Physaria newberryi |
Physaria pycnantha |
|||||
---|---|---|---|---|---|---|
Newberry twinpod, Newberry's twinpod |
mountain-view bladderpod |
|||||
Habit | Perennials; caudex simple or branched, (branches often covered with persistent leaf bases, cespitose); densely (silvery) pubescent, trichomes rays fused at least 1/2 their length. | Perennials; caudex branched, (densely cespitose and forming hemispheric mounds); densely pubescent, trichomes 5-rayed, rays bifurcate near base, fused at base, (strongly tuberculate throughout). | ||||
Stems | several from base, ascending to erect (arising laterally, unbranched), 0.5–1(–2.5) dm. |
few to several from base, erect, (usually exceeding basal leaves), 0.3–0.7 dm. |
||||
Basal leaves | (ascending to erect, petiole slender); blade oblanceolate to obovate, 3–8 cm, (base tapering to petiole), margins incised or dentate with broad teeth, (apex acute to obtuse). |
blade linear-spatulate, 1.5–4 cm, (base narrowed gradually to petiole), margins entire. |
||||
Cauline leaves | blade linear-oblanceolate to oblanceolate, 1–2 cm, margins entire. |
blade spatulate, similar to basal. |
||||
Racemes | dense (elongated or not in fruit, 2.5–8.5(–10) cm). |
crowded in distal 1/3, (4–10-flowered). |
||||
Flowers | sepals (greenish yellow), lanceolate, 6–8.5 mm, (saccate and cucullate); petals spatulate to narrowly oblanceolate, 7–10(–12) mm. |
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. |
||||
Fruiting pedicels | (divaricate, straight), 5–11(–15) mm, (rigid, fruits not pendent on arching pedicels). |
(loosely to strongly sigmoid), 6–10 mm. |
||||
Fruits | didymous, sides curved and angular, highly inflated, 6–16 × 8–12 mm, (papery, apical sinus broad and concave); valves (retaining seeds after dehiscence, distinctly 2-keeled on side away from replum), pubescent, trichomes appressed; replum linear to linear-lanceolate, as wide as or wider than fruit, apex acute; ovules 4–8 per ovary; style 2–9 mm, (usually not exceeding sinus). |
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). |
||||
Seeds | slightly flattened, (ovate). |
± flattened, convex on outer side. |
||||
Physaria newberryi |
Physaria pycnantha |
|||||
Phenology | Flowering late May–Jun(-Jul). | |||||
Habitat | Dry, windswept knolls of limestone gravel, with other cushion-forming plants | |||||
Elevation | 1600-2300 m (5200-7500 ft) | |||||
Distribution |
AZ; NM; NV; UT
|
ID; MT
|
||||
Discussion | Subspecies 2 (2 in the flora). Physaria newberryi, with its unusual fruits, can be confused with 15. P. chambersii. In P. chambersii, the sides of the fruit are flat, the style always exceeds the top, or shoulders, of the fruit, and shoulders form an angle that does not curve in toward the style. In P. newberryi, the sides of the fruit are concave, the styles are shorter than shoulders of the silicle (except in subsp. yesicola), and shoulders of the silicle form a curved, inward arching crown on the fruit. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Physaria pycnantha is morphologically similar to 56. P. nelsonii. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||
Key |
|
|||||
Source | FNA vol. 7, p. 652. | FNA vol. 7, p. 659. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | P. didymocarpa var. newberryi | |||||
Name authority | A. Gray: in J. C. Ives, Rep. Colorado R. 4: 6. (1861) | Grady & O’Kane: Novon 17: 188, fig. 5. (2007) | ||||
Web links |