Physaria newberryi |
Physaria cordiformis |
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Newberry twinpod, Newberry's twinpod |
Wassuk Range bladderpod |
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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 simple or branched; densely pubescent, trichomes (short-stalked), several-rayed, rays furcate or bifurcate, (sometimes slightly umbonate, prominently tuberculate). | ||||
Stems | several from base, ascending to erect (arising laterally, unbranched), 0.5–1(–2.5) dm. |
simple or few from base, prostrate to decumbent (arising laterally from a tuft of leaves, unbranched), 0.5–1.5 dm. |
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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 suborbicular, deltate to rhombic, or elliptic, margins entire or sparsely dentate, 2–4(–6) cm. |
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Cauline leaves | blade linear-oblanceolate to oblanceolate, 1–2 cm, margins entire. |
(shortly petiolate); blade oblanceolate to linear, 1–2(–3) cm, margins entire. |
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Racemes | dense (elongated or not in fruit, 2.5–8.5(–10) cm). |
loose, (sometimes elongated). |
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Flowers | sepals (greenish yellow), lanceolate, 6–8.5 mm, (saccate and cucullate); petals spatulate to narrowly oblanceolate, 7–10(–12) mm. |
sepals lanceolate, 3.5–6(–8) mm; petals obovate to oblanceolate, (5–)7–8.5(–10) mm. |
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Fruiting pedicels | (divaricate, straight), 5–11(–15) mm, (rigid, fruits not pendent on arching pedicels). |
(sigmoid), 5–10 mm. |
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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). |
obcordate to truncate or obcompressed, slightly compressed (angustiseptate, inflated at lobe tips), 3–6mm (wider than long); valves densely pubescent, trichomes appressed or slightly spreading; (septum usually fenestrate); ovules 4–8 per ovary; style (slender), 3–6.5 mm, (often pubescent). |
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Seeds | slightly flattened, (ovate). |
flattened. |
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2n | = 10. |
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Physaria newberryi |
Physaria cordiformis |
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Phenology | Flowering May–Aug. | |||||
Habitat | Dry sandy or gravelly soils, sagebrush, pinyon-juniper, and juniper communities, steep hillsides, rocky ridges, talus, whitish clay hills | |||||
Elevation | 1500-2700 m (4900-8900 ft) | |||||
Distribution |
AZ; NM; NV; UT
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CA; ID; NV; UT |
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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.) |
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Key |
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Source | FNA vol. 7, p. 652. | FNA vol. 7, p. 632. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | P. didymocarpa var. newberryi | Lesquerella cordiformis, Lesquerella kingii var. cordiformis, Lesquerella kingii var. nevadensis | ||||
Name authority | A. Gray: in J. C. Ives, Rep. Colorado R. 4: 6. (1861) | Rollins: Contr. Gray Herb. 171: 47. (1950) | ||||
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