Physaria filiformis

(Rollins) O’Kane & Al-Shehbaz

Novon 12: 323. 2002.

Common names: Limestone glade or Missouri bladderpod
Basionym: Lesquerella filiformis Rollins Rhodora 58: 201. 1956
Treatment appears in FNA Volume 7. Treatment on page 637. Mentioned on page 619.

Annuals; with a fine taproot; densely pubescent, trichomes (sessile), usually 4-rayed, rays forked, rarely simple or tripartite, (finely tuberculate). Stems several from base, (slender), erect or outer decumbent, (usually branched, branches filiform, bud clusters of growing plants drooping), to 2.5 dm. Basal leaves: blade orbicular to broadly spatulate, 1–2.4 cm, margins entire or sinuate. Cauline leaves: (proximal often petiolate, distal sessile); similar to basal, blade spatulate to oblanceolate or (distal) linear, (base cuneate), margins entire or sinuate. Racemes loose. Fruiting pedicels (usually divaricate-ascending, straight or slightly curved), 7–11 mm. Flowers: sepals oblong or elliptic, 2.5–4.6 mm, (median pair slightly thickened apically); petals (pale yellow), spatulate to obovate, 5–9 mm, (apex ± emarginate). Fruits (sessile or shortly stipitate), globose, not inflated, 3–4 mm; valves (not retaining seeds after dehiscence), glabrous throughout; replum as wide as or wider than fruit; ovules 4 per ovary; style 3–5 mm. Seeds flattened. 2n = 14.


Phenology: Flowering Apr–May.
Habitat: Limestone, dolomite, and shale, sparsely vegetated or barren areas, cedar glades, old pastures, along roadsides
Elevation: 200-300 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Physaria filiformis"
Steve L. O’Kane Jr. +
(Rollins) O’Kane & Al-Shehbaz +
Lesquerella filiformis +
Limestone glade or Missouri bladderpod +
Ala. +, Ark. +  and Mo. +
200-300 m +
Limestone, dolomite, and shale, sparsely vegetated or barren areas, cedar glades, old pastures, along roadsides +
Flowering Apr–May. +
Coulterina +  and Lesquerella +
Physaria filiformis +
Physaria +
species +