. Flowers of the field. Botany. 162 COROLLIFLOR/R bent back ; stem winged by the thorny leaves. A very handsome plant, about 2 feet high, with a furrowed cottony stem, deeply lobed thorny leaves, which are downy on the veins beneath, and large deep purple flowers, to which the radiated involucre is a very ornamental appendage. This is sometimes called the Scotch Thistle, but incorrectly. The upper part of the flower-stalk is nearly bare of leaves, and the flower itself has a powerful odour. Waste places ; common.—Fl. June to August. Biennial. 2. C. acanthoides (Welted Thistle).—Heads clustered
. Flowers of the field. Botany. 162 COROLLIFLOR/R bent back ; stem winged by the thorny leaves. A very handsome plant, about 2 feet high, with a furrowed cottony stem, deeply lobed thorny leaves, which are downy on the veins beneath, and large deep purple flowers, to which the radiated involucre is a very ornamental appendage. This is sometimes called the Scotch Thistle, but incorrectly. The upper part of the flower-stalk is nearly bare of leaves, and the flower itself has a powerful odour. Waste places ; common.—Fl. June to August. Biennial. 2. C. acanthoides (Welted Thistle).—Heads clustered, round; scales of the invohicre lined, thorny, spreading, or erect; stem winged by the thorny leaves. A branched, very thorny plant, 3-4 feet high, with small heads, of deep purple or sometimes white, flowers. Waste places ; common.—Fl. June, July. Annual. 3. C. tenuiflorus (Slender-flowered Thistle).—Heads clustered, cylindrical; scales of the invohicre thorny, erect; stem winged by the thorny leaves, which are cottony beneath. Well distinguished by the small heads of pink flowers, and the very long erect scales of the involucre. The stems are 2-4 feet high, and bear all the flowers at the summit. Waste places, especially near the sea.—• Fl. June to August. Biennial. 4. C. Marianus (Milk Thistle) is a stouter plant than either of the preceding, and is distinguished at once T)y the white veins on its leaves, from which it derives its popular name. It grows in waste places, is not indigenous, neither is it common.—Fl. June, July. Biennial 18. Cnicus {Plume-thistle) I. C. lanceolatus (Spear Plume-thistle).^/fert(fe mostly solitary, sometimes 2 or 3 together, stalked, egg-shkped ; scales of the in- volucre thorny, spreading, woolly; stem winged by the thorny leaves, the lobes of which are 2-cleft. This is more like the Cotton - thistle {Onopordimn) than any other species of this genus. It grows 3~5 feet high ; the leaves are downy beneath, and the heads of flowers,
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908
