Physaria lindheimeri |
Physaria fremontii |
|
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Lindheimer's bladderpod |
Fremont's bladderpod |
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Habit | Annuals or biennials; with a fine taproot; densely pubescent, trichomes (sessile or short-stalked), 4–7-rayed, rays usually furcate at base, sometimes bifurcate, (rough-tuberculate throughout). | Perennials; caudex simple; densely pubescent, trichomes (subsessile), 5–7-rayed, rays distinct or slightly fused at base, usually furcate, (roughly tuberculate). |
Stems | several from base, erect or outer decumbent, (often several-branched, branches slender and flexuous), to 8 dm. |
few to several from base, prostrate, (arising proximal to a terminal cluster of erect leaves, usually unbranched, slender), 0.5–1(–1.5) dm. |
Basal leaves | blade pinnatisect to repand, 3–9(–14) cm, margins entire. |
(petiole slender); blade elliptic to rhombic, 1.5–4(–5) cm, (base gradually tapering to petiole), margins usually entire, rarely dentate. |
Cauline leaves | (sometimes secund, proximal usually petiolate, distal sessile); blade elliptic, 1–6 cm, (distal with cuneate base), margins entire or deeply dentate. |
blade narrowly obovate to oblanceolate, 5–15 mm, margins entire. |
Racemes | dense. |
(relatively short), rather loose. |
Flowers | sepals elliptic to oblong, 3–5.5 mm, (median pair slightly thickened apically, cucullate); petals (sometimes drying slightly purplish), suborbicular or broadly ovate, 4.5–7(–9) mm, (narrowing gradually to short claw). |
sepals ± elliptic, 4–6 mm; petals ovate, 6–8 mm, (claw slightly expanded at base). |
Fruiting pedicels | (horizontal or recurved and ascending at tip, sometimes loosely sigmoid), (5–)10–20 mm. |
(usually secund, recurved), 5–8 mm. |
Fruits | globose or broadly ellipsoid, not or slightly inflated, (4–)5–8 mm, (smooth); valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules (8–)12–16(–20) per ovary; style (1.5–)2–3(–4) mm. |
(pendent), globose, subglobose, or slightly obcompressed, slightly or not inflated, 3–6 mm, (rigid, apex usually beaked); valves pubescent throughout; ovules 8–12 per ovary; style 1–2 mm, (pubescent). |
Seeds | flattened. |
slightly flattened, (suborbicular). |
2n | = 12. |
|
Physaria lindheimeri |
Physaria fremontii |
|
Phenology | Flowering Dec–Apr. | Flowering May–Jun. |
Habitat | Heavy, black, claylike soils, or lighter, sandy soils, thickets, field-margins, roadsides, coastal prairies | Calcareous gravel, loose whitish rubble, limestone pavement, rocky calcareous ridges |
Elevation | 20-800 m (100-2600 ft) | 2100-2800 m (6900-9200 ft) |
Distribution |
TX; Mexico (Tamaulipas) |
WY |
Discussion | Of conservation concern. Physaria fremontii is known from the area of the Wind River Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 649. | FNA vol. 7, p. 638. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Vesicaria lindheimeri, Alyssum lindheimeri, Lesquerella gracilis var. pilosa, Lesquerella lindheimeri | Lesquerella fremontii |
Name authority | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 325. (2002) | (Rollins & E. A. Shaw) O’Kane & Al-Shehbaz: Novon 12: 323. (2002) |
Web links |