Physaria bellii |
Physaria multiceps |
|
---|---|---|
Bell's or Front Range twinpod, Bell's twinpod, Front Range twinpod |
manyhead bladderpod |
|
Habit | Perennials; caudex simple, (relatively large); densely (silvery) pubescent, trichomes (sessile, appressed), rays furcate, fused at base. | Perennials; caudex (buried), branched, (not thickened); densely pubescent, trichomes (sessile or short-stalked), 5–8-rayed, rays furcate or bifurcate, (umbonate, rough to finely tuberculate throughout). |
Stems | simple from base, decumbent to nearly prostrate, 0.5–1.3 dm. |
several from base, prostrate, (slender, sparsely pubescent), 0.5–2 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 obovate to narrowly elliptic, 1.5–6 cm, margins usually entire, rarely shallowly dentate, (surfaces densely pubescent, often silvery). |
Cauline leaves | blade oblanceolate to broadly obovate, 1–2.5 cm, margins entire. |
blade oblanceolate to spatulate, 0.5–1 cm, margins entire, (surfaces often sparsely pubescent). |
Racemes | dense. |
(narrow), loose, (elongated in fruit). |
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 (greenish brown, sometimes magenta), linear or elliptic, 4.3–6(–7.5) mm, (median pair thickened apically, cucullate); petals (frequently pink or magenta in distal 1/3–1/2), spatulate to oblanceolate, 6–10(–12) mm, (claw undifferentiated from blade). |
Fruiting pedicels | (divaricate-ascending to widely spreading, slightly sigmoid to curved), 7–12 mm. |
(ascending to somewhat spreading, straight to slightly curved), 4–8(–12) 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. |
broadly ovoid to suborbicular, inflated, (terete or, often, slightly angustiseptate), 3–6mm; valves sparsely pubescent; ovules usually 4, rarely 6–8 per ovary; style 3–6.5 mm. |
Seeds | compressed. |
plump. |
2n | = 8. |
|
Physaria bellii |
Physaria multiceps |
|
Phenology | Flowering Mar–Jun(-Jul). | Flowering May–Jul. |
Habitat | Dark shale, road cuts, ridge crests, washes | Douglas-fir or spruce woodlands, limestone ridges, damp open slopes, soil pockets among rocks, crevices of rocks, decomposed calcareous rocks |
Elevation | 1500-1800 m (4900-5900 ft) | 2400-2900 m (7900-9500 ft) |
Distribution |
CO
|
ID; UT; WY |
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.) |
|
Source | FNA vol. 7, p. 628. | FNA vol. 7, p. 651. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella multiceps | |
Name authority | G. A. Mulligan: Canad. J. Bot. 44: 1662, fig. 1, plate 1, fig. 3. (1966) | (Maguire) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) |
Web links |