Physaria densiflora |
Physaria angustifolia |
|
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denseflower bladderpod, low bladderpod |
threadleaf bladderpod |
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Habit | Annuals or biennials; caudex simple or branched, (relatively small, cespitose); densely pubescent, trichomes (spreading, sessile or short-stalked), 5–7-rayed, rays distinct and simple, (tuberculate, finely tubercled with a U-shaped notch on one side). | 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, erect or decumbent, (rarely branched, usually leafy), to 4 dm. |
simple or few to several from base, erect, (sometimes branched), to 4 dm. |
Basal leaves | blade lyrate-pinnatifid, 1–7 cm, margins entire or shallowly dentate. |
blade elliptic to rhombic, 3–8 cm, (base narrowing gradually to petiole), margins entire, repand, coarsely toothed, or pinnatifid. |
Cauline leaves | (sessile or shortly petiolate); blade narrowly obovate to elliptic, 0.5–6 cm, margins entire, repand, or shallowly dentate. |
(proximal often shortly petiolate, distal sessile); blade linear or narrowly obovate, 1.5–6(–10) cm, margins entire, repand, or shallowly toothed. |
Racemes | dense, (elongated in fruit, often subtended by distal cauline leaves). |
usually loose. |
Flowers | sepals elliptic, 3.7–7.2 mm, (lateral pair somewhat cucullate, median pair thickened apically); petals (yellow to orange-yellow), obovate to obdeltate, (4.5–)7–10(–11) mm, (tapering to short claw, apex often emarginate). |
sepals elliptic or ovate, 4–6 mm, (lateral pair usually subsaccate); petals obovate to obdeltate, 6–10 mm, (apex often emarginate). |
Fruiting pedicels | (usually divaricate-spreading, straight or slightly curved, delicate, sometimes drooping, especially on herbarium specimens), 7–10 mm, (somewhat rigid). |
(usually divaricate, sometimes horizontal, straight or slightly curved), 8–20 mm. |
Fruits | (sessile or substipitate), globose or broadly obovate, not inflated, 4–6 mm, (smooth); valves (not retaining seeds after dehiscence), glabrous; replum as wide as or wider than fruit; ovules 8–16 per ovary; style 2–5 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 | flattened. |
flattened, (margined). |
2n | = 14. |
= 10. |
Physaria densiflora |
Physaria angustifolia |
|
Phenology | Flowering Mar–May. | Flowering Apr(-May). |
Habitat | Sandy, granitic, or calcareous soils, sandy ledges, limestone outcrops, rocky prairies, uplands | Shallow limestone-derived soils, sometimes spreading to disturbed sites |
Elevation | 30-400 m (100-1300 ft) | 90-300 m (300-1000 ft) |
Distribution |
TX |
OK; TX |
Discussion | Alyssum densiflorum (A. Gray) Kuntze (1891), not Desfontaines (1808) is an illegitimate name, sometimes found in synonymy with Physaria densiflora. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 7, p. 633. | FNA vol. 7, p. 625. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Vesicaria densiflora, Lesquerella densiflora | Vesicaria angustifolia, Lesquerella angustifolia, Lesquerella longifolia |
Name authority | (A. Gray) O’Kane & Al-Shehbaz: Novon 12: 322. (2002) | (Nuttall ex Torrey & A. Gray) O’Kane & Al-Shehbaz: Novon 12: 321. (2002) |
Web links |