Physaria angustifolia |
Physaria brassicoides |
|
---|---|---|
threadleaf bladderpod |
double bladderpod, double twinpod |
|
Habit | Annuals; with a fine taproot; ± densely pubescent, trichomes several-rayed, rays distinct or fused at base, bifurcate, (prominently tuberculate throughout). | Perennials; (somewhat compact); caudex branched, (relatively large); (silvery) pubescent throughout, trichomes (sessile), several-rayed, rays furcate, (slightly umbonate, tuberculate throughout). |
Stems | simple or few to several from base, erect, (sometimes branched), to 4 dm. |
several from base, decumbent to ascending (arising laterally, unbranched, stout), (0.2–)0.5–1.7 dm. |
Basal leaves | blade elliptic to rhombic, 3–8 cm, (base narrowing gradually to petiole), margins entire, repand, coarsely toothed, or pinnatifid. |
(petiole somewhat winged); blades orbicular to obovate, 2–6 cm (width 1–2.5 cm, thick), margins usually repand, rarely entire, (adaxial surface scurfy). |
Cauline leaves | (proximal often shortly petiolate, distal sessile); blade linear or narrowly obovate, 1.5–6(–10) cm, margins entire, repand, or shallowly toothed. |
blade oblanceolate to broadly spatulate, 1–2 cm (width 3–5 mm), margins entire, (apex obtuse to subacute). |
Racemes | usually loose. |
moderately dense (or elongated). |
Flowers | sepals elliptic or ovate, 4–6 mm, (lateral pair usually subsaccate); petals obovate to obdeltate, 6–10 mm, (apex often emarginate). |
sepals linear-oblong, 6–8 mm; petals spatulate, 9–12 mm. |
Fruiting pedicels | (usually divaricate, sometimes horizontal, straight or slightly curved), 8–20 mm. |
(divergent, straight to somewhat curved or sigmoid), 5–12 mm. |
Fruits | not didymous, ± globose, slightly inflated, 4–6 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4 per ovary; style 2–3.5 mm; (stigma expanded). |
(erect), didymous, cordate, moderately inflated, (6–)10–20 × 10–23 mm, (papery, base obtuse or with obscure sinus, apical sinus deep, broad); valves (retaining seeds after dehiscence), densely and loosely pubescent, trichomes spreading; replum linear-oblong, constricted, as wide as or wider than fruit; ovules 4 per ovary; style 4–5(–9) mm. |
Seeds | flattened, (margined). |
plump, (broad). |
2n | = 10. |
= 8, 16. |
Physaria angustifolia |
Physaria brassicoides |
|
Phenology | Flowering Apr(-May). | Flowering May–Jun. |
Habitat | Shallow limestone-derived soils, sometimes spreading to disturbed sites | Bare hillsides, dry gravel and clay soil, badlands, clay knolls, banks |
Elevation | 90-300 m (300-1000 ft) | 900-1400 m (3000-4600 ft) |
Distribution |
OK; TX |
CO; MT; ND; NE; SD; WY
|
Source | FNA vol. 7, p. 625. | FNA vol. 7, p. 628. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Vesicaria angustifolia, Lesquerella angustifolia, Lesquerella longifolia | |
Name authority | (Nuttall ex Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) | Rydberg: Bull. Torrey Bot. Club 29: 237. (1902) |
Web links |