Physaria purpurea |
Physaria tumulosa |
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rose bladderpod |
Kodachrome bladderpod |
|
Habit | Perennials; caudex simple, (usually woody); densely pubescent, trichomes (sessile or short-stalked), several-rayed, rays simple or furcate, (smooth or tuberculate). | Perennials; caudex (buried), branched, (forming hard mats); densely pubescent, trichomes several-rayed, rays furcate or bifurcate, (tuberculate). |
Stems | simple from base, erect, (unbranched, sparsely leaved), to 7 dm. |
several from base, erect, (unbranched), 0.2–0.3 dm. |
Basal leaves | blade elliptic or obovate to oblong, 4–15 cm, margins entire, dentate, or lyrate-pinnatifid. |
(few), similar to cauline. |
Cauline leaves | (proximal often narrowed to short petiole, distal sessile); blade broadly elliptic to obovate or rhombic, 0.5–3(–5) cm, margins entire. |
(petiole not differentiated from blade); blade (somewhat succulent), linear to narrowly oblanceolate, 5–12 mm, margins entire. |
Racemes | dense or slightly elongated. |
dense, (few-flowered). |
Flowers | sepals elliptic to ovate, 3.5–6(–7) mm, (median pair usually thickened apically, cucullate); petals (white, often purple-veined, fading purplish), suborbicular to obovate, obdeltate, or cuneate, 4.5–10(–12) mm, (often narrowed to broad claw, apex emarginate, less frequently claw undifferentiated from blade). |
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 | (spreading or recurved, loosely sigmoid), 5–25 mm. |
(ascending to divaricate-ascending, ± straight), 3.5–6 mm. |
Fruits | (pendent or horizontal, sessile or substipitate), subglobose to broadly ellipsoid, not or slightly inflated, (4–)5–8 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4–8(–12) per ovary; style 1–3(–4) mm. |
(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. |
flattened. |
2n | = 18, 36. |
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Physaria purpurea |
Physaria tumulosa |
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Phenology | Flowering Mar–Oct. | Flowering May–Jun. |
Habitat | Rocky draws, canyons, stony hills, ridges, rock crevices on limestone ledges, lava cliffs, sand and gravel of dry stream beds, rocky slopes, talus, shade of bushes or cactus clumps | Barren white knolls surrounded by sagebrush, pinyon pine, and Utah juniper |
Elevation | 400-2400 m (1300-7900 ft) | 1600-1800 m (5200-5900 ft) |
Distribution |
AZ; NM; TX; Mexico (Chihuahua, Coahuila, Sonora)
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UT |
Discussion | 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.) |
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Source | FNA vol. 7, p. 659. | FNA vol. 7, p. 664. |
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria |
Sibling taxa | ||
Synonyms | Vesicaria purpurea, Lesquerella purpurea, Lesquerella purpurea subsp. foliosa, Lesquerella purpurea var. foliosa, P. purpurea var. foliosa | Lesquerella hitchcockii subsp. tumulosa, Lesquerella tumulosa, P. rubicundula var. tumulosa |
Name authority | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 327. (2002) | (Barneby) O’Kane & Al-Shehbaz: Novon 12: 328. (2002) |
Web links |