Physaria bellii |
Physaria hemiphysaria |
|||||
---|---|---|---|---|---|---|
Bell's or Front Range twinpod, Bell's twinpod, Front Range twinpod |
intermountain bladderpod, skyline bladderpod |
|||||
Habit | Perennials; caudex simple, (relatively large); densely (silvery) pubescent, trichomes (sessile, appressed), rays furcate, fused at base. | Perennials; caudex simple or branched (tightly); sparsely to densely pubescent, trichomes (sessile or short-stalked), 4–6-rayed, rays furcate or bifurcate, distinct or slightly fused at base, (sometimes umbonate, tuberculate throughout). | ||||
Stems | simple from base, decumbent to nearly prostrate, 0.5–1.3 dm. |
few to several from base, decumbent, 0.5–1(–2) dm, (rather stout, sparsely pubescent). |
||||
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 suborbicular, 1.5–3.5(–5.5) cm, margins entire or shallowly dentate (at base, surfaces densely pubescent, silvery). |
||||
Cauline leaves | blade oblanceolate to broadly obovate, 1–2.5 cm, margins entire. |
(petiolate or distal nearly sessile); blade elliptic to obovate, 0.5–1.5 cm, margins entire. |
||||
Racemes | dense. |
dense, congested, (few-flowered). |
||||
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 lanceolate, oblanceolate, or narrowly elliptic, 3.8–5 mm, (median pair thickened apically, cucullate); petals narrowly lanceolate to linear, 6–10(–13) mm. |
||||
Fruiting pedicels | (divaricate-ascending to widely spreading, slightly sigmoid to curved), 7–12 mm. |
(spreading or recurved, sometimes loosely sigmoid), 2–6.5 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), broadly obcordate, obdeltate, or obcompressed, slightly compressed (angustiseptate), 3–5(–7) mm; valves (not retaining seeds after dehiscence), sparsely pubescent or glabrous, trichomes appressed; replum as wide as or wider than fruit; ovules 8–16 per ovary; style (1.8–)3–6(–7) mm. |
||||
Seeds | compressed. |
slightly flattened, (ellipsoid to suborbicular). |
||||
2n | = 8. |
|||||
Physaria bellii |
Physaria hemiphysaria |
|||||
Phenology | Flowering Mar–Jun(-Jul). | |||||
Habitat | Dark shale, road cuts, ridge crests, washes | |||||
Elevation | 1500-1800 m (4900-5900 ft) | |||||
Distribution |
CO
|
UT |
||||
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.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 7, p. 628. | FNA vol. 7, p. 642. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella hemiphysaria | |||||
Name authority | G. A. Mulligan: Canad. J. Bot. 44: 1662, fig. 1, plate 1, fig. 3. (1966) | (Maguire) O’Kane & Al-Shehbaz: Novon 12: 323. (2002) | ||||
Web links |