Physaria intermedia |
Physaria floribunda |
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mid-bladderpod |
point-tip twinpod |
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Habit | Perennials; caudex (buried), branched, (thickened with persistent leaf bases, cespitose); densely pubescent (usually grayish-green), trichomes (sessile or short stalked, spreading), several-rayed, rays furcate or bifurcate, slightly fused at base, (tuberculate or finely tuberculate). | Perennials; caudex branched, (cespitose); (silvery) pubescent throughout, trichomes several-rayed, rays mostly furcate, (arms of unequal lengths, finely tuberculate). | ||||
Stems | several from base, erect to decumbent, (unbranched, stout, densely leafy sterile shoots sometimes present), (0.5–)4–2.5 dm. |
several from base, erect or lateral decumbent, (unbranched), 1–2 dm. |
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Basal leaves | (clustered at stem base); blade linear to linear-oblanceolate, 2–5 cm, margins entire, usually involute, sometimes flattened, (apex obtuse to subacute). |
(petiole usually winged); blade broadly oblanceolate, 3–8 cm, margins usually dentate or pinnatifid, rarely subentire, (terminal lobe acute or obtuse, not rounded). |
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Cauline leaves | blade linear-oblanceolate to linear, 1–3.5(–4.5) cm, margins entire, usually involute. |
blade spatulate to linear-oblanceolate, 1–3 cm, margins usually entire, rarely toothed, (apex acute). |
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Racemes | compact, (often nearly subumbellate). |
loose (and greatly elongated in fruit) to congested. |
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Flowers | sepals (yellowish or greenish yellow), ovate or oblong, 4.5–7.5(–9) mm, (lateral pair sometimes cucullate, median pair tapering at both ends, thickened apically, cucullate); petals spatulate or oblong, 6.5–10.5(–15) mm, (base sometimes widened, apex rounded or retuse). |
sepals linear-oblong, 5–7 mm; petals spatulate, 9–11 mm. |
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Fruiting pedicels | (often expanded distally, ascending or recurved, usually straight or slightly curved, rarely nearly sigmoid), 4–15 mm, (stout). |
(recurved), 6–15 mm. |
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Fruits | (sessile or substipitate), subglobose to slightly ovoid, usually inflated, rarely compressed or obcompressed, 4–6(–10) mm, (apex acute, slightly flattened); valves sparsely pubescent, trichomes appressed; ovules (8–)12–16(–20) per ovary; style (2–)3–4.5(–5.5) mm. |
(usually pendent on arching pedicels, less frequently widely divergent), irregular in shape, (base obtuse or slightly cordate, apex deeply and broadly notched), not strongly inflated, 8–11 × 8–12 mm, (papery); valves retaining seeds after dehiscence; replum linear-oblong, constricted, 2.5–4 mm, as wide as or wider than fruit, apex obtuse; ovules 4 per ovary; style 5–8 mm. |
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Seeds | flattened. |
flattened. |
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2n | = 18, 20, 36. |
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Physaria intermedia |
Physaria floribunda |
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Phenology | Flowering Apr–Aug. | |||||
Habitat | Dry sandy, gravelly, or rocky soil, claylike hillsides, open chiprock, dry stream beds, gravel bars, open knolls, open pinyon-juniper woods, open stands of sagebrush, Gambel oak or ponderosa pine communities, calcareous substrates | |||||
Elevation | 1600-2400 m (5200-7900 ft) | |||||
Distribution |
AZ; NM; UT
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CO; NM
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Discussion | N. H. Holmgren (2005b) pointed out that the lectotype and other material from New Mexico, where Physaria intermedia is very infrequent, is quite similar to P. parvula from northern Colorado and northeastern Utah; it is also quite similar to, but less robust than, P. pulvinata from southwestern Colorado. The material from Arizona, northwestern New Mexico, and Utah may represent an unnamed taxon; further study is needed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 7, p. 644. | FNA vol. 7, p. 637. | ||||
Parent taxa | Brassicaceae > tribe Physarieae > Physaria | Brassicaceae > tribe Physarieae > Physaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Lesquerella alpina var. intermedia, Lesquerella intermedia | |||||
Name authority | (S. Watson) O’Kane & Al-Shehbaz: Novon 12: 324. (2002) | Rydberg: Bull. Torrey Bot. Club 28: 279. (1901) | ||||
Web links |