Flora of North America species comparison

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Erythronium helenae

Mount St. Helena fawn-lily, Pacific fawnlily, St. Helena fawn lily
Bulbs

ovoid, 30–55 mm, sometimes producing sessile bulbels.
Leaves

7–20 cm;

blade mottled with irregular streaks of brown or white, broadly lanceolate to ovate, margins ± wavy.
Scape

12–30 cm.
Inflorescences

1–3-flowered.
Flowers

fragrant;

tepals ± white, bright yellow at base, pinkish in age, lanceolate to ovate, 25–40 mm, inner with small auricles at base;

stamens 8–13 mm;

filaments ± yellow, linear, ± slender, less than 0.8 mm wide;

anthers yellow;

style ± white, often bent to one side, 5–8 mm;

stigma unlobed or with lobes shorter than 1 mm.
Capsules

obovoid, 2–4 cm.
2n

= 24.

Erythronium helenae
Phenology Flowering spring (Mar–Apr).
Habitat Dry woods or scrub, on serpentines
Elevation 500–1200 m (1600–3900 ft)
Distribution
from USDA
Calif (vicinity of Mount St Helena)
[BONAP county map]
Source FNA vol. 26, p. 160.
Parent taxa Liliaceae > Erythronium
Sibling taxa
E. albidum, E. americanum, E. californicum, E. citrinum, E. elegans, E. grandiflorum, E. hendersonii, E. klamathense, E. mesochoreum, E. montanum, E. multiscapideum, E. oregonum, E. pluriflorum, E. propullans, E. purpurascens, E. pusaterii, E. quinaultense, E. revolutum, E. rostratum, E. taylorii, E. tuolumnense, E. umbilicatum
Name authority Applegate: Contr. Dudley Herb. 1: 188. (1933)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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