Difference between revisions of "Polanisia dodecandra"
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 1: 242. 1824.
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|genus=Polanisia | |genus=Polanisia | ||
|species=Polanisia dodecandra | |species=Polanisia dodecandra | ||
Revision as of 17:56, 18 September 2019
Annuals, rarely perennials, (5–)10–60(–90+) cm. Stems branched; hairs stalked, glandular throughout. Leaves: petiole green to purple, angled, 1.5–4.5(–6) cm, glandular; leaflet blade oblanceolate to obovate or broadly elliptic, 1.9–4.5(–6.5) × 0.5–2(–3) cm, margins entire, surfaces sparsely glandular. Racemes (dense) 5–20 cm (10–30 cm in fruit); bracts unifoliate, lanceolate to orbiculate, 5–20 mm. Pedicels 10–25(–40) mm. Flowers: sepals purple, oblong, 3–6 × 1.5–2.5 mm, margins entire, apex acuminate, glandular; petals white, pink, rose, or purple, oblong-ovate, clawed, abaxial pair (3–)5–10 × 1.8–3(–5) mm, apex emarginate to lacerate, adaxial pair 8–14 × 3–5 mm, apex emarginate; nectary glands bright orange, not conspicuous (in fruit); stamens 10–20, exserted, purple, (6–)7–28(–40) mm; anthers purple, 1–1.3 mm; gynophore 0–2 mm in fruit; ovary 5–10 mm; style deciduous in fruit, 5–17 mm; stigma purple. Capsules (inflated) 40–70 × 5–9 mm, reticulate, glandular. Seeds 20–65, dark reddish brown, globose to oblong, 2–2.3 mm, roughened or tuberculate-rugose.
Distribution
North America, n Mexico.
Discussion
Subspecies 3 (3 in the flora).
Selected References
Lower Taxa
Key
| 1 | Petals (3-)5-7(-8) mm; stamens ± equaling orslightly longer than petals. | Polanisia dodecandra subsp. dodecandra |
| 1 | Petals (6-)8-14(-17) mm; stamens ± equaling, or slightly longer to ca. 2 times or more as long as petals | > 2 |
| 2 | Inflorescence bracts ovate to orbiculate; leaflet blade apex rounded; seeds tuberculate-rugose. | Polanisia dodecandra subsp. riograndensis |
| 2 | Inflorescence bracts lanceolate to ovate; leaflet blade apex acute to obtuse; seeds roughened. | Polanisia dodecandra subsp. trachysperma |