broad, subentire or con- 
spicuously glandular-dentate: heads 10 to 15, crowded. ~ Benth. in 
Oerst. Vidensk. Meddel. 1852, p. 113; Fries, Epicris. Hierac. 144. Re- 
ferred by Hemsl. 1. c. 259 to H. lagopus, Don. — Costa Rica: on the 
Volcano Irazu, alt. 2925 m., Oersted; also at Laguna del nee 
alt, 2300 m., 1 January, 1901, H. Pittier, no. 14,074 (hb, Gr.). 
* » Pubescence on both surfaces of the leaves long, truly woolly, of matted or 
felted hairs. 
18. H.Pringlei, Gray. Stem 34 to 68 cm. high, woolly toward 
the base: leaves chiefly basal, rosulate and decumbent upon the ground, 
obovate to oblanceolate, 7 to 10 em. long, 20 to 35 mm. wide, obscurely 
cuspidate-denticulate: heads 12 to 18, in an open corymb; involucre in 
fruit 1 cm. leng, involved in close wool through which short light- 
colored bristles protrude : achenes columnar, reddish brown, 3 mm. long ; 
P06 ae white. — Proc. Am. Acad. xix. 69 (1883), & Syn. 
FI Q ; Arv.-Touv. Ann. Conserv. Genev. i. 96. — Soutn- 
ERN Gants Rania Rita Mountains, 6 May, 1881, Pringle, no. 314 
(hb. Gr.), 2 June, 1884, Pringle (hb. Gr.), Lemmon, no, 369 (hb. Gr.). 
To be expected in Mexico. 
19. H. jaliscense, n. sp. Root of strong dark brown fibres ; stem 
subflexuous, 48 to 72 cm. high, simple to the corymbosely branched 
inflorescence, glabrate above, lanate toward the base, the hairs long, 
white, widely spreading or somewhat reflexed, matted: basal leaves 
2 to 5, oblanceolate, 5 to 15 em. long, 1.5 to 3 em. wide, erect, cuspidate- 
denticulate, rounded or obtuse, often apiculate at the apex; cauline 
leaves 1 to 3, lanceolate to linear: heads about 10; peduncles bristly 
