Blake — A Revision of the Genus Viguiera 149 
(tube 0.8 mm.). Pales narrow, pale, scarcely striate, mucronate, 
greenish at apex, minutely puberulous, 6 mm. long. Achenes black, 
subsparsely pilose, 3 mm. long, 1 mm. wide. Awns 2, spinulose, 
2.5 mm. long; squamellae about 12, oblong, lacerate-fimbriate, 
free, 0.6 mm. long, or 1-2 sometimes elongated and about equalling 
the awns. —‘‘ Viguiera, a narrow-leaved species apparently un- 
described,” Britton, Bull. Torr. Club xix. 150 (1892). — BO- 
LIVIA: cotana at Illimani, 2450 m., Nov. 1911, Buchtien 297 
(tyPE couu.: B. M., G., Mo.); do., Buchtien 3292 (U.§.); Isla 
Titicaca, Lake Titicaca, 3840 m., March 1910, Buchtien 3064 
(U. S.); near La Paz, 3050 m., Rusby 1689 (G., U. S.); without 
definite locality, Bridges (K.). — This species has been distributed 
several times under a manuscript name of Dr. Britton’s which has 
already been used in the genus. The name here used for it was 
selected at a time when I considered it a southern representative 
of the § Chloracra and may be retained as serving to indicate its 
position as a southern analogue of that group. — T. 2. Fie. 24 
100. V. nudibasilaris, sp. nov. Herbacea ramosa, caule infra 
glabrato supra tuberculato-hispido-piloso pilis patentibus persis- 
tentibus, foliis anguste lanceolatis acuminatis basi cuneato- 
acuminatis supra lepidoto-tuberculato-strigosis basibus pilorum 
persistentibus subtus paullulum pallidioribus ad venas et venulas 
submolliter hispido-pilosis inter venulas subglabris vel sparsissime 
hispidulo-pilosulis 5-12 em. longis 1-2 cm. latis, capitulis cymoso- 
paniculatis, involucri 2(-3)-seriati gradati 9-10 mm. alti phyllariis 
lanceolatis vel lineari-lanceolatis basi induratis costatis glabris 
supra herbaceis strigosis tuberculato-hispido-ciliatis, corollis disci 
5.2 mm. longis infra et in dentibus puberulis, squamellis pappi 4-6 
liberis minimis (0.2-0.3 mm. longis). 
Erect, branched, herbaceous, the stem stoutish, purplish, stria- 
tulate, sparsely tuberculate-pilose, below glabrate (the hair-bases 
persistent), above and in inflorescence tuberculate-hispid-pilose 
with spreading persistent hairs. Leaves alternate, narrowly lance- 
olate, acuminate, callose-mucronate, at base cuneately acuminate, 
serrate (teeth 8-12 pairs, appressed, obtuse or acute), or the 
uppermost entire, above dull green, lepidote-tuberculate-strigose, 
the bases of the hairs persistent, beneath slightly paler, along the 
veins and veinlets rather softly hispid-pilose, between them sub- 
glabrous or very sparsely hispidulous-pilosulous, 5-12 cm. long, 
