Oxytheca watsonii Torr. & A.Gray ex S.Watson

Watson's oxytheca (en)

Species

Angiosperms > Caryophyllales > Polygonaceae > Oxytheca

Characteristics

Plants erect to spreading, 0.5-2.5 × 0.4-4 dm. Stems glandular throughout. Leaf blades spatulate or obovate to oblanceolate, 0.7-4 × (0.1-)0.5-1.2 cm, strigose adaxially, less so abaxially, sparsely glandular on both surfaces. Inflorescences open to densely branched, 0.5-2 dm; bracts 1-5 × 0.5-3 mm, 3(-5) at first node and linear to ovate, otherwise distinct or basally connate and linear to triangular, ciliate and glandular; awns 1-3 mm. Peduncles deflexed, stout, 0.2-0.5 cm at proximal nodes, sometimes absent. Involucres 1.5-2 mm, typically glabrous, rarely with few scattered hairs abaxially; teeth 4; awns reddish, 2.5-3 mm. Flowers 2-4(-7); perianth white to pink, 1-1.5 mm, strigose and sparsely glandular abaxially; tepals dimorphic, entire, those of outer whorl oval to ovate and strigose abaxially, those of inner elliptic to oval or ovate and glabrous or sometimes pubescent adaxially at base; filaments 1-1.5 mm, glabrous; anthers cream to red, oval, 0.2 mm. Achenes dark brown to maroon, 1-1.5 mm. 2n = 40.
Life form annual
Growth form herb
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Foliage retention deciduous
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Environment

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Usage

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Edible -
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Cultivation

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Distribution

Oxytheca watsonii world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:694885-1
WFO ID wfo-0001100870
COL ID 4BLDX
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Oxytheca watsonii