Lilium washingtonianum subsp. purpurascens

(Stearn) M. W. Skinner

Novon 12: 258. 2002.

Common names: Cascade lily
Endemic
Basionym: Lilium washingtonianum var. purpurascens Stearn Gard. Chron., ser. 3, 124: 13. 1948 Lilium washingtonianum var. purpureum (Purdy) Purdy 1919
Synonyms: Lilium purpureum
Treatment appears in FNA Volume 26. Treatment on page 183. Mentioned on page 182, 185.

Bulbs variable, subrhizomatous to ± ovoid, 3–10 × 4.4–11.7 cm, 0.3–0.9 (–1.4) times taller than long; scales variable, usually notched with 2 (–3) poorly defined segments, some clearly 2-segmented or unsegmented, longest 3.3–11.9 cm. Stems to 1.7 m. Leaves in 1–8 whorls or partial whorls, 3–15 leaves per whorl, usually ascending and occasionally nearly clasping stem, rarely horizontal and drooping at tips, 3.7–12.3 × 0.9–4.7 cm, 2–6.5 times longer than wide; margins undulate. Flowers: sepals and petals recurved 2/3 along length from base, mostly or entirely white but aging deep pink or lavender, sometimes with short yellowish stripe extending from basal median nectaries; sepals usually if obscurely purplish adaxially, (6.1–) 6.7–9.5 × 0.9–1.6 cm; petals (6.1–) 6.6–9.5 × 1.1–1.9 cm; anthers cream, sometimes spotted minutely with magenta on abaxial surface, becoming yellow; pollen pale-yellow to occasionally yellow. Capsules usually with 6 longitudinal ridges, 2.8–5.8 × 1.6–2.9 cm, 1.3–2.3 times longer than wide. Seeds 144–231.2n = 24.


Phenology: Flowering summer (mid Jun–mid Aug).
Habitat: Forest openings, chaparral, burned clearcuts, roadsides
Elevation: 300–1700 m

Discussion

Subspecies purpurascens replaces the Sierran subsp. washingtonianum near Mount Shasta in Siskiyou County, California, and extends west through the Klamath Mountains and north through the Cascade ranges to Mount Hood in Clackamas County, Oregon. In addition to the characters mentioned in the key, subsp. purpurascens is also distinguished from subsp. washingtonianum by more compact bulbs with longer scales.

Selected References

None.

Lower Taxa

None.

"wide" is not a number."longest" is not a number."thicker" is not a number.

yellow +, spotted +  and cream +
0.3 cm3 mm <br />0.003 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
Rounded (?) +, Obtuse (?) +  and Acute (?) +
Mark W. Skinner +
(Stearn) M. W. Skinner +
whorled +, opposite +  and alternate +
visible +, exposed +  and hidden +
loculicidal +
dilated +
constricted +
Lilium washingtonianum var. purpurascens +  and Lilium washingtonianum var. purpureum +
reticulate-veined +  and parallel-veined +
paler +  and green and somewhat lighter +
obovate +  and oblanceolate +
contractile +  and branching +
stained brown +, purplish +, yellowish +  and whitish +
0.3-0.9(-1.4) times taller than long +
3cm +  and 10cm +
slanted +  and erect +
chunky +
4.4 cm44 mm <br />0.044 m <br /> (11.7 cm117 mm <br />0.117 m <br />) +
2.8 cm28 mm <br />0.028 m <br /> (5.8 cm58 mm <br />0.058 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
Cascade lily +
Calif. +  and Oreg. +
300–1700 m +
yellowish stripe +
translucent +, pale green +  and variable +
diverging +  and spreading +
connate-coroniform +  and dilated +
sessile +  and pedicellate +
diverging +  and spreading +
fragrant +
unisexual +  and bisexual +
winged +, 3-valved +  and capsular +
brown;green +
indehiscent +, septicidal +  and loculicidal +
1.5cm;7.7cm +
oblong-obovate +
membranaceous +  and leathery +
0.8 cm8 mm <br />0.008 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
Forest openings, chaparral, burned clearcuts, roadsides +
scattered +  and distributed +
persistent +
3.7cm;12.3cm +
0.9 cm9 mm <br />0.009 m <br /> (4.7 cm47 mm <br />0.047 m <br />) +
papillose +  and smooth +
undulate +
1.7 cm17 mm <br />0.017 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
not articulate +
4.8 cm48 mm <br />0.048 m <br /> (15 cm150 mm <br />0.15 m <br />) +
zygomorphic +  and actinomorphic +
campanulate +
overlapping +
6.1 cm61 mm <br />0.061 m <br /> (6.6 cm66 mm <br />0.066 m <br />) +
Lavender (?) +, Pink (?) +, Deep (?) +, Aging (?) +  and White (?) +
distinct +
6.6 cm66 mm <br />0.066 m <br /> (9.5 cm95 mm <br />0.095 m <br />) +
differentiated +
1.1 cm11 mm <br />0.011 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
Flowering summer (mid Jun–mid Aug). +
oblong +  and 3-lobed +
7.5 cm75 mm <br />0.075 m <br /> (10.4 cm104 mm <br />0.104 m <br />) +
pale-yellow +  and occasionally yellow +
wrinkled +
thinner +  and thick +
2-segmented +  and notched +
3.3 cm33 mm <br />0.033 m <br /> (11.9 cm119 mm <br />0.119 m <br />) +
starchy +  and fleshy +
abscission +
144 +  and 231 +
verrucose +
wedge +  and flattened +
overlapping +
6.1 cm61 mm <br />0.061 m <br /> (6.7 cm67 mm <br />0.067 m <br />) +
purplish +, lavender +, pink +, deep +, aging +  and white +
distinct +
ridged +  and clawed +
differentiated +
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
adnate +  and free +
0 cm0 mm <br />0 m <br /> (170 cm1,700 mm <br />1.7 m <br />) +
1 +  and several +
elongating +
3 (?) +  and 1 (?) +
Lilium purpureum +
Lilium washingtonianum subsp. purpurascens +
Lilium washingtonianum +
subspecies +
connate +  and distinct +
at tips +  and ascending +
sepaloid +  and petaloid +
narrower +
3 +  and 15 +