Oxystylis lutea
in J. C. Frémont, Rep. Exped. Rocky Mts., 313. 1845.
IllustratedEndemic
Treatment appears in FNA Volume 7. Treatment on page 215.
Plants 10–60(–150) cm. Leaves: stipules crinkled; petiole 1.4–7 cm; petiolules 2–4 mm; leaflet blade elliptic to elliptic-obovate, 1.5–5 × 0.5–2.5 cm, margins entire, apex obtuse. Racemes dense, ca. 1 cm (2–3 cm in fruit); bracts unifoliate, 2–4 mm. Pedicels sparsely glandular, 1–2 mm. Flowers: sepals green, lanceolate, 1.4–1.7 × 0.2–0.3 mm, margins entire, glabrous; petals yellow, oblong to ovate, 2–4 × 1–1.6 mm; stamens yellow, 4–4.5 mm; anthers 1–1.2 mm; gynophore 0.1–0.2 mm in fruit; ovary 0.3 mm; style 0.8–1 mm. Schizocarps 1 × 0.6 mm, smooth. Seeds 0.5 × 0.3 mm. 2n = 20, 40.
Phenology: Flowering spring–summer.
Habitat: Dry, sandy, gravelly desert flats, scrub
Elevation: 1200-1600 m
Discussion
Selected References
None.
Lower Taxa
None.