520 COMPOSITAE 
sibly the outer and inner) with a conspicuous, linear or oblongish, glandular area, the marginal area 
on the backs of the phyllaries scabrous-papillate, the ma rgins minutely ciliolate, the outer and middle 
phyllaries ovati o lanceolate, the attenuate into taceous-spinulose tip; corollas 
ochrol becoming sordid-brownish, the tube 9-11 mm. long, the throat 6-8 mm long, the lobes 
enes brown, narrowly obovate, compressed, 5-6 mm. long ; pappus sordid-whitish, 
1.5-2 cm. lon 
Dry, grassy and rocky slopes, Arid Transition Zone; 1 Oregon and possibly in adjacent norther 
California. Bhd gg locality: pels hillsides near Ashland, Naikaeh Canty: Oregon. The type of C, botrys cs Taboled 
by ms ne e from Montague, Siskiyou County, California, but it, too, may have been collected in southern 
saith une-Aug. 
e mountains between Ashland and Klamath Falls, C. ci/iolatum intergrades with C. cym 
stellar = “appearance = ene of these intergrades occur occasionally in the range of C. om oaane | in x ee North 
Coast Ranges in Calif 
6. aay ee DC. Douglas or Swamp Thistle. Fig. 5907. 
Cirsium douglasit DC. d. 6: 6 1837. 
Carduus undulatus var. Seok i sk Proc. Acad. Phila. ee 360. 1893. 
Cirsium Sees var. wrangelii Petrak, Beih. Bot. Centralbl. 35: 461. 1917. 
Plants monocarpic, often developing a large basal rosette at the top of the stout taproot; stems 
erect, to about 1.5 m. tall, w ethic branched from near the base or above, mostly stout and hollow, 
i in 
what floccose. Ro ; 
the divisions deltoid or ov ovatish, or often oblongish to oboy and more or less deeoty 2-parted, the 
with a broa 
auriculate or semi-amplexicaul base, the auriculate lobes very spiny, generally a little decurrent as 
short spiny wings ; uppermost leaves much reduce ed, closely subtending 28 heads ; heads small to 
medium, (2)2.5-3.5 cm. long and a og as waite. rather numerous in loose to dense ear ae at the 
ends of short branches; involucres short-campanulate or bowl-sha ae sparsely a oid or 
glabrous except for sparse floccose toment long the margins of the phy aries ~ phyllaries 
numerous, plosey Sage and imbricate except at the ibe adink some tip, t outer ovatish, 
-oblong (0) 
c 
Waciasen. ark, dorsal, ‘ondanlar area below the slender rail spa the inner attenuate into 
a more arta s 
pore red, the corollas 1.8-2.1 cm. long, the tube mm, lo ac 
long ; — -tips aaa acute or deg ey ate; achenes br Acta or Reon hii 
plump, berate wean e, 4-5 mm. long, 2-2.5 mm. wide; pappus light brown, 1.5-2 sees. 
marshy yaa on sear pee and in canyons and valleys, Humid one : Ses Cs t Ra anges 
_ central ‘Galifors ia from Mendocino County to Monterey County. Type locality: oe lifornia. Collected hy Doug 
May. On the Sonoma County ate C, douglasti hybridizes with C. quer sie 
ee Moustkstt var. canéscens (P. ) J. T. Howell, aoneete West. Bet, 1959. (Cnicus present 
A. Gray, Proc. Amer. Acad. 10: 43. 1874: Tike sium breweri Jepso he S Mid. Calif, 507. 1901; C. brewert 
var. canescens Petrak, Beih. Bot. Centralbl. 35: 462. 1917; Ries lanosissimum Pe trak, loc. “a as to 
first-cited specimen.) Stems generally taller, to 2. stn pen leaves sanatiy ‘a spiny. a ith the decurrent bases 
cauli heads gener. mall, 2-3 cm et plac 
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chiefly in the Arid Transition_Zone; mountains “a pattem California southwar . = the — ant pa the 
vicinity os peg Lake, Lake County; also from Lake County, Oregon, southward to the Sierra Nevad the 
vicinity of Lak e Ta hoe, California, — adjacent Nevada. Type york Sisson  hocot Shasta City), Siskiyou 
County, Califo: aa lectot type, Eastwood 1199. The vicini ity of Sisson (“Strawberry Valley’) is also the type 
locality of Cnicus bremert June— 
7. Cirsium hydrophilum (Greene) Jepson. Suisun Thistle. Fig. 5908. 
cee tas oan Greene, Proc. Acad. Phila. 1892: — 1893. 
m Jepson, Fl. W. Mid. Calif. 507. 
Cirsium easeyi var. hydvophilum Jepson, Man. FI. Pl. noe 1165.°1925. 
Plant biennial, the stems stout and succulent, to 2 m. tall, thinly — tomentose and aey 
glabrate. Earliest leaves narrowly siliptic-oblong, subentire, undulate, o sha Ilo wly to rather 
i riangular lobes, the margin v 
ing quite la up t .9 dm. € 
arachnoid and glabrate above, thinly white-arachnoid-tom entose below , elongate-oblanceolate, 
deeply pinnately parted or divided, the divisions ovatish and again lobed or parted, the segments 
ending in a short stiff spine and the margins eit tending to ae stl ciliate, the blade 
gradually narrow ow to a spiny-margined, petiole-like base; caatine eaves much smaller, 
becoming broadly sessile and shortly decurrent, frequently developing an enlarged, auriculate, semi- 
amplexicau e, the auricles rounded and r adi iately aghinnn: deatate or -lobed; uppermost leaves 
along the flowering branchlets and sabtending the heads ogee 3 reduced and si ometim es bract- 
: so 
stly 2. cm. long, cylindric-campanulate; involucre s Sil aaieanniate or urce olate-cam- 
c 
hort sto 
acute tips, all evenly and minutely scumslose ciate Sateaely lavender-rose; co hat 
spreading in the need the tube 8-10 mm en ne, t the throat 5-6 mm. long, the lol mm. long; 
achenes p Sane oblong-cuneate, about 2s g, dar ‘g gray-brown or almost shack somewhat 
shining ; pappus sordid-whitish, 1.5 cm. 
