Polanisia uniglandulosa

(Cavanilles) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle

in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 1: 242. 1824.

Common names: Mexican clammyweed
Basionyms: Cleome uniglandulosa Cavanilles Icon. 4: 3, plate 306. 1797
Synonyms: Polanisia dodecandra subsp. uniglandulosa (Cavanilles) H. H. Iltis
Treatment appears in FNA Volume 7. Treatment on page 204. Mentioned on page 201.

Perennials, 40–80 cm. Stems sparsely or profusely branched; hairs stalked, glandular throughout. Leaves: petiole green to purple, angled, 1.5–4.5 (–6) cm, (glandular); leaflet blade broadly elliptic to oblanceolate, 2–4 × 1–2 cm, margins entire, apex obtuse, mucronulate, surfaces sparsely glandular. Racemes 5–20 cm (10–30 cm in fruit); bracts unifoliate, ovate, 8–12 mm. Pedicels 10–25 (–40) mm. Flowers: sepals purple, oblong, 3–6 × 1.5–2.5 mm, margins entire, apex acuminate, glandular; petals white, narrowly spatulate, clawed, abaxial pair 10–20 × 2–3 (–5) mm, apex emarginate to lacerate, adaxial pair 15–30 × 3–5 mm, apex emarginate; nectary glands bright orange, not conspicuous (in fruit); stamens 20–27, exserted, purple, 20–50 mm; anthers purple, 1–1.3 mm; gynophore 0–2 mm in fruit; ovary 5–10 mm; style deciduous in fruit, 20–40 mm; stigma purple. Capsules (somewhat inflated), 60–100 × 7–10 mm, reticulate, glandular. Seeds 20–65, dark reddish-brown, globose to oblong, 1.5–2 mm, smooth. 2n = 20.


Phenology: Flowering spring–fall.
Habitat: Pinyon, juniper, and oak woodlands, arroyos, riverbeds, roadsides, pastures
Elevation: 300-800 m

Discussion

Polanisia uniglandulosa is the only perennial species of the genus, notable for its large, showy, white petals and silky-iridescent seed testa.

Selected References

None.

Lower Taxa

None.

... more about "Polanisia uniglandulosa"
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
not coiling +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Gordon C. Tucker +
(Cavanilles) de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
Cleome uniglandulosa +
serrulate +, serrate +  and entire +
6 cm60 mm <br />0.06 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Mexican clammyweed +
N.Mex. +, Tex. +  and Mexico +
300-800 m +
adnate +  and free +
dehiscent +  and indehiscent +
elongate +
oblong +  and cylindric +
0 cm0 mm <br />0 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Pinyon, juniper, and oak woodlands, arroyos, riverbeds, roadsides, pastures +
axillary +  and terminal +
arranged +  and alternate +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1-carpellate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
distinct +
unequal +
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
green;purple +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Flowering spring–fall. +
tricolporate +  and binucleate +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
not arillate +
globose +  and oblong +
deciduous +
distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
glandular-pubescent +  and glabrous +
spreading +  and erect +
deciduous +  and caducous +
scale-like +, thread-like +  and 3-8-palmatifid +
deciduous +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Polanisia dodecandra subsp. uniglandulosa +
Polanisia uniglandulosa +
Polanisia +
species +
40 cm400 mm <br />0.4 m <br /> (80 cm800 mm <br />0.8 m <br />) +
perennial +  and annual +