384 Petrak, Die nordamerikanischen Arten der Gattung Cirsium. 
Philad. II, p. 95 (1818). — EIL, Sketch II, p. 272 (1824). — Hook., 
Comp. Bot. Mag. I, p. 48 (1835). — Bigelow, Florul. Bost. ed. 3, 
p. 310 (1840). — Gray in Proc. Amer. Acad. X, p. 40 (1874). — 
Gray, Syn. Fl. North Amer. II, p. 400 (1886). — Watson et Coulter 
in Gray ’s Man. Bot. North U. S. 6. ed. p. 295 (1889). — Coulter. 
Bot. West. Texas in Contrib. U. S. Nat. Herb. II, p. 243 (1891 — 94), 
— Bailey et Collins in Bull. Torr. Bot. Club XX, p. 235 (1893). 
Cirsium megacanthum Nutt. in Trans. Amer. Phil. Soc. VII, 
p. 421 (1840). 
Cirsium horridulum ß. EUioitii Torr, et Gray, Fl. North Amer. 
II, 3, p. 460 (1843). 
Cnicus spinosissimus Britton, Cat. PI. New Jers., p. 151 (1889) 
nec L. Sp. pl. ed. 1, p. 826 (1753). 
Carduus pinetorum Small, Fl. Southeast. U. S., p. 1308 (1903). 
Carduus vittatus Small in Bull. N. Y. Bot. Gard. III, p. 439 
(1903—05). 
Carduus spinosissimus var. Elliottii Baerecke, Anal. Key Atl. 
Sect. Middle Florida, p. 132 (1906). 
Cirsium spinosissimum Robins. et Fernald in Gray's New 
Man. Bot. 7. ed. p. 857 (1908) excl. aut. Scop. nec Scop. Fl. Carniol. 
ed. 2. II. p. 129 (1772). 
Cirsium horridulum ssp. megacephalum Petrak in schedis 
1910—11. 
Cirsium pinetorum Small, Fl. Miami, p. 199, 200 (1913) sec. 
Ind. Americ. 
Cirsium vittatum Small, Fl. Miami, p. 199, 200 (1913) sec. 
Ind. Americ. 
Distributio: In pratis aridis arenosis, in pinetis, pascuis, 
ad vias, secus litora maris in civitatibus orientalibus late dispersum, 
frequens in regionibus australioribus, imprimis in civitatibus 
Carolina, Florida, Louisiana. 
Vidi e locis sequentibus: 
Florida: Eustis, Lake County; high pine land 1. — 15. IV. 
1894, Coli. G. N. Nash Nr. 367 H. B., H. U. W. — In pratis prope 
St. Marks, V— VII 1843 leg. Rugel, H. N. W. — Moist pine barrens 
near Jacksonville 1. V. 1894 Coli. A. H. Curtiss Nr. 4714 H. H. 
— Prairies between the Everglades and Biscayne Bay, Coli. A. H. 
Curtiss Nr. 1589 H. U. W. 
Alabama: Sine loco speciali 25. IV. 1842 Coli. Tewett 
H. N. W. 
Louisiana : New Orleans 1832 Coli. Drummond Nr. 161 
H. N. W. 
Texas: Fayette County Coli. B. Matthes Nr. 96 H. N. W. 
Zur Nomenklatur. 
Walker hat diese Distel in seiner Flora Caroliniana zuerst 
als Carduus spinosissimus beschrieben. Später haben manche 
Autoren, durch diesen Namen irre geführt, das C. horridulum mit 
