Physaria pycnantha |
Physaria tumulosa |
|
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mountain-view bladderpod |
Kodachrome bladderpod |
|
Habit | Perennials; caudex branched, (densely cespitose and forming hemispheric mounds); densely pubescent, trichomes 5-rayed, rays bifurcate near base, fused at base, (strongly tuberculate throughout). | Perennials; caudex (buried), branched, (forming hard mats); densely pubescent, trichomes several-rayed, rays furcate or bifurcate, (tuberculate). |
Stems | few to several from base, erect, (usually exceeding basal leaves), 0.3–0.7 dm. |
several from base, erect, (unbranched), 0.2–0.3 dm. |
Basal leaves | blade linear-spatulate, 1.5–4 cm, (base narrowed gradually to petiole), margins entire. |
(few), similar to cauline. |
Cauline leaves | blade spatulate, similar to basal. |
(petiole not differentiated from blade); blade (somewhat succulent), linear to narrowly oblanceolate, 5–12 mm, margins entire. |
Racemes | crowded in distal 1/3, (4–10-flowered). |
dense, (few-flowered). |
Flowers | sepals (pale yellow), oblong to elliptic, 3–4 mm, (median pair usually thickened apically, cucullate); petals (sometimes with slight tinge of orange basally), lingulate, 4–6 mm. |
sepals (yellowish), elliptic, 3–4.5 mm; petals (erect or, more commonly, arching), spatulate to oblanceolate, 5.8–7 mm, (claw not or weakly differentiated from blade). |
Fruiting pedicels | (loosely to strongly sigmoid), 6–10 mm. |
(ascending to divaricate-ascending, ± straight), 3.5–6 mm. |
Fruits | ellipsoid, slightly inflated (somewhat latiseptate), 4–5 mm, (apex acute); valves pubescent, trichomes erect, appearing slightly shaggy; ovules 4–8 per ovary; styles 2.5–3 mm, (shorter than mature fruits). |
(coppery or reddish brown in age), broadly ovoid, slightly inflated, 3–4 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8 per ovary; style 1.8–3 mm. |
Seeds | ± flattened, convex on outer side. |
flattened. |
Physaria pycnantha |
Physaria tumulosa |
|
Phenology | Flowering late May–Jun(-Jul). | Flowering May–Jun. |
Habitat | Dry, windswept knolls of limestone gravel, with other cushion-forming plants | Barren white knolls surrounded by sagebrush, pinyon pine, and Utah juniper |
Elevation | 1600-2300 m (5200-7500 ft) | 1600-1800 m (5200-5900 ft) |
Distribution |
ID; MT
|
UT |
Discussion | Physaria pycnantha is morphologically similar to 56. P. nelsonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Physaria tumulosa is morphologically similar to 55. P. navajoensis of northeastern Arizona and northwestern New Mexico, and differing very subtly. It has been long treated as an infraspecific taxon of P. hitchcockii; unpublished molecular data do not support that disposition. It is found on knolls of the Winsor Member of the Carmel Formation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 664. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Lesquerella hitchcockii subsp. tumulosa, Lesquerella tumulosa, P. rubicundula var. tumulosa | |
Name authority | Grady & O’Kane: Novon 17: 188, fig. 5. (2007) | (Barneby) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |