. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. glabrous, sur-mounted by a papillose ring. Pappus bristles in several series, flattish, barbellate or scabrous.[St. Marys thistle.] A montypic genus of the Mediterranean region. I, Mariana mariana (L.) Hill. ]\IilkThistle. Fig. 4654. Carduus inarianus L. Sp. PI. 823. mariana Hill, Hort. Kew. 61. marianum Gaertn. Fruct. & Scm. 2: Stem striat
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. glabrous, sur-mounted by a papillose ring. Pappus bristles in several series, flattish, barbellate or scabrous.[St. Marys thistle.] A montypic genus of the Mediterranean region. I, Mariana mariana (L.) Hill. ]\IilkThistle. Fig. 4654. Carduus inarianus L. Sp. PI. 823. mariana Hill, Hort. Kew. 61. marianum Gaertn. Fruct. & Scm. 2: Stem striate, glabrous or slightly woolly, littlebranched, 2°-4° high. Leaves oblong-lanceolate,prickly, strongly clasping, the lower often 12long and 6 wide, the upper much smaller, scarce-ly lobed, acute; heads about 2] broad; spines ofthe middle involucral bracts often \l long; pap-pus bristles white, barbellate. Escaped from gardens near Kensington, Ontario(T. Walker, according to Macoun), in ballast andwaste groimds about the eastern seaports, south toAlabama, and on the Pacific Coast from British Co-luml)ia to southern California, where it is Marys-thistle, ladys-niilk, holy thistle. 107. ONOPORDON [Vaill.] L. Sp. PI. 827. 1753. Coarse, branching or rarely acaulescent, tomentose herbs, with stout stems winged bythe decurrent bases of the alternate dentate or pinnatifid, prickly leaves, and large discoidheads of purple violet or white flowers, mostly solitary at the ends of the branches. Invo-lucre nearly globular, its bracts imbricated in many series, all tipped witli long spines in ourspecies, the inner narrower than the outer. Receptacle flat, fleshy, honeycombed, not bristly. 556 COMPOSITAE. Vol. III. Corolla-tube slender, the limb expanded and deeply 5-cleft. Filaments pilose. Anthers sagit-tate at the base. Achenes obovate or oblong, 4-angled or compressed, smooth or bristles in several series, filiform, barbellate or plumose, u
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
