Pediomelum latestipulatum

(Shinners) Mahler

Sida 12: 250. 1987.

Endemic
Basionym: Psoralea latestipulata Shinners Field & Lab. 19: 22. 1951
Treatment appears in FNA Volume 11.
Revision as of 17:50, 12 March 2025 by imported>Volume Importer
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Herbs caulescent, 5–45 cm, mostly glandular throughout and pubescent. Stems 1, erect, usually unbranched, rarely branched, leaves dispersed along stem from middle; pseudoscapes absent or to 8 cm; cataphylls 5–12 mm, sometimes sparsely pubescent. Leaves palmately 5–7-foliolate; stipules persistent, narrowly lanceolate to suborbiculate, 8–15 × 2.5–7 mm, glan­dular, sparsely pubescent; petiole not swollen or jointed basally, not canaliculate, 27–100 mm, strigose; peti­olules 1.5–2.5 mm; leaflet blades oblanceolate to elliptic, 2–4.4 × 0.5–1.4 cm, base cuneate, apex acute to obtuse, surfaces glandular, abaxially pubescent, especially along veins and margins, adaxially glabrous. Peduncles 1.3–4.8 cm, shorter than or slightly longer than subtending petiole, pubescent. Inflorescences persistent, ovoid to ellipsoid; rachis 0.6–4.2 cm, nodes 4–12, 2 or 3 flowers per node, internodes to 7 mm; bracts persistent, elliptic to spatulate, or ovate, or oblanceolate to orbiculate, 6–11 × 2–8 mm, glandular, glabrous or sparsely pubescent. Pedicels 2–3 mm. Flowers 18–26 mm; calyx strongly gibbous-campanulate in fruit, 12–19 mm abaxially, 10–15 mm adaxially, glandular and sparsely pubescent distally; tube 6–8 mm; lobes linear-lanceolate, abaxial 4.5–7.5 × 1.5–2 mm, adaxial 3–6 × 1–1.5 mm; corolla blue to purple, banner broadly oblanceolate to obovate, 16–25 × 6–9 mm with claw 7–10 mm, wings 15–20 × 2.5–4 mm with claw 6–9 mm, keel 12–16 × 3–3.5 mm with claw 6–9 mm; filaments 11–16 mm; anthers elliptic, 0.7–0.8 mm; ovary glabrous, style glabrous. Legumes ovoid, 5–6.5 × 4–4.5 mm, glandular, glabrous, beak 5.5–6 mm, slightly shorter to slightly longer than calyx. Seed dark green to olive green, reniform, 4 × 5 mm.

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Stems with erect to spreading hairs. Pediomelum latestipulatum var. latestipulatum
1 Stems with appressed hairs. Pediomelum latestipulatum var. appressum