Hesperidanthus linearifolius

Illustrator: Yevonn Wilson-Ramsey

Copyright: Flora of North America Association

Perennials. Stems simple or few from caudex, erect, (often much-branched distally), (2.5–)3.5–10(–15) dm. Leaves shortly petiolate; blade usually linear to linear-lanceolate, rarely lanceolate, (2.5–)3.5–12(–15) cm × (1–)2–6(–10) mm (smaller distally), base cuneate to attenuate (or petiolelike), margins entire or, very rarely, sparsely denticulate, apex acuminate to acute. Racemes several-flowered, (proximalmost flowers sometimes bracteate). Fruiting pedicels divaricate or ascending, straight, (5–)8–20(–25) mm. Flowers: sepals purplish, (4–)4.5–7 × 1–2 mm, (median pair apical cuculla to 0.7 mm); petals purple, (10–)12–16(–18) × (2–)3.5–5.5 mm, claw distinctly differentiated from blade, [5–7(–9) mm]; filaments 2–4 mm; anthers narrowly oblong to linear, 2–4 mm; gynophore 0.4–1(–2) mm. Fruits usually straight, rarely curved, terete, (3.5–)4–9(–11) cm × 1–1.5 mm; ovules (76–)80–110 per ovary; style subclavate to cylindrical, 0.5–1.8(–2.5) mm; stigma conical, 2-lobed (lobes prominent, connivent). Seeds 0.9–1.6 × 0.5–0.9 mm. 2n = 22, 44.

Phenology: Flowering Jul–Nov.
Habitat: Open woods, dry hillsides, oak woodland, mixed conifer forests, arroyos, canyons, rocky ridges, limestone ledges, sandstone crevices, roadsides
Elevation: 700-3100 m

Distribution

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Ariz., Colo., N.Mex., Tex., Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Sonora, Zacatecas).

Discussion

Selected References

None.

Lower Taxa

None.