Chylismia eastwoodiae

Herbs annual, succulent, glabrous, glandular puberulent, or villous proximally. Stems unbranched or branched from base, 3–30 cm. Leaves primarily in basal rosette and also cauline; petiole 0.5–8 cm; blade usually not pinnately lobed or, if so, then lateral lobes greatly reduced, terminal lobe oblanceolate to cordate, 0.8–7.5 × 0.4–3 cm, margins entire or sparsely denticulate, pale brown oil cells lining veins abaxially. Racemes nodding, elongating after anthesis. Flowers opening at sunrise; buds without subapical free tips; floral tube 2–4.5 mm, villous inside proximally; sepals 3–8 mm; petals bright yellow, with red dots near base, fading pale yellow or yellowish orange, 5.5–9 mm; stamens unequal, filaments of antisepalous stamens 3–8 mm, those of antipetalous ones 2.8–5.5 mm, anthers 2–4 mm, ciliate; style 10–17 mm, stigma exserted beyond anthers at anthesis. Capsules erect, spreading, or slightly reflexed, clavate, 18–40 mm; pedicel 4–28 mm. Seeds 1.2–1.7 mm. 2n = 14.

Phenology: Flowering Apr–Jun.
Habitat: Clay flats, on gray, alkaline, marine-deposited gumbo, sandy draws.
Elevation: 1200–1800 m.

Colo., Utah.

Discussion

Chylismia eastwoodiae is known from Mesa County, Colorado, and from Emery County south to San Juan County, Utah. P. H. Raven (1962, 1969) suspected this species to be self-incompatible, but did not have data to make the determination.

Selected References

None.

Lower Taxa