Paysonia lescurii

(A. Gray) O’Kane & Al-Shehbaz

Novon 12: 381. 2002.

Common names: Lescur’s bladderpod
Basionym: Vesicaria lescurii A. Gray Manual ed. 2, 38. 1856
Synonyms: Alyssum lescurii (A. Gray) A. Gray Lesquerella lescurii (A. Gray) S. Watson
Treatment appears in FNA Volume 7. Treatment on page 614. Mentioned on page 612.

Annuals; hirsute to coarsely pubescent or glabrous, trichomes simple, with branched, smaller ones. Stems erect or decumbent, 1–3 dm. Basal leaves: blade 3–7 cm × 5–20 mm, margins lyrate, deeply lobed (lateral lobes remote), abaxial surface hirsute (trichomes mostly simple), adaxial coarsely pubescent (trichomes simple, with branched, smaller ones). Cauline leaves: blade broadly oblong to ovate, 0.5–2 cm × 3–10 mm, base auriculate to sagittate, sometimes amplexicaul, margins dentate, (surfaces coarsely pubescent, trichomes simple, with branched, smaller ones, often simple ones absent distally). Fruiting pedicels divaricate, nearly straight (not expanded apically), 8–15 mm, densely pubescent (trichomes coarse, branched). Flowers: sepals (yellowish at anthesis), 3–4 × 1.5–2 mm, (outer pair slightly saccate, inner pair flat basally), apex rounded to slightly emarginate, coarsely pubescent; petals yellow, 5–7 × 3.5–4.5 mm, (gradually narrowed to base); filaments dilated basally, (2.5–3.5 mm, glandular tissue continuous, subtending filament base, surrounding attachment point of single stamens). Fruits sessile, orbicular or suborbicular (slightly longer than broad), 4–6 × 3–4 mm, (strongly latiseptate); valves coarsely, densely pubescent outside, trichomes simple, bulbous-based, mixed with branched ones, sparsely pubescent inside, trichomes branched; replum not flattened, (thick, glabrous); septum complete, (dense); ovules 4–8 per ovary; style 1.5–2 mm, glabrous; stigma expanded in dried material, same diameter as style when fresh. Seeds suborbicular (slightly longer than broad), 2–2.8 × 1.5–2 mm. 2n = 16.


Phenology: Flowering Mar–May.
Habitat: Hillsides, cedar glades, flood plains, fields, pastures

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Paysonia lescurii"
sagittate +  and oblong +
rounded +  and slightly emarginate +
Steve L. O’Kane Jr. +
(A. Gray) O’Kane & Al-Shehbaz +
auriculate +  and sagittate +
Vesicaria lescurii +
appendaged +  and unappendaged +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lobed +  and dentate +
broadly oblong;ovate +
much smaller +  and reduced +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
differentiated +
Lescur’s bladderpod +
emarginate +  and entire +
Ala. +, Ky. +  and Tenn. +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
tetradynamous +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
spreading +, ascending +  and suberect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
suborbicular +  and orbicular +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
latiseptate +, sessile +  and subsessile +
angustiseptate +, flattened +, terete +, obovoid +, cordate +, elliptic +, orbicular +, suborbicular +, subpyriform +, subglobose +  and globose +
latiseptate +  and unsegmented +
angustiseptate +  and terete +
Hillsides, cedar glades, flood plains, fields, pastures +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
lobed;lyrate +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
rudimentary +
obovate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Flowering Mar–May. +
trinucleate +  and 3(-11)-colpate +
recurved +  and ascending +
slender +
not flattened +
sub-biseriate +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
suborbicular +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +  and caducous +
distinct +
reflexed +, ascending +, spreading +  and erect +
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 +
decumbent +  and erect +
entire +  and capitate +
2-lobed +  and entire +
expanded +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Alyssum lescurii +  and Lesquerella lescurii +
Paysonia lescurii +
Paysonia +
species +
branched +, bulbous-based +  and simple +
anastomosing +
hirsute +  and coarsely pubescent or glabrous +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
glabrous +  and pubescent +
9 +, 8 +  and 7 +