Blake — A Revision of the Genus Viguiera 49 
beneath venose and somewhat paler but not canescent, densely 
hispidulous or hispid-pilose along the veins and gland-dotted be- 
tween them, 5-7 em. long, 1.1-2.6 em. wide; petioles scarcely 
margined, flattish above, densely tuberculate-hispid, 4-7 mm. 
long. Peduncles 1-3 em. long, densely hispid-pilose like the stem; 
disk 1.1-1.5 cm. high, 1.4-1.8 em. thick. Involucre 3-seriate, 
1.5-2 cm. high, the outer phyllaries a little shorter or sometimes 
longer than the inner, lanceolate to ovate-oblong, subacute to 
acuminate, more or less involute, reflexed, densely tuberculate- 
hispid, the middle oblong-lanceolate, acuminate, the innermost 
in fruit ampliated and elongated, oblong, rounded and membrana- 
ceous-chartaceous at tip, densely tuberculate-hispid or strigillose 
below the apex, 1.5 em. long, 5mm. wide. Rays 10-14, 1.2-2.2 em. 
long, 4-7 mm. wide; disk-corollas puberulous below, 6-7 mm. long 
(tube 1-1.1 mm.). Pales narrow, abruptly acuminate, sparsely 
strigillose on back, 1 em. long. Achenes densely appressed- 
pubescent, 3.5-4.5 mm. long. Awns 3.6—4 mm. long; squamellae 
two pairs, lacerate, acute, 0.6-0.8 mm. long. — Hemsl. Biol. 
Centr.-Am. Bot. ii. 179 (1881). Leighia urticiformis DC.! Prod. 
v. 582 (1836). — MEXICO: Guanasuaro: near Villalpando, 
Mendez (typk couu.: Par., Prod., G.); Stare or Mexico (?): 
near City of Mexico (?), Ehrenberg 1575 (Ber., photog. and 
fragm. G.) 
4. V. subcanescens, sp. nov. Herbacea erecta parce ramosa, 
caule subvalido densissime tuberculato-hispido-piloso, foliis alter- 
nis ovatis acuminatis obscure serrulatis supra dense et aspere 
tuberculato-hispidis et -hispidulis subtus dense canescenterque 
hispidulo-pilosulis pilis subpatentibus ad venas et venulas tuber- 
culato-hispidulis et -hispidis 7-9.5 cm. longis 1.8-3 em. latis, 
capitulis paucis 4.5 em. latis, involucri 5-seriati gradati 1.3 em. alti 
phyllariis exterioribus lanceolatis vel oblongo-lanceolatis herbaceis 
vel subherbaceis tuberculato-hispido-strigosis et -strigillosis apice 
longe reflexis et involutis er apice ampliatis subchartaceis, 
achenio glabro, pap 
Erect, herbaceous, ae branched, the stem pure: rather 
stout, very densely tuberculate-hispid-pilose, the spreading or 
retrorse hairs with strongly persistent bases. Leaves alternate, 
surpassing the internodes, ovate or the upper ovate-lanceolate, 
acuminate, callose te, cuneately contracted into the petiole, 

