. Key and flora : northern and central states . Botany. WILLOW FAMILY 49 1. S. nigra Marsh. Black Willow. A small tree with very brittle branches. Leaves elliptical or narrowly lanceolate, acute at each end, serrate, short-petioled, downy when young and becoming smooth with age, 2-3 in. long; stipules persistent or deciduous. Staminate catkins 1-2 in. long; the pistillate 2-4 in. long. Stamens 3-7, distinct; filaments soft-hairy below. Capsule twice the length of the pedicel, ovate, taper-pointed, pointed by the prominent style. Along streams and borders of marshes.* 2. S. lucida Muhl. Shining
. Key and flora : northern and central states . Botany. WILLOW FAMILY 49 1. S. nigra Marsh. Black Willow. A small tree with very brittle branches. Leaves elliptical or narrowly lanceolate, acute at each end, serrate, short-petioled, downy when young and becoming smooth with age, 2-3 in. long; stipules persistent or deciduous. Staminate catkins 1-2 in. long; the pistillate 2-4 in. long. Stamens 3-7, distinct; filaments soft-hairy below. Capsule twice the length of the pedicel, ovate, taper-pointed, pointed by the prominent style. Along streams and borders of marshes.* 2. S. lucida Muhl. Shining Willow. A large shrub or some- times a bushy tree 20 ft. high, with smooth bark, yellowish-brown and shining on the twigs. Leaves varying from ovate to lanceolate, usually with very slender tapering points, sharply and finely serrate, firm, green, and glossy on both sides, 3-5 in. long; stip- ules small, oblong, usually persistent. Catkins borne on short leafy branches, the staminate ones stout, 1-1J in. long, the pistil- late ones slender, 1^-2 in. long, lengthening in fruit to 8-4: in. Stamens usually 5. Capsule nar- rowly ovoid or cylindrical, pointed, smooth, and shin- ing. Banks of streams, lakes, and swamps. One of the most beautiful wil- lows .from the showiness of the staminate catkins and the large glossy leaves. 3. S. alba L. White Willow, Yellow Wil- low. A spreading tree 50-80 ft. high, with rough gray bark, yellowish-green on the twigs. Leaves lanceolate, narrowed at the base, with long tapering points, gray or silky-downy on both sides when young, the upper surface (especially in Var. vitellina) becoming smooth when old, 2-4 in. long; stipules ovate-lanceolate, deciduous. Catkins on short leafy branches, the pistillate ones slen- der, cylindrical, 1|-3J in. long! Stamens usually 2. Capsule ovoid, pointed. Cultivated from Europe (especially Var. vitellina), and. Fig. 10. White willow (Salix alba) A, staminate catkin, natural size; B, pistillate catMn, natural size
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1908
