Psorothamnus kingii
Mem. New York Bot. Gard. 27: 27. 1977.
Subshrubs. Branches diffuse; sterile shoots sharp-tipped. Stems at intervals from creeping rootstocks, 1–3.5 dm, gland-dotted when young, ± pilose to appressed-pubescent and nearly sericeous. Leaves pinnate, 1–4.5 cm; leaflets 3–9, blades ovate to oblong-elliptic, (3–)5–12(–15) mm, terminal leaflet slightly longer than or ± equal to laterals, surfaces irregularly gland-dotted abaxially, densely hairy, especially adaxially, to glabrate. Racemes loose; rachis with thornlike tip in anthesis, 1–4 cm; bracts subulate, 1.5–2.5 mm; bracteoles present. Flowers: calyx 7–8.2 mm, thinly strigulose, tube 3.8–4.2 mm, ribs not prominent, intervals each with 2–7 glands, lobes ovate to lanceolate, abaxial lobe shorter; corolla blue; banner obovate, 7–9.2 mm, claw cuneate; wings oblong, 5–6.6 × 3.2–3.9 mm; keel broadly obovate, 5.2–6.5 × 3.4–4 mm; stamens 8–9.5 mm; filaments distinct to 3.3–4.4 mm; anthers 0.8–1.5 mm, connective not gland-tipped. Legumes obliquely obovoid, (3.5–)4–5.5 mm, gland-dotted distally, pubescent. Seeds 1 or 2, 3.1–2.8 mm. 2n = 20.
Phenology: Flowering summer.
Habitat: Dune-sand, flat areas around dunes.
Elevation: 1200–1600 m.
Distribution
Nev.
Discussion
Psorothamnus kingii is known from near Winnemucca and from Carson Sink in Churchill and Humboldt counties.
Selected References
None.