Thelypodiopsis juniperorum

(Payson) Rydberg

Fl. Rocky Mts. ed. 2, 1123. 1923.

Basionym: Sisymbrium juniperorum Payson Univ. Wyoming Publ. Sci., Bot. 1: 12. 1922
Synonyms: Sisymbrium elegans var. juniperorum (Payson) H. D. Harrington
Treatment appears in FNA Volume 7. Treatment on page 726. Mentioned on page 724.

Annuals; (glaucous), pilose throughout or at least basally, or glabrous distally. Stems (simple or few to several from base), branched distally, 1.5–10 dm, (pilose basally). Basal leaves (soon withered); rosulate; petiole 0.5–2.5 cm; blade oblanceolate, 5–15 cm × 10–20 mm, margins entire or dentate. Cauline leaves sessile; blade oblong, base auriculate to amplexicaul, margins entire. Racemes slightly dense. Fruiting pedicels horizontal to divaricate-ascending, often straight, 7–20 mm, (glabrous or sparsely pilose). Flowers: sepals erect, purple, 5–7 × 2–3 mm; petals purple, suborbicular to broadly obovate, 14–17 × 5–9 mm, claw 4–7 mm; median filament pairs 4–7 mm; anthers linear, 3–4 mm; gynophore (slender), 3–6 mm. Fruits erect to ascending, straight, torulose, 5–9 cm × 1–1.2 mm; style cylindrical, (slender), 2–3 mm; stigma 2-lobed. Seeds ca. 1.5 × 0.9 mm.

Phenology: Flowering May–Jun.
Habitat: Pinyon-juniper woodlands, sagebrush communities


Of conservation concern.

Thelypodiopsis juniperorum is known only from Gunnison and Montrose counties.

Selected References


Lower Taxa