Physaria engelmannii

(A. Gray) O’Kane & Al-Shehbaz

Novon 12: 322. 2002.

Common names: Engelmann’s bladderpod
Basionym: Vesicaria engelmannii A. Gray Gen. Amer. Bor. 1: 162, plate 70. 1848
Synonyms: Alyssum engelmannii (A. Gray) Kuntze Lesquerella engelmannii (A. Gray) S. Watson Vesicaria engelmannii var. elatior A. Gray Vesicaria pulchella
Treatment appears in FNA Volume 7. Treatment on page 635. Mentioned on page 620.

Perennials; caudex simple or branched, (woody, aerial); densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays simple or furcate, distinct or fused at base, (asymmetrical with deep notch on one side, often with a U-shaped gap between 2 of the rays, umbonate, strongly tuberculate). Stems few to several from base, erect, (usually unbranched), (1.5–)2.5–4(–6) dm. Basal leaves: blade elliptic to obovate, 2–6.5 cm, margins entire, sinuate, or remotely toothed, (surfaces occasionally sparsely pubescent). Cauline leaves: (proximal often petiolate, distal sessile or subsessile); blade oblanceolate to linear, 1–4 cm, margins entire. Racemes dense, (subumbellate). Fruiting pedicels (ascending), relatively short. Flowers: sepals ovate or elliptic, 5.5–10 mm, (median pair thickened apically, cucullate); petals (bright yellow), obovate to elliptic, 8–14 mm, (sometimes with distinct claw, often retuse). Fruits (shortly stipitate), ± globose or ellipsoid, not or slightly inflated, 5–8 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules (8–)12–20 per ovary; style 3.5–5 mm. Seeds flattened. 2n = 12, 24, 36.

Phenology: Flowering Apr–May.
Habitat: Limestone prairies, rocky ridges, pebbly shores, thin caliche soils, limestone outcrops
Elevation: 150-400 m


Selected References


Lower Taxa

... more about "Physaria engelmannii"
Steve L. O’Kane Jr. +
(A. Gray) O’Kane & Al-Shehbaz +
Vesicaria engelmannii +
Engelmann’s bladderpod +
Okla. +  and Tex. +
150-400 m +
Limestone prairies, rocky ridges, pebbly shores, thin caliche soils, limestone outcrops +
Flowering Apr–May. +
Alyssum engelmannii +, Lesquerella engelmannii +, Vesicaria engelmannii var. elatior +  and Vesicaria pulchella +
Physaria engelmannii +
Physaria +
species +