Physaria bellii |
Physaria valida |
|
---|---|---|
Bell's or Front Range twinpod, Bell's twinpod, Front Range twinpod |
strong bladderpod |
|
Habit | Perennials; caudex simple, (relatively large); densely (silvery) pubescent, trichomes (sessile, appressed), rays furcate, fused at base. | Perennials; caudex branched, (thickened); densely pubescent, trichomes (sessile), several-rayed, rays furcate or bifurcate, usually fused toward base, (strongly tuberculate). |
Stems | simple from base, decumbent to nearly prostrate, 0.5–1.3 dm. |
several from base, erect or outer decumbent, (unbranched), to 2 dm. |
Basal leaves | (strongly rosulate; shortly petiolate); blade broadly obovate, 1.5–7.5 (width 7.5–26 mm, base gradually tapering to petiole), margins shallowly dentate, (apex obtuse). |
blade elliptic to lanceolate or obovate, 3–8 cm, margins entire. |
Cauline leaves | blade oblanceolate to broadly obovate, 1–2.5 cm, margins entire. |
(proximal shortly petiolate or sessile, distal sessile); blade elliptic or obovate, to 2 cm, margins entire. |
Racemes | dense. |
dense. |
Flowers | sepals (pale yellow or yellow-green), narrowly lanceolate to narrowly deltate, 4–8 mm; petals yellow, broadly spatulate to obovate, 9–13 mm, (not clawed). |
sepals narrowly elliptic or oblong, 4.5–5.3 mm, (tapering to the somewhat thickened, cucullate apex, lateral pair subsaccate); petals (bright yellow), lingulate or broadly obovate, 7.5–8.5 mm, (narrowing to broad claw, joining in an arch, margins lacerate). |
Fruiting pedicels | (divaricate-ascending to widely spreading, slightly sigmoid to curved), 7–12 mm. |
(divaricate-ascending to horizontal, straight to loosely curved), to 15 mm. |
Fruits | didymous, slightly flattened (contrary to replum) to uncompressed, 4–9 × 2–8 mm, (strongly coriaceous, apical and basal sinuses narrow, deep); valves (retaining seeds after dehiscence), pubescent, trichomes appressed; replum narrowly oblanceolate to narrowly linear-oblong, as wide as or wider than fruit, apex obtuse; ovules 4 per ovary; style more than 3 mm. |
(sessile or substipitate), suborbicular to broadly ovate or ellipsoid, slightly compressed, 6–8 mm; valves pubescent; ovules 12–22 per ovary; style 2–3 mm. |
Seeds | compressed. |
flattened. |
2n | = 8. |
= 10. |
Physaria bellii |
Physaria valida |
|
Phenology | Flowering Mar–Jun(-Jul). | Flowering Apr–May. |
Habitat | Dark shale, road cuts, ridge crests, washes | Limestone soils, steep slopes, roadcuts, open woods |
Elevation | 1500-1800 m (4900-5900 ft) | 1900-2200 m (6200-7200 ft) |
Distribution |
CO
|
NM; TX |
Discussion | Of conservation concern. Physaria bellii is often found in shale and limestone soils of the Fountain/Ingleside, Lykins, Niobrara, and Pierre formations. It is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Physaria valida is known from the Sacramento and White mountains of south central New Mexico, and southward through the Guadalupe Mountains to Hudspeth County, Texas. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 628. | FNA vol. 7, p. 664. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella valida, Lesquerella lepidota | |
Name authority | G. A. Mulligan: Canad. J. Bot. 44: 1662, fig. 1, plate 1, fig. 3. (1966) | (Greene) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |