Clarkia lassenensis
Clarkia speciosa
Lassen clarkia, Lassen clarkia or godetia, Mount Lassen godetia, Mt. Lassen clarkia, Mt. Lassen fairy-fan
red spotted clarkia, red spotted or redspot clarkia, redspot clarkia
erect, to 90 cm, puberulent.
erect or decumbent, to 60 cm, puberulent.
petiole to 10 mm;
blade linear to narrow lanceolate, 2–5 cm.
petiole 0–5 mm;
blade linear to lanceolate, 1–6 cm.
racemes, axis recurved at tip in bud;
buds pendent.
open or dense racemes or panicles, axis straight;
buds erect.
floral tube 3–5 mm;
corolla bowl-shaped, petals pinkish lavender shading lighter proximally, with reddish purple base, broadly obovate, 8–16 mm;
stamens 8, subequal;
ovary 8-grooved, densely puberulent;
stigma not exserted beyond anthers.
floral tube 5–15 mm;
sepals usually reflexed individually or in pairs, or rarely together to one side, tips not distinct in bud;
corolla bowl-shaped, petals lavender to wine-red, often shading white or pale yellow toward base, unspotted or with bright red or purplish red spot near or proximal to middle, 10–25 mm;
stamens 8, subequal;
ovary 8-grooved;
stigma exserted beyond anthers.
25–40 mm;
pedicel 0–3 mm.
15–20 mm.
light brown or mottled with dark spots, 1.5 mm, minutely tuberculate, crest 0.2 mm.
brown or gray, 0.7–1 mm, scaly, crest 0.1 mm.
= 14.
Clarkia lassenensis
Clarkia speciosa
Clarkia lassenensis is found primarily in the northeastern counties of California, south-central counties of Oregon, and northwestern counties of Nevada, with a few outlier collections from Alpine and Placer counties in the Sierra Nevada, and from northern Mendocino and Glenn counties in the North Coast Ranges.
Clarkia lassenensis is morphologically most similar to C. arcuata and C. gracilis. At one time, C. lassenensis was considered a probable parent of the tetraploid C. gracilis but cytogenetic and molecular sequence data indicate that an unknown related species, presumably now extinct, was involved. Clarkia lassenensis can be distinguished readily from C. arcuata by flower size, position of the stigma, and pubescence of the immature capsule, and from C. gracilis by having immature capsules with eight grooves rather than four.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 4 (4 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Petals without red or purplish red spot. | → 2 |
2. Stems erect to decumbent; petals dark purplish red to lavender, ± white or pale yellow near base, rarely pale yellow throughout. | subsp. speciosa |
2. Stems decumbent; petals lavender to pink shading pale yellow or white in proximal 1/2. | subsp. immaculata |
1. Petals with bright red or purplish red spot near or proximal to middle. | → 3 |
3. Inflorescences dense racemes. | subsp. nitens |
3. Inflorescences open racemes or panicles. | → 4 |
4. Petals usually with bright red spot; branches on well-developed plants many, few-flowered. | subsp. speciosa |
4. Petals with purplish red spot; branches on well-developed plants virgate, few, many- flowered. | subsp. polyantha |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
