Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Lilium

View taxon page for Lilium

(For a list of species in Lilium, use the above link.)

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

1. Flower nodding (between pendent and spreading) to perianth parts  but not  (except Lilium maritimum)

2. Perianth ± white, often aging pink, lavender, or purple; flowers nodding to erect

3. Perianth parts 4.2–6.6 cm; flower  to erect; NW, SnFrB ..... L. rubescens

3' Perianth parts generally 6.2–11.3 cm; flower nodding to ascending; KR, CaR, SN ..... L. washingtonianum

4. Perianth aging deep pink or lavender; perianth generally 6.2–9.5 cm; KR ..... subsp. purpurascens

4' Perianth aging ± white (light pink); perianth 7.9–11.3 cm; KR, CaR, SN ..... subsp. washingtonianum

2' Perianth yellow to red or pink; flowers nodding to ascending

5. Perianth bright yellow, parts 7.7–10.7 cm; TR, PR ..... L. parryi

5' Perianth ± red, orange, or pink (pale yellow), parts <= 5 cm; s NCo, KR, n&c SNH, n CCo

6. Leaf 1.8–7 cm, generally glaucousmargins generally wavy; dry places; KR ..... L. bolanderi

6' Leaf 3–18 cm, not obviously glaucous, margins generally not wavy; ± wet or seasonally inundated places; s NCo, n&c SNH, n CCo

7. Perianth red or red-orange abaxially, adaxially (except base green), tips reflexed or rolled; flower nodding (spreading); fruit 2.4–4.1 cm; s NCo, n CCo ..... L. maritimum

7' Perianth light orange to red (± pink) on distal 40%, lighter near base, sometimes uniformly light orange (yellow), abaxially paler, tips ± recurved; flower nodding to ascending; fruit 1.5–2.7 cm; n&c SNH ..... L. parvum

1' Flower pendent (sometimes some nodding); perianth parts reflexed

8. Perianth pink to white, generally aging pink, midribs yellow – KR, n NCoRO ..... L. kelloggii

8' Perianth yellow to red

9. Plant of ± dry places; perianth yellow or orange; bulb erect to ascending

10. Pistil 2.4–3.7 cm; perianth parts 3.4–7.1 cm; anthers 5–13 mm; nw NW ..... L. columbianum

10' Pistil 4.5–7.1 cm; perianth parts generally 5.6–9.5 cm; anthers 11–19 mm; s CaRH, n SNH, s CW, SW ..... L. humboldtii

11. Perianth orange, red spots unmargined; s CaRH, SNH ..... subsp. humboldtii

11' Perianth yellow or light orange, red spots near tip margined with lighter red; s CW, SW ..... subsp. ocellatum

9' Plant of ± moist places; perianth yellow to ± red; bulb 

12. Perianth ± uniformly yellow, orange, or yellow-orange (green at base)

13. Flower ± fragrant; anthers 3–6 mm, magenta or dull red; pistil 2.5–3.5 cm; fruit 1.5–3 cm; not clonal; c&s SNH ..... L. kelleyanum

13' Flower not fragrant; anthers 5–13 mm, pale yellow; pistil 3–4.3 cm; fruit 2.3–4.2 cm; ± clonal; e KR ..... L. pardalinum subsp. wigginsii

12' Perianth ± 2-toned, with green, yellow, or orange centers, darker orange or red tips

14. Perianth red to maroon (orange), center green to yellow, abaxially green on  40–50%, parts 4.3–8.1 cm; filaments ± parallel;  unbranched; n NCo ..... L. occidentale

14' Perianth yellow to orange, tips redder, abaxially green only on basal ± 20%, parts 3.4–10.4 cm; filaments not parallel; rhizome often branched; CA-FP ..... L. pardalinum (most)

15. Perianth parts 5.9–10.4 cm; generally in large clones; anthers 11–22 mm, leaves generally ± ; CA-FP ..... subsp. pardalinum

15' Perianth parts 3.4–8.3 cm; generally in small clones; anthers 5–18 mm, leaves generally ± elliptic to ± ; KR, s NCoRO, CaR, n SNH

16. Leaf ± linear, length 7–34 × width; w KR ..... subsp. vollmeri

16' Leaf ± elliptic, length 3–17 × width; e KR and elsewhere

17. Pollen red- or brown-orange; anthers magenta; s NCoRO ..... subsp. pitkinense

17' Pollen generally yellow to bright orange (red-orange); anthers orange to magenta; KR, CaR, n SNH ..... subsp. shastense


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