The morphological characteristics of Vallisneria
Morphological characteristics
Valerian herb. Leaves linear, tufted, translucent, striate, 4-10(-20) cm long, middle 2-5 mm wide, veins 7-12(-18). Calyx mostly, as long as 25(-30) cm, 0.5 mm thick, twisted, with 4-5 edges; sheath calyx long 3-5 cm, oblique mouth; inflorescence when nearly spherical, stalk color, Length 3-5 mm, width 4-5 mm; total bracts obovate to nearly rounded, culm culm color, lower half hard, upper half paper, not folded, length 2-2.5 mm, width 1.5-1.8 Millimeters, glabrous or marginal with a few hairs, lower hairs longer; total (flowers) often densely pubescent; sepals obovate to long obovate, 1.7-2.5 mm long, 0.9-1.6 mm wide, abaxially superior and apical White short hairs; male flowers: calyx spathelike, lateral dehiscence, 3-lobed, 1.8-2.5 mm long, abaxially and apically much hairy; corolla lobes 3, nearly conical, a few as large, near the top There are 1 black glands, usually 2 short white hairs at the ends; 6 stamens, anthers black, female flowers: connate, laterally dehiscent, apically 3-lobed, 1.8-2.5 mm long, abaxially and apically short-haired, The outer edge of the gap is hairy, and the length is short; the petals are 3, free, flat and sticky, fleshy, with 1 black gland and some white short hairs at the top, and the hair is easy to fall when the fruit matures. Often villous; chamber 3 ovary, style branches 3, shorter than style. The seeds are round in shape and 0.75-1 mm long. The surface is lined with T-shaped protrusions. Flower and fruit period from July to December.
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