THISTLE FAMILY 889 



hispidulous-ciHolate margins, deflexed, firm; leaves of the floral branches less than 

 1 cm. long, spreading and becoming bract-like above; involucre turbinate, 7-8 

 mm. wide; bracts imbricate, coriaceous below, with green obovate or spatulate 

 green tips, the outer rounded at the apex; Iigules pale, 5 mm. long. Salt marshes: 

 Utah. So7i. S. 



67, A, Hallii A. Gray. Stem strict, 2-5 dm. high; lower leaves linear, the 

 upper Hnear-oblong, 2-5 cm. long, those of the branches much smaller, all entire; 

 involucres 3-4 mm, high, 4-7 mm. broad; bracts imbricate, rather thick, spatu- 

 late or oblanceolate, rounded and callous, mucronate at the apex; Iigules 4-6 mm. 

 long, white or whitish. Dry places: Wash. — Mont.— Ore. SubmonL—Mont, S. 



68. A. proximus Greene. Stem 4-6 dm. high, glabrous below, sparingly 

 pubescent above; leaves linear-lanceolate or lanceolate, entire, sessile, 5-10 cm. 

 long, smooth beneath, scabrous above, light green, spreading; disk about 9 mm. 

 high, 10-15 mm. broad; outer bracts obtuse, mucronate; Iigules flesh-colored or 

 rose, 8-10 mm. long. River banks: AVyo.^Mont. SubmonL — MonL Au-S. 



, 69. A. phyllodes Rydb, Stem 5-10 dm. high, leafy, glabrous below, pubes- 

 cent in lines above; leaves thin, the lower usually more or less serrate, with small 

 distant teeth, all glabrous on both sides, auriculate-clasping; disk 8 mm. high, 

 about 12 mm. broad; outer bracts oblanceolate, acute, foliaceous, usually slightly 

 exceeding the disk; rays violet, 8-10 mm. long. Meadows: w Neb. — e Colo. 

 Plain, Au. 



70. A. Mearnsii Rydb. Stem 3-10 dm. high, leafy, branched, glabrous 

 below, sparingly pubescent above; leaves 5-10 cm. long, ascending-spreading, 

 sessile, entire, glabrous beneath, scabrous or glabrate above; disk about 8 mm. 

 high and barely 1 cm. broad; bracts oblanceolate, acute, some longer than the 

 disk; Iigules about 8 mm. long, white or pinkish. River banks: Sask. — Wyo,— 

 Ida. — B.C. Submont. — Mont. JI-0. 



71. A. Douglasii^ Lindl. Stem 4-10 dm. high, glabrous and shining below, 

 pilose above; leaves linear-lanceolate or linear, 5-15 cm. long, glabrous or nearly 

 so; involucres 8-10 mm. high, about. 15 mm. wide; bracts linear, acute or acumi- 

 nate, with often squarrose tips, the outer scarcely longer than the inner; Iigules 

 light blue, 10-12 mm. long. Moist places: Mont.— Wyo. — n Calif.— B.C. Sub- 

 7nont. Au-S. 



72. A. fulcratus Greene. Stem decumbent at the base, red-purple, more or 

 less puberulent, 3-4 dm. high; leaves hnear, 5-10 cm. long, entire, glabrous, sca- 

 brous-ciliolate; disk about 1 cm. high and broad; bracts in about 2 series, mostly 

 green, the outer foliaceous, linear, 1-2 cm. long; hgules about 1 cm. long, rose- 

 purple or rose-lilac. Valleys: Colo. Mont. Jl. 



73. A. cordalenus Henders. Stem erect, 2-3 dm, high, pubescent above; 

 leaves 5-8 cm. long, 5-10 mm_. wide, entire or with a few distant scrratures, 

 strongly ciliate; disk 5-7 mm. high and 7-10 mm. broad; outer bracts linear, 1-2 

 cm. long, green, the inner with white margins and foliaceous tips; Iigules blue 

 or violet, 8-10 n\in. long. Moist river bars: Ida. Subniont, Au. 



74. A. Eatonii (A. Gray) Howell. Stem 3-10 dm. high, glabrous; leaves 

 narrowly linear or lance-linear, sessile, thin, entire; involucre about 7 mm. high, 

 7-10 mm. broad; bracts glabrous, linear or lance-linear, acute; hgules 7-10 mm. 

 long, lavender, rose, or whitish. Brachyactis hyhrida Greene. Mountains: Mont. 

 — Colo. — Nov. — B.C. Submo7it, 



75. A. Hendersonii Fernald. Stem 5-10 dm. high, villous especially above, 

 branched above; leaves thin, ciUate on the margins, more or less short-hairy or 

 in age glabrate; stem-leaves linear-lanceolate, 5-8 cm. long, the lower ones 1-1.5 

 cm. long, narrowed below, ^\ith clasping bases; involucres turbinate, 10-15 mm. 

 broad; bracts linear, subulate, foliaceous, cihate on the margins; hgules blue, 

 12-16 mm. long. Rich meadows; Ida. Submont. Jl-Au. 



76. A. oreganU3 Nutt. Stem slender, branched, 3-6 dm. high, more or less 

 pubescent; branches strongly ascending; leaves linear or lance-Iinear, 5-8 cm. 

 long, entire, 6-8 mm. high, 7-8 mm. broad; bracts lanceolate or lance-hnear, 

 the outer about equalling the inner ones; Iigules purpUsh or white, 7-8 mm. long. 



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