Polygonella myriophylla (Small) Horton

Small's jointweed (en)

Species

Angiosperms > Caryophyllales > Polygonaceae > Polygonella

Characteristics

Subshrubs, perennial, synoecious, 2-20 dm. Stems prostrate, creep-ing, usually with branches that form dense mats, glabrous. Leaves persistent; ocrea margins not ciliate; blade clavate to spatulate, (1.5-)2-8(-8.5) × 0.4-0.9 mm, base attenuate, margins not hyaline, apex obtuse, glabrous. Inflorescences 5-9(-13) mm; ocreola encircling rachis, only the base adnate to rachis, apex acute. Pedicels spreading in anthesis, spreading the reflexed in fruit, 0.7-1.9 mm, much longer than subtending ocreola. Flowers bisexual; outer tepals loosely appressed in anthesis, sometimes spreading in fruit, white, pink or yellow, often drying yellow, elliptic to oblong, 1.4-2.2 mm in anthesis, margins entire; inner tepals loosely appressed in anthesis and fruit, white, pink, or yellow, elliptic to suborbiculate, 1.7-2.5 mm in anthesis, margins entire; filaments dimorphic; anthers pink or yellow; styles and stigmas 0.4-0.9 mm in anthesis. Achenes mostly included, reddish brown, 3-gonous, 2.2-3.4 × 1.6-2.4 mm, dull to shiny, minutely roughened. 2n = 36.
Life form perennial
Growth form subshrub
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
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Mature height (meter) 0.2 - 2.0
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Environment

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Usage

Uses -
Edible -
Therapeutic use -
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Animal toxicity -

Cultivation

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Images

Polygonella myriophylla unspecified picture

Distribution

Polygonella myriophylla world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:206004-2
WFO ID wfo-0001101008
COL ID 4L8WS
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polygonella myriophylla