Oenothera coryi
Ann. Missouri Bot. Gard. 73: 475. 1986.
Herbs acaulescent or caulescent, densely strigillose and glandular puberulent distally; from a taproot. Stems densely leafy, 4–20 cm. Leaves in a basal rosette, sometimes also cauline, 5–16 × (0.2–) 0.3–0.5 (–0.7) cm; petiole 0.6–3.5 cm; blade linear to narrowly lanceolate, margins entire or sometimes proximal 1/2 of blade remotely lobed, apex long-attenuate, acute to rounded. Flowers usually 1–3, rarely more, opening per day near sunset, weakly scented; buds with unequal free tips 0.7–1.2 mm; floral-tube (55–) 75–100 (–125) mm; sepals 34–40 mm; petals lemon-yellow, fading orange, drying lavender to purple, broadly obovate, 35–43 mm, sometimes with terminal tooth; filaments 17–25 mm, anthers 14–17 mm; style (85–) 105–135 (–143) mm, stigma exserted beyond anthers at anthesis. Capsules leathery, lanceoloid to ovoid, winged, wings 4–6 mm wide, body 25–30 × 8 mm, dehiscent 1/4–1/3 their length; pedicel 1–2 (–3) mm. Seeds numerous, usually in 2 distinct rows per locule, often reduced to 1 row near apex, rarely 1 row throughout, obovoid to subcuboid, 2.5–4 × 2.5–3.5 mm. 2n = 42.
Phenology: Flowering Apr–May.
Habitat: Open grasslands, disturbed areas.
Elevation: 300–1000 m.
Discussion
Oenothera coryi is known only from Baylor, Callahan, Knox, Nolan, Taylor, and Throckmorton counties in north-central Texas and Crosby and Garza counties in the Texas Panhandle.
Selected References
None.
Lower Taxa
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