Physaria calderi |
Physaria angustifolia |
|
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Calder's bladderpod |
threadleaf bladderpod |
|
Habit | Perennials; caudex simple or branched; densely pubescent throughout, trichomes (sessile or subsessile), rays distinct or slightly fused at base, furcate or bifurcate, (strongly umbonate, tuberculate, tubercles often relatively larger, fewer over center). | Annuals; with a fine taproot; ± densely pubescent, trichomes several-rayed, rays distinct or fused at base, bifurcate, (prominently tuberculate throughout). |
Stems | simple or few to several from base, usually erect to spreading, sometimes prostrate, 0.5–2 dm. |
simple or few to several from base, erect, (sometimes branched), to 4 dm. |
Basal leaves | blade oblanceolate, 2–3 cm, margins entire. |
blade elliptic to rhombic, 3–8 cm, (base narrowing gradually to petiole), margins entire, repand, coarsely toothed, or pinnatifid. |
Cauline leaves | (sessile or proximal shortly petiolate); blade narrowly oblanceolate, 0.5–1.5 cm, margins entire. |
(proximal often shortly petiolate, distal sessile); blade linear or narrowly obovate, 1.5–6(–10) cm, margins entire, repand, or shallowly toothed. |
Racemes | loose. |
usually loose. |
Flowers | sepals ovate to elliptic, (3–)4–5(–6) mm, (median pair often thickened apically, cucullate); petals obovate, (6–)7–10 mm (nearly as wide, abruptly narrowed to claw, ca. 1 mm wide). |
sepals elliptic or ovate, 4–6 mm, (lateral pair usually subsaccate); petals obovate to obdeltate, 6–10 mm, (apex often emarginate). |
Fruiting pedicels | (erect to divaricate or ascending, sometimes curved), (5–)10–20(–40) mm, (stout). |
(usually divaricate, sometimes horizontal, straight or slightly curved), 8–20 mm. |
Fruits | subglobose to ellipsoid, compressed (usually angustiseptate), to 8 mm; (valves not retaining seeds after dehiscence); replum as wide as or wider than fruit; ovules 10–14 per ovary; style 1–2 mm. |
not didymous, ± globose, slightly inflated, 4–6 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4 per ovary; style 2–3.5 mm; (stigma expanded). |
Seeds | plump. |
flattened, (margined). |
2n | = 20. |
= 10. |
Physaria calderi |
Physaria angustifolia |
|
Phenology | Flowering Jun–Aug. | Flowering Apr(-May). |
Habitat | Dry rocky summits, limestone flats and slopes, alpine knolls | Shallow limestone-derived soils, sometimes spreading to disturbed sites |
Elevation | 600-1500 m (2000-4900 ft) | 90-300 m (300-1000 ft) |
Distribution |
AK; NT; YT |
OK; TX |
Discussion | Physaria calderi is known from the Ogilvie and Richardson mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 7, p. 629. | FNA vol. 7, p. 625. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lesquerella calderi, Lesquerella arctica subsp. calderi | Vesicaria angustifolia, Lesquerella angustifolia, Lesquerella longifolia |
Name authority | (G. A. Mulligan & A. E. Porsild) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | (Nuttall ex Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) |
Web links |