Blake — A Revision of the Genus Viguiera 83 
rarely styliferous but sterile, oval to oblong-oval, 7-15 mm. long, 
3-7.5 mm. wide; disk-corollas hirtellous, 3-4 mm. long (tube 0.6- 
0.7 mm.). Pales scarious-margined, hispidulous on back, with 
ovate-oblong body abruptly narrowed into an acuminate stiff 
pungent tip, 6.5 mm. long. Achenes obovate-oblong, black or 
mottled, appressed-pubescent, 3.5-3.8 mm. long, 2 mm. wide. 
Awns slender, 2.2-2.8 mm. long; squamellae 4, quadrate, free, 
fimbriate, 0.7 mm. long. Stamens with pubescent filaments. — 
Spreng. Syst. iii. 615 (1826). Helianthus dentatus Cav. Icon. iii. 
10. t. 220 (‘ 1794” = 1795). H. triqueter Ort. Dec. 76 (1798). 
Viguiera helianthoides HBK.! Nov. Gen. iv. 226. t. 379 (1820); 
DC. Prod. v. 578 (1836); Gray, Proc. Am. Acad. xix. 6 (1883), 
Syn. Fl. i. pt. 2. 270 (1884), & in Wats. Proc. Am. Acad. xxii. 426 
(1887); Millsp. & Chase, Field Col. Mus. Bot. Ser. iii. 119, fig. 
(1904); Cockerell, Torreya xv. 12 (1915). V. Sagraeana DC.! 
Prod. v. 579 (1836). V. microcline DC.! 1. c. (1836). V. canescens 
DC.! 1. c. (1836); Gray, Proc. Am. Acad. xix. 6 (1883), in part, & 
Syn. Fl. 1. c. (but not of DC.). V. triquetra (Ort.) DC.! Prod. 
v. 579 (1836). V. brevipes DC.! 1. ¢. (1836). V. laxa DC.! Prod. 
v. 580 (1836); Gray, Pl. Wright. i. 108 (1852), ii. 89 (1853). 
V. oppositipes DC.! 1. ¢. (1836). V. texana T. & G.! Fl. N. A. 
ii. 318 (1842); Woot. & Standl. Contr. U. S. Nat. Herb. xix. 709 
(1916). Helianthella latifolia Scheele! Linnaea xxii. 160 (1849). 
V. laxa DC. var. brevipes (DC.) Gray, Pl. Wright. i. 108 (1852). 
Helianthus microclinus (DC.) Gomez, Ann. Hist. Nat. Madrid 
xix. 273 (1890). H. Baillonianus Gomez, |. c. (1890). Viguiera 
pedunculata Seaton! Proc. Am. Acad. xxviii. 119 (1893). Viguiera 
Nelsonii Rob. & Greenm.! Proc. Am. Acad. xxxii. 45 (1896). 
Encelia montana Brandegee! Univ. Calif. Publ. Bot. iii. 394 (1909) ; 
Blake, Proc. Am. Acad. xlix. 374 (1913) (where reduced to 
V. helianthoides). — A variable and wide-spread species, of which 
four fairly marked varieties can be recognized. 
Var. brevipes (DC.), comb. nov. (typical form): caule glabro vel 
subglabro, foliis ovatis utrinque viridibus et sparse pubescentibus, 
saepius dentatis. — H. dentatus Cav. 1. c. H. triqueter Ort. 1. c. V 
dentata (Cav.) Spreng. 1. c. V. triquetra (Ort.) DC., V. brevipes DC., 
V.lazxa DC., V. oppositipes DC.1.¢. V. terana T. & G.l.¢. Helian- 
thella latifolia Scheele, 1. c. V. laxa DC. var. brevipes (DC.) Gray, 
l.c. V. pedunculata Seaton, l. c. Encelia montana Brandegee, l. ¢.— 
