Eastern Mojave Vegetation Coll. No. 1718, Polygonum douglasii  


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  Polygonaceae Polygonum douglasii
Scanned 1 January 2018.

Coll. No. 1718, 28 Jul 2017, characters observed: Annual, to 35-40 cm., generally glabrous; Leaves, cauline, alternate, some sort of papery tissue at base of leaf that could be an ocrea, 20 mm. × 1 mm. wide, linear to narrowly lanceolate, adaxial sparsely pitted, margins revolute; Inflorescence, flowers borne singly in axils; Flowers, stipe-like base; Perianth, #5 (looked like 3 outer and 3 inner to me) 2.5 mm. × 1 mm. wide, outer, greenish with pink margins, inner, pink with green mid-vein; Stamens, #8 (I was able to count 6), 1.4 mm.; Filaments, winged below; Ovary, superior, 1 mm. × 0.6 mm. wide; Styles, #3, 0.3 mm.; Stigmas, 1 per style; Fruit, 2.5 mm., black.

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Date and time this page was prepared: 7/13/2024 8:18:54 AM