Jepson eFlora
Key to families | Table of families and genera

Key to Calyptridium

View taxon page for Calyptridium

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Perennial herb; style thread-like, 2–4 mm, exserted

2. Inflorescence >= 2 per rosette; cauline leaves generally present; petals rose to white ..... C. monospermum

2' Inflorescence generally 1 per rosette; cauline leaves generally 0; petals white ..... C. umbellatum

1' Annual; style thread-like or not, generally < 2 mm, generally included

3. Style 1–2 mm; seeds 1–3, 0.7–0.9 mm; c Sierra Nevada ..... C. pulchellum

3' Style < 0.5 mm; seeds >= 4, 0.4–0.8 mm; widespread, including e slope High Sierra Nevada (for C. roseum) but otherwise excluding c Sierra Nevada (except Calyptridium pygmaeum is in c&s High Sierra Nevada)

4. Seed < 0.5 mm, papillae generally 0 or marginal; pedicel 1–3 mm, slender

5. Petals 4; stamens generally 3 ..... C. pygmaeum

5' Petals 2; stamen 1 ..... C. roseum

4' Seed >= 0.5 mm, papillae marginal or throughout (except 0 in Calyptridium arizonicum); pedicel < 2 mm, thickened (slender, 1–2 mm in Calyptridium quadripetalum)

6. Petals generally 3; stamen 1; fruit oblong to linear; seeds 4–10, generally from base to above middle of fruit, often in ± 1 row ..... C. monandrum

6' Petals 4; stamens 1–3; fruit widely ovate or lanceolate to elliptic or oblong; seeds 5–many, generally from base to middle of fruit, not in ± 1 row

7. Seed papillae coarse, generally throughout; basal leaves generally persistent in fruit; flowers deciduous in fruit; sepals scarious throughout ..... C. quadripetalum

7' Seed papillae 0 or ± fine, throughout or marginal; basal leaves generally withering in fruit; flowers persistent in fruit to not; sepals generally scarious on margin or becoming scarious throughout

8. Seed 0.7–0.8 mm, papillae 0; fruit 6–7 mm; w Sonoran Desert ..... C. arizonicum

8' Seed generally 0.5–0.7 mm, papillae throughout or marginal; fruit < 6 mm; sw San Francisco Bay Area, n South Coast Ranges, s Outer South Coast Ranges, Transverse Ranges, San Jacinto Mountains, East of Sierra Nevada, Desert Mountains ..... C. parryi

9. Seed papillae throughout; s Outer South Coast Ranges, Transverse Ranges, San Jacinto Mountains ..... var. parryi

9' Seed papillae marginal; sw San Francisco Bay Area, n South Coast Ranges, East of Sierra Nevada, Desert Mountains

10. Seed 0.5–0.6 mm; sepals ovate, with generally narrowly scarious margin; 600–1050 m, sw San Francisco Bay Area, n South Coast Ranges ..... var. hesseae

10' Seed 0.6–0.7 mm; sepals ovate to reniform, with widely scarious margin or scarious throughout; 1500–2990 m, East of Sierra Nevada, Desert Mountains ..... var. nevadense

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