SUNFLOWER FAMILY 533 
Plants — genres or short-lived perennials with a thick taproot, eee or with stems 
to 1 m. tall; often stout, more ter strongly striate, and hollow ; pubesc sparse to ee 
risp, elonga u s 
os obose, 3-5 cm. lon c 
bres the phyllaries = closely to rather loosely imbricate, the backs glabrous but often more or less 
scabrous, he margins a little crisp- -puberulent; ——— ni tom mentor, scabrous-ciiolat, or smooth, 
riangul Vv hort 
r la a 
lavender-pink oe rose, not curving outward, the corolla 2-3 cm. long, the tu —15 mm. long, the 
throat 5-10 mm. long, the lobes 4-10 mm. long; achenes light brown, 5-7 mm. long, 2-2.5 mm. 
wide, oblongish, a little widened upward; pappus pale brownish buff, 2-3 cm. lon ng. 
y or wet places in mountain meadows, sagebrush-covered valleys, open rancor and subalpine slopes, 
aistiien Canadian, and Hudsonian Zones; 7 Aaa the Cascade-Sierran re —_ to the east in. Washi ngton, 
Or fase and Ca ei i ya pe —— in the — Ranges; witearaad in the ntains and high & ae 
kon Rocky Mow 
tains. Type locality: reraiics vat the Rocky Moun aan ay—Sept. 
The lea e y thistles constitute a Cniyaiorpide postaine in ge of critical study before they can be satisfac- 
torily aligned on either specific or subspecific levels. 
27. Cirsium ipesasi satin ae: Hooker Thistle. Fig. 5928. 
Carduus nae the oe Fl. Bor. Amer. 1: 302. 
Cirsium hookerianum Nutt. Trans. Amer. Phil. se = 7: 418. 1841. 
Pr et a short-lived perennial with a oot ; stems erect, 0.6-1.5(2) m. tall, nearly simple 
or narrowly branched above, thinly a yickmonk neater and sparsely crisp- -pubesce nt. Basal 
5926. Cirsium loncholepis 
5927. Cirsium foliosum 
