Polygonella gracilis
slender wireweed, tall jointweed
erect, simple or branched proximally and distally, glabrous.
mostly fugaceous;
ocrea margins not ciliate;
blade filiform to broadly spatulate or, rarely, obovate, (9–)19–39(–65) × 0.8–5(–8) mm, base attenuate, margins not hyaline, apex obtuse, glabrous.
(13–)20–40(–70) mm;
ocreola encircling rachis, only the base adnate to rachis, apex acute.
spreading in anthesis, sharply reflexed in fruit, 0.1–0.3 mm, as long as subtending ocreola.
functionally unisexual;
filaments dimorphic;
anthers deep red;
styles and stigmas less than 0.1 mm in anthesis.
outer tepals loosely appressed in anthesis and fruit, white, elliptic, 1.1–2 mm in anthesis, margins entire;
inner tepals loosely appressed in anthesis and fruit, white, elliptic, 1–2 mm in anthesis, margins entire.
outer tepals loosely appressed in anthesis, usually spreading in fruit, white to pink, often drying red and streaked or dotted orange or brown, elliptic to oblong, 0.8–1.4 mm in anthesis, margins entire or obscurely erose;
inner tepals loosely appressed in anthesis and fruit, white to pink, often drying yellow, broadly elliptic to ovate, 1.8–3.6 mm in flower, margins entire or obscurely erose.
included or exserted, reddish brown to yellow-brown, (2–)3-gonous, 2–3.4 × 1–1.4 mm, shiny, smooth.
= 22, 24.
WildflowerSearch
iNaturalist
USDA Plants Database
