Tropicos | Name - Phoenicaulis cheiranthoides Nutt.

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Phoenicaulis cheiranthoides Nutt.

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Phoenicaulis cheiranthoides Nuttall in J. Torrey & A. Gray, Fl. N. Amer. 1: 89. 1838; Parrya cheiranthoides (Nuttall) Jepson, Fl. Calif. 2: 75. 1936. TYPE: United States, “High hills to the east of Wallawallah River, and on rocks on the upper part of Oregon,” Thomas Nuttall s.n. (holotype, BM!).

Arabis pedicellata A. Nelson, Proc. Biol. Soc. Wash. 17: 91. 1904; Parrya pedicellata (A. Nelson) Tidestrom, Contr. U.S. Natl. Herb. 25: 248. 1925; Phoenicaulis pedicellata (A. Nelson) A. Heller, Muhlenbergia 2: 203. 1906; Streptanthus pedicellatus (A. Nelson) A. Nelson, Proc. Biol. Soc. Wash. 17: 92. 1904. TYPE: United States, Nevada, Hunter Creek Canyon, 5 miles W of Reno, 16 May 1903, P. B. Kennedy & G. H. True 705 (holotype, RM; isotypes, DS!, UC!).

Arabis menziesii var. lata A. Nelson & J. F. Macbride, Bot. Gaz. 55: 374. 1913. TYPE: United States, Isaho, Owyhee Co., House Creek, lava cliff, 30 Jun 1912, A. Nelson & J. F. Macbride 1838 (holotype, RM!; isotypes, GH!, MO!).

Parrya menziesii var. lanuginosa S. Watson in A. Gray & S. Watson, Syn. Fl. N. Amer. 1(1); 152. 1895; Arabis menziesii var. lanuginosa (S. Watson) A. Nelson & J. F. Macbride, Bot. Gaz. 55: 374. 1913; Parrya cheiranthoides var. lanuginosa (S. Watson) M. Peck, Man. Pl. Oregon 352. 1941; Phoenicaulis cheiranthoides subsp. lanuginosa (S. Watson) Abrams, Ill. Fl. Pacific States 2: 290. 1944; Phoenicaulis cheiranthoides var. lanuginosa (S. Watson) Rollins, Rhodora 43: 480. 1941; Phoenicaulis menziesii var. lanuginosa (S. Watson) A. Heller, Cat. N. Amer. Pl., ed. 2. 4. 1900. TYPE: United States, bluffs E side of the Columbia, 14 Oct 1880, S. Watson 28 (lectotype here informally designated, GH!).

Parrya menziesii var. glabra Jepson, Man. Fl. Pl. Calif. 434. 1925; Parrya cheiranthoides var. glabra (Jepson) Jepson, Fl. Calif. 2: 76. 1936; Phoenicaulis cheiranthoides var. glabra (Jepson) Abrams, Ill. Fl. Pacific States 2: 290. 1944. TYPE: United States, California, Modoc Co., Lake City Mt., C. C. Bruce 2250 (holotype, JEPS).

Herbs, perennial; caudex well developed, simple or few branched, covered with petiolar remains of previous years. Stems (0.8–)1.2–2.5(–3) dm, erect, simple or rarely branched above, glabrous. Basal leaves persistent; petiole (1–)2–5.5(–8) cm, thickened and glabrous at base; leaf blade linear-oblanceolate to obovate, (2–)3–7(–10) x (0.5–)0.8–2(–2.6) cm, tomentose with fine dendritic trichomes, base attenuate, margin entire, apex obtuse to acute; cauline leaves 5–12, not overlapping, sessile, ovate to oblong or linear lanceolate, 7–20 x 2–6 mm, densely to sparsely pubescent or rarely subglabrous, base auriculate, margin entire. Racemes glabrous; fruiting pedicels divaricate, (0.6–)1–3(–3.5) cm. Sepals oblong, 4–6 x 1.5–2.2 mm, glabrous; petals purple to lavender, spatulate to oblanceolate, 9–13(–15) x 2.5–4 mm, attenuate to base; filaments 4–5 mm; anthers 1–1.5 mm. Fruits lanceolate to linear, (2–)3–6(–9) cm x (2–)3–5(–6) mm, latiseptate, divaricate; valves glabrous, with a prominent midvein; gynophore obsolete or rarely to 2 mm; style 0.5–2 mm. Seeds brown, broadly ovate to oblong, (2–)2.5–3.2 x (1.5–)1.8–2.5 mm. 2n = 28.

Flowering: Apr–Jun.

Habitat: rocky scree, rocky basaltic slopes, volcanic rubble, barren clay slopes, rimrocks, scablands, ledges of metamorphic rock outcrops, rocky crevices and open knolls, sandy banks, gravelly meadows, grassy or gravelly hillsides, sagebrush scrub and slopes, alpine slopes, volcanic boulders.

Elevation: 700–3150 m.

Distribution: United States (California, Idaho, Nevada, Oregon, NW Utah, Washington).