Manual of the Botany of the Northern United States

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G. P. Putnam, 1856 - Botany - 739 pages
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Page 88 - ... vexillum or standard, larger than the others and enclosing them in the bud, usually turned backward or spreading ; the two lateral ones...
Page 405 - ... 2-lobed : radicle short, superior. Petals sometimes present in the fertile flowers. — A small family of important trees, consisting chiefly of the two following genera. 1.
Page 5 - Hairy, rather low : involucres sessile ; the primary ones 3-leaved, bearing a naked peduncle, and soon a pair of branches or peduncles with a 2-leaved involucre at the middle, which branch similarly in turn ; their leaves broadly wedge-shaped, 3-cleft, cut and toothed : radical leaves 5 to 7-parted or cleft : sepals 5, obovate, white : carpels orbicular.

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