All Floras      Advanced Search
FNA Vol. 7 Page 201, 203 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Cleomaceae | Polanisia

2. Polanisia jamesii (Torrey & A. Gray) H. H. Iltis, Brittonia. 10: 54. 1958.

James’s clammyweed James’s clammyweed

Cristatella jamesii Torrey & A. Gray, Fl. N. Amer. 1: 124. 1838

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.

Flowering summer-early fall. Sandy soil, often in blowouts in prairies and stabilized dunes; of conservation concern; 200-1400 m; Colo., Ill., Ind., Iowa, Minn., Nebr., N.Mex., Ohio, Okla., S.Dak., Tex., Wis.

Populations of Polanisia jamesii in Indiana and Ohio are adventive.


 

Related Objects  
  • Distribution Map
  • Map

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |