476 Petrak, Die nordamerikanischen Arten der Gattung Cirsium. 
Capitula in apice caulis et ramorum solitaria, prae. - 
terea in axillis foliorum supremorum capi- 
tula 1 — 3 subabortiva, sessilia vel sub- 
sessilia, ebracteata, basi dilatata, plus minusve ex- 
cavata, ovato-globosa vel globosa, raro ovata, 
cum flosculis 3 — 4 1 / 2 cm longa, 2 */ 2 — 3 cm lata. Involucri par- 
cissime arachnoidei vel glabrescentis f o - 
liola exteriora et media e basi ovato-oblonga 
appressa lineari-lanceolata, apicem versus 
virescentia, dorso subcarinata, spinulis in- 
firm i s stramineis 1 — 3 mm longis terminata, 
paullum supra medium horizontaliter vel 
subrecurvo-patentia, apicem versus iterum 
plus minusve introrsum curvata; interiora gra- 
datim longiora lineari-lanceolata, paullatim 
acuminata sed vix rigida; intima lineari-lanceolata elongato- 
acuminata, apice subscariosa, straminea vel purpurascentia, 
undulato-curvata nec spinosa. Corollae purpureae vel roseae raro 
albidae limbus subregulariter quinquefidus,' laciniis anguste 
linearibus abruptiuscule acuminatis vel subobtusis, a tubo vix 
vel satis distinctus eoque parum brevior vel subaequilongus. 
Filamenta imprimis apicem versus dense sed breviter papilloso- 
pilosa. Pappus sordide albus, setis plumosis apice raro tantum 
scabridis ibique perparum dilatatis. Achaenia matura oblonga 
compressa, brunneo-fusca, nitida, 5 — 6 mm longa, 2 — 2 1 / 2 mm 
lata. Bienne. Floret Maio — J u 1 i o. 
Synonyma: 
Cirsium Californicum Gray in Rep. Expl. Railr. Rout. Miss. 
Pacif. Oc. IV, 5, p. 112 (1856). — Jepson, Fl. West. Middle Calif. 
ed. 1, p. 508 (1901); ed. 2, p. 425 (1911). 
Cnicus Californicus Gray in Proc. Amer. Acad. X, p. 46 
(1874). — Gray in Geol. Surv. Calif. Bot. I, p. 420 (1876). — 
Gray, Syn. Fl. N. Amer. II, p. 408 (1886). 
Carduus neglectus Greene in Bull. Calif. Acad. II, 7, p. 404 
(1887). 
Carduus lilacinus Greene in Bull. Calif. Acad. II, 7, p. 404 
(1887). 
Carduus Californicus Greene in Proc. Acad. Nat. Sei. Philad. 
1892, p. 359 (1893). — Greene, Man. Bot. San Franc. Bay, p. 217 
(1894). — Hall, Comp. South. Calif. in Univ. Calif. Public. Bot. III, 
1, p. 240 (1907). 
Exsiccata: Petrak, Cirsiotheca universa Nr. 42 
Distributio: In pratis montanis aridis, arenosis, lapi- 
dosis vel saxosis Calif orniae centralis et australis dispersum, in 
montibus Sierra Nevada dictis frequens. 
Vidi e locis sequentibus: 
California: Amador and Calaveras Counties : Moke- 
lumne River and immediate tributaries; West Point Bridge 
alt. ca. 680 — 700 m, 7. VII. 1896 Coli. G. Hansen Nr. 1805 H. H. 
— Amador County: New York Falls alt. ca. 450 m, 1. VII. 1895 
