Eremogone macradenia
Novosti Syst. Vyssh. Rast. 10: 140. 1973.
Plants tufted, green, not glaucous, with woody base. Stems erect, (10–) 20–40 (–70) cm, glabrous to stipitate-glandular. Leaves: basal leaves sparse or absent; cauline leaves usually in 5–12+ pairs, not significantly reduced; basal blades ascending to arcuate-spreading or recurved, needlelike or narrowly linear, (0.7–) 2–6 (–7) cm × 0.8–2 mm, ± rigid, herbaceous to subsucculent, apex blunt to spinose, glabrous, not glaucous. Inflorescences 3–20 (–30) -flowered, ± compact cymes; branches ascending to erect. Pedicels 3–45 mm, glabrous or stipitate-glandular. Flowers: sepals 1–3-veined, ovate to lanceolate or elliptic, 4.5–7.2 mm, to 8 mm in fruit, margins narrow to broad, apex acute to acuminate, glabrous to sparsely stipitate-glandular; petals white or yellowish, oblanceolate to spatulate, 6–11 mm, 1–2 times as long as sepals, apex entire or erose; nectaries thickened, molarlike, apically 2-lobed, 1–1.5 mm, or narrowly longitudinally rectangular, truncate, 0.7–0.8 mm, densely minutely pubescent with erect to spreading hairs. Capsules 6–8 mm, glabrous. Seeds greenish or reddish-brown to blackish, suborbicular to pyriform or ovoid, 1.3–3.2 mm, tuberculate, sometimes echinate on abaxial ridge; tubercles low, rounded to conic.
Distribution
Ariz., Calif., Nev., Utah
Discussion
Varieties 2 (2 in the flora).
Eremogone macradenia is in the Center for Plant Conservation’s National Collection of Endangered Plants.
Selected References
None.
Key
| 1 | Cauline leaves mostly in 5-8 pairs, blade ± ascending throughout, 0.8-1.2 mm wide | Eremogone macradenia var. macradenia |
| 1 | Cauline leaves mostly in 6-12+ pairs, blade curved downward, especially proximal ones, 1.2-2 mm wide | Eremogone macradenia var. arcuifolia |