Physaria nelsonii

O’Kane & Al-Shehbaz

Novon 12: 326. 2002.

Common names: Nelson’s bladderpod
Basionym: Lesquerella condensata A. Nelson Bull. Torrey Bot. Club 26: 238. 1899,
Synonyms: Lesquerella alpina subsp. condensata (A. Nelson) Rollins & E. A. Shaw Lesquerella alpina var. condensata (A. Nelson) C. L. Hitchcock
Treatment appears in FNA Volume 7. Treatment on page 652. Mentioned on page 621, 660.

Perennials; (diminutive); caudex branched, (densely cespitose, mound-forming); densely pubescent, trichomes (flaring, giving a shaggy appearance), usually 4–5-rayed, rays furcate or bifurcate, (strongly tuberculate throughout). Stems few to several from base, erect, (from basal tuft), 0.1–0.2 (–0.3) dm, (not or just barely exceeding leaves). Basal leaves: blade spatulate to oblanceolate, 0.5–1.5 cm, (base gradually narrowed to petiole), margins entire. Cauline leaves (absent or few); similar to basal, blade linear. Racemes dense, (few-flowered). Fruiting pedicels (loosely sigmoid), 3–5 mm. Flowers: sepals (pale-yellow), oblong to elliptic, 4–5 mm, (median pair usually thickened apically, cucullate); petals (bright-yellow), lingulate, 6–8 mm. Fruits lanceolate, compressed apically, 2.5–3 (–4) mm; valves pubescent, trichomes spreading, (appearing fuzzy), rarely with trichomes inside; ovules 4–8 per ovary; style 2.5–4 mm. Seeds plump, (oblong).


Phenology: Flowering May-mid Jun.
Habitat: Limestone, windswept knolls and cliffs, nearly barren areas with other cushion-forming plants
Elevation: 1600-2300 m

Discussion

Physaria nelsonii is morphologically similar to 73. P. pycnantha, which traditionally was included in a broader P. nelsonii. These allopatric species are distinguished by styles equal to or exceeding the length of fruit and fruiting stems overtopped by basal leaves (P. nelsonii) versus styles shorter than fruits and fruiting stems usually exserted beyond basal leaves (P. pycnantha).

Selected References

None.

Lower Taxa

None.

"not" is not a number. "elongated" is not a number."thick" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Physaria nelsonii"
ovate +  and narrowly oblong +
Steve L. O’Kane Jr. +
O’Kane & Al-Shehbaz +
Lesquerella condensata +
appendaged +  and unappendaged +
repand +  and dentate +
spatulate;oblanceolate +
much smaller +  and reduced +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
urceolate +, campanulate +  and tubular +
sessile +  and petiolate +
well-developed +
distinct +
not +  and differentiated +
Nelson’s bladderpod +
emarginate +  and entire +
Utah +  and Wyo. +
1600-2300 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
actinomorphic +
lingulate +, oblong +  and elliptic +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
2-valved +  and capsular +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
compressed +  and lanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
latiseptate +, stipitate +, , +, subsessile +  and sessile +
angustiseptate +, terete +, not +, inflated +, not torulose +, obovoid +, ovoid +, ovate +, obpyriform +, oblong +, obdeltate +, obcordate +, lanceolate +, elliptic +, ellipsoid +, suborbicular +, orbicular +, subglobose +  and globose +
latiseptate +  and unsegmented +
angustiseptate +  and terete +
Limestone, windswept knolls and cliffs, nearly barren areas with other cushion-forming plants +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
sinuate;dentate;sinuate;dentate +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
purple +, white +, orange +  and yellow +
rudimentary +
obdeltate +, oblanceolate +, ovate +, obovate +  and spatulate +
Flowering May-mid Jun. +
trinucleate +  and 3(-11)-colpate +
ascending +, spreading +, horizontal +  and erect +
slender +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
bifurcate +  and furcate +
rounded +  and narrowly oblong +
not +  and mucilaginous +
margined +  and winged +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
suborbicular +, lenticular +  and flattened +
persistent +  and caducous +
distinct +
spreading +  and erect +
not saccate +, subsaccate +, deltate +, ovate +, oblong +, elliptic +, lanceolate +  and linear +
perforate +  and complete +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
prostrate +  and decumbent +
few +  and several +
2-lobed +  and entire +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Lesquerella alpina subsp. condensata +  and Lesquerella alpina var. condensata +
Physaria nelsonii +
Physaria +
species +
simple +, stalked +, subsessile +  and sessile +
stellate-scalelike +
coiled +, 1-7-veined +  and veined +
anastomosing +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
glabrous +  and pubescent +
15 +, 12 +, 10 +, 9 +, 8 +, 7 +, 6 +, 5 +  and 4 +