. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 1. X. spiN6snM L. Hoary-pubescent, armed at the axils with triple spines; stems slender; leaves lanceolate or ovate- lauceolate, short-petiolate, white-downy beneath, often 2-3-lobed or -cut; fruit about 1 cm. long, with a single short beak or beakless. â Waste places. Me. to Ont., westw. and southw. (Nat. from Trop. Am.) Fig. 085. 2. X. canadfinse Mill. Leaves broadly ovate, cordate, usually 3-lobed and simply or doubly dentate ; burs gla- brou
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 1. X. spiN6snM L. Hoary-pubescent, armed at the axils with triple spines; stems slender; leaves lanceolate or ovate- lauceolate, short-petiolate, white-downy beneath, often 2-3-lobed or -cut; fruit about 1 cm. long, with a single short beak or beakless. â Waste places. Me. to Ont., westw. and southw. (Nat. from Trop. Am.) Fig. 085. 2. X. canadfinse Mill. Leaves broadly ovate, cordate, usually 3-lobed and simply or doubly dentate ; burs gla- brous or merely granular- or glandular-puberulent; the body fusiform-ellipsoid, 14-17 mm. long, 5-8 mm. in diameter; the bealcs usually 2, straight or but slightly curved; prickles scat- tered, straight-tipped or hooked. (X. pensylvanicum Wallr. ? ; X. pungens Wallr. ; X. glabraiumBTitton.) â liich soil, especially in moist places. Tig. 986. x. cajmdense. 986. 3. X. commune Britten. Similar in habit and foliage ; beaks of the bur more or less strongly incurved, usually hooked at the smnmit; prickles numerous, crowded, 3-6 mm. long, hooked at the sumniit, hairy as is the body. â Similar situations. Tig. 987. 4. X. specibsum Kearney. Of the same habit, foliage, etc. ; btir with numerous long (8-10 mm.) filiform usually stramineous and very hairy prickles; beaks moderately incurved and hooked. â Waste places and low moist gi-ound, Tenn. to N. ])ak. and Tex.; also sparingly adventive on â wool- waste, etc., eastw. Fig. 088. 5. X. infl^xum Mackenzie & Bush. Habit, foliage, etc., as in the three preceding species; bur large, the body 2 cm. long, C-7 mm. thick, ovoid-fusiform, merely granular-puberulent ; beaks 2, very strongly incurved, often forming a loop or arch over the fruit; prickles numerous but less crowded than in the preceding, firm in texture, brownish, arcu- ate, hooked at the summit, granular-puberulent, at least toward the base.âBottom lands, Courtney, Mo. (Bush).
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