Polanisia jamesii |
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James' clammyweed |
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Habit | Annuals, 15–40(–60) cm. |
Stems | branched; hairs stalked, glandular throughout. |
Leaves | petiole green to purple, angled, (0.2–)0.5–0.8(–1) cm; leaflet blade linear to narrowly elliptic, 1.5–2.8 × 0.1–0.2 cm, margins entire, apex acute, mucronulate, surfaces densely glandular abaxially, sparsely glandular adaxially. |
Racemes | 1–3 cm (6–8 cm in fruit); bracts trifoliate, ovate, 5–15 mm. |
Pedicels | 5–15 mm. |
Flowers | sepals pale yellow, glandular, lanceolate, 1.6–2.6 × 0.8–1.2 mm, margins entire, apex acute to obtuse; petals white, oblong-ovate, clawed, abaxial pair 1.5–3 × 1–2 mm (6 or 7-lobed), apex emarginate to lacerate, adaxial pair 3–5 × 2–3 mm (4 or 5-lobed), apex emarginate to lacerate; nectary glands yellow (drying purple), 0.5–1 mm; stamens 6–9, slightly exserted, yellow, 3.2–5.2 mm; anthers yellow, 0.5–1 mm; gynophore 2–4 mm in fruit; ovary 2.5–5(–7) mm; style persistent in fruit, 2.5–4.5 mm; stigma red. |
Capsules | 8–30 × 2–4 mm, reticulate, glandular. |
Seeds | 18–36, bright reddish brown, globose to oblong, 1.8–2 mm, pebbled (without transverse ridges). |
2n | = 20. |
Polanisia jamesii |
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Phenology | Flowering summer–early fall. |
Habitat | Sandy soil, often in blowouts in prairies and stabilized dunes |
Elevation | 200-1400 m (700-4600 ft) |
Distribution |
CO; IA; IL; IN; MN; NE; NM; OH; OK; SD; TX; WI
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Discussion | Of conservation concern. Populations of Polanisia jamesii in Indiana and Ohio are adventive. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 203. |
Parent taxa | Cleomaceae > Polanisia |
Sibling taxa | |
Synonyms | Cristatella jamesii |
Name authority | (Torrey & A. Gray) H. H. Iltis: Brittonia 10: 54. (1958) |
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