Herbs caulescent, to 100 cm, mostly glandular throughout, strigose, sometimes becoming glabrate. Stems 1, erect, slen­der, usually unbranched, rarely branched, leaves sparsely dis­persed along stem, proximal ones often caducous; pseudoscapes to 6 cm (when present); cataphylls absent or 5–15 mm. Leaves palm­ately 3–5-foliolate, sparse; stipules tardily deciduous, linear-lanceolate to lanceolate, 6–15 × 0.5–2 mm, glan­dular, glabrate to densely pubescent, at least basally; petiole sometimes swollen but not jointed basally, slightly canaliculate, 7–60 mm, strigose; petiolules 2–3 mm; leaflet blades narrowly oblanceolate to elliptic, 3.5–9.5 × 1.3–8 cm, base cuneate, apex obtuse-acuminate, surfaces abaxially glandular and glabrous or pubescent, adaxially glabrous. Peduncles 2.5–7.5 cm, longer than subtending petiole, strigose. Inflorescences persistent, oblong to elliptic; rachis 1.5–7 cm, nodes 3–15, 2 or 3 flowers per node, internodes elongating to 15 mm in fruit; bracts persistent or tardily deciduous, mostly oblanceolate to obovate, 4–9 × 1.5–4 mm, glabrate to pubescent. Pedicels 1.5–2 mm. Flowers 12–18 mm; calyx strongly gibbous-campanulate in fruit, 7.5–12 mm abaxially, 6–10 mm adaxially, glandular, pubescent; tube 4–4.5 mm; abaxial lobe lanceolate to elliptic, 3.5–7.5 × 1.5–3 mm, adaxial lobes linear-lanceolate, 2.5–3 × 1 mm; corolla pale blue to lavender, banner narrowly oblanceolate, 12–15.5 × 6–7 mm with claw 4–5 mm, wings 11–14 × 2–3 mm with claw 5–6 mm, keel 8–11 × 2.5–3 mm with claw 2.5–3 mm; filaments 9–11 mm; anthers elliptic, 0.5–0.6 mm; ovary glabrous or pubescent on distal 1/4, style pubescent basally. Legumes globose-ovoid, 5–6 × 3.5–5 mm, glandular, pubescent apically, beak 2–4 mm, shorter than calyx. Seed brown, reniform to globose, 3–3.5 × 4–4.5 mm. 2n = 22.

Phenology: Flowering spring–summer.
Habitat: Shallow, limestone soils, hillsides, rock outcrops, open woodlands.
Elevation: 200–500 m.

Distribution

• Generated Map
• Legacy Map

Loading map...

Tex.

Discussion

Pediomelum cyphocalyx is infrequently found in a narrow range along the southern to southeastern edge of the Edwards Plateau in Texas. It is distinguished from its congeners in the area by its narrow leaflets and slender, erect habit.

Selected References

None.

Lower Taxa

None.