Blake — A Revision of the Genus Viguiera 89 
pilose on tube, nerves, and teeth, 5.6 mm. long (tube 1 mm.). 
Pales mucronate, nearly glabrous, 7-9.5 mm. long. Achenes 
appressed-silky-pilose, 4.8 mm. long. Awns slender, 3.8 mm. long; 
squamellae 4-6, lacerate, distinct, 0.8 mm. long. — Gray! Proc. 
Am. Acad. v. 161 (1861-62); Vasey & Rose, Contr. U. 8. Nat. 
Herb. i. 72 (1890). — LOWER CALIFORNIA: Cape San Lucas, 
1859-60, Xantus 61 (TypE coLu.: G., K.), 1911, Rose 16341, 
16344, 16356 (U. S.); common on arroyos and mesas, La Paz, 
1890, Palmer 83 (G., K., U. S.); San José del Cabo, 1890, Brande- 
gee 313 (G.), 1897, Anthony 325 (G., K., Mo., U.8.), 1901, Purpus 
491 (K., Mo., U. S.), 1911, Rose 16452 (U. 8.); from El Cajan to 
El Saccatan, 60-150 m., 1905, Nelson & Goldman 7368 (U. 8.). 
39. V. pEeLTorpEA Gray. Erect branched shrub, the branches 
often elongated and drooping; stem up to 3 m. high, from tuber- 
culate-strigillose to densely white-tuberculate-hispidulous, in age 
often glabrate and grayish-white, bearing few to many cymose- 
panicled heads. Leaves mostly opposite, ovate to deltoid- or 
triangular-ovate, acute to rounded at apex, rounded to cordate at 
base, sinuate-dentate to entire, 3-nerved and slightly venose below, 
above dark green to canescent, impressed-veined, from harshly 
tuberculate-hispidulous to densely strigillose, beneath green or 
canescent, from sparsely to densely tuberculate-hispidulous, sub- 
pilosulous, or pilose, or sometimes densely appressed-strigillose, 
often gland-dotted, the hairs sometimes with strongly tubercular 
bases, 1.4-10 cm. long, 0.7-6.7 em. wide; petioles narrowly mar- 
gined or marginless, canescently tuberculate-strigillose or hispidu- 
lous, 2-20 mm. long. Heads 1.6-5 cm. wide, on peduncles very 
variable in length and strigillose or densely tuberculate-hispidulous 
and -hispid; disk 7-13 mm. high, 7-20 mm. thick. Involucre 2- 
Seriate, graduated, 5-8 mm. high, the phyllaries with ovate indu- 
rated base and herbaceous lance-oblong loose often reflexed apex, 
canescently strigillose and often strigose or hispid. Rays 5-8, 
oval, 7-16 mm. long, 4-8 mm. wide; disk-corollas appressed- 
puberulous, 4-5.3 mm. long (tube 0.6-0.9 mm.). Pales broadly 
Scarious-margined, rather abruptly acute, hispidulous on back and 
keel, 7-9 mm. long. Achenes corky on sides in age, more or less 
appressed-pilose, 2.3-5.5 mm. long, 1-1.8 mm. wide. Awns 
2-3 mm. long; squamellae 4-6, fimbriate, usually united to middle 
or beyond on each side of achene, 0.3-1.8 mm. long. — Gray! Proc. 
