Jepson eFlora
Key to families | Table of families and genera

Key to Polemonium

View taxon page for Polemonium

1. Annual; flowers 1–2 in axils ..... P. micranthum

1' Perennial herb; flowers generally clustered at stem tips

2. Leaflets 2–5-lobed; inflorescence a dense, rounded head

3. Style included; petiole base generally not membranous ..... P. eximium

3' Style slightly or much exserted; petiole base membranous

4. Calyx lobes acuminate; pistil 5–10 mm, style slightly exserted; petioles 1–5 cm ..... P. chartaceum

4' Calyx lobes rounded; pistil 10.3–13.8 mm, style much exserted; petioles 0.5–1 cm ..... P. eddyense

2' Leaflets entire; inflorescence various but not head-like

5. Plant not cespitose, stems generally solitary, erect, 40–100 cm; leaves cauline

6. Corolla lobes generally white to pale pink to rarely purple (often purple on herbarium specimens); leaflets elliptic ..... P. carneum

6' Corolla lobes purple to generally blue; leaflets lanceolate ..... P. occidentale

5' Plant cespitose, stems clumped or tufted, decumbent to erect, 5–25 cm; leaves ± basal

7. Terminal leaflet ± fused with adjacent pair; corolla limb 7–15 mm diam; dry, open to shaded areas in montane forest ..... P. californicum

7' Terminal leaflet generally free from adjacent pair; corolla limb 5–11 mm diam; subalpine to alpine talus ..... P. pulcherrimum

8. Corolla lobes blue to purple; herbage sparsely glandular-hairy ..... var. pulcherrimum

8' Corolla lobes white, generally with pink veins or tinge (individual flowers or plants rarely without pink); herbage densely glandular-hairy ..... var. shastense


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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