Erythronium helenae

Applegate

Contr. Dudley Herb. 1: 188. 1933.

Common names: Mount St. Helena fawn-lily
IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 160. Mentioned on page 155, 157.

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.


Phenology: Flowering spring (Mar–Apr).
Habitat: Dry woods or scrub, on serpentines
Elevation: 500–1200 m

Distribution

V26 266-distribution-map.jpg

Calif. (vicinity of Mount St. Helena)

Discussion

Selected References

None.

Lower Taxa

None.

"thicker" is not a number.

... more about "Erythronium helenae"
versatile +  and dorsifixed +
cordate +  and linear +
loculicidal +
Geraldine A. Allen +  and Kenneth R. Robertson +
Applegate +
whorled +, opposite +  and alternate +
narrowed +
reticulate-veined +  and parallel-veined +
glabrous +  and glaucous +
lanceolate +  and ovate flat +
6 cm60 mm <br />0.06 m <br /> (60 cm600 mm <br />0.6 m <br />) +
sheathing +  and involucrate +
tunicate +  and scaly +
additional +
3 cm30 mm <br />0.03 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Mount St. Helena fawn-lily +
Calif. (vicinity of Mount St. Helena) +
500–1200 m +
connate-coroniform +  and dilated +
0 cm0 mm <br />0 m <br /> (?) +  and 0.08 cm0.8 mm <br />8.0e-4 m <br /> (?) +
sessile +  and pedicellate +
fragrant +
erect +  and nodding +
unisexual +  and bisexual +
indehiscent +, septicidal +  and loculicidal +
obovoid +  and oblong +
membranaceous +  and leathery +
Dry woods or scrub, on serpentines +
persistent +
7 cm70 mm <br />0.07 m <br /> (20 cm200 mm <br />0.2 m <br />) +
recurved +  and erect +
white +  and brown +
broadly lanceolate +  and ovate +
many;several +
zygomorphic +  and actinomorphic +
Flowering spring (Mar–Apr). +
Contr. Dudley Herb. +
reddish +  and green +
elongating +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
wind-distributed +
1 +  and many +
Illustrated +  and Endemic +
many +  and few +
more sparingly without than those extensive vegetative reproduction +
adnate +  and free +
staminodial +
1 +  and several +
with lobes +  and unlobed +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Erythronium helenae +
Erythronium +
species +
pinkish;bright-yellow;white +
distinct +
spreading +  and reflexed +
lanceolate +  and ovate +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
sepaloid +  and petaloid +
narrower +
lanceolate;ovate +
3 +  and 2 +