Clarkia epilobioides
Clarkia lassenensis
canyon clarkia, willow-herb clarkia
Lassen clarkia, Lassen clarkia or godetia, Mount Lassen godetia, Mt. Lassen clarkia, Mt. Lassen fairy-fan
erect, 20–70 cm, sparsely puberulent.
erect, to 90 cm, puberulent.
petiole to 7 mm;
blade linear to narrowly lanceolate or oblanceolate, 1.5–2.5 cm.
petiole to 10 mm;
blade linear to narrow lanceolate, 2–5 cm.
open racemes, sometimes few-branched, axis recurved at tip in bud;
buds pendent.
racemes, axis recurved at tip in bud;
buds pendent.
usually cleistogamous;
floral tube 1–3 mm;
sepals reflexed together to 1 side or in pairs;
corolla bowl-shaped, petals fading pink, obovate;
stamens 8, unequal, anthers white or cream, outer ones larger than inner.
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.
10–30 mm;
pedicel 5–11 mm.
25–40 mm;
pedicel 0–3 mm.
brown, 0.5–1 mm, scaly, crest inconspicuous.
light brown or mottled with dark spots, 1.5 mm, minutely tuberculate, crest 0.2 mm.
= 18.
= 14.
Clarkia epilobioides
Clarkia lassenensis
Clarkia epilobioides is known from south-central Arizona in Gila, Maricopa, Pima, and Pinal counties, and widely in west-central and southwestern California and adjacent Baja California, Mexico. In California, it occurs from Contra Costa and San Mateo counties in the San Francisco Bay area to San Diego County in the south, including most of the Channel Islands.
Clarkia epilobioides is modally self-pollinating, and up to half of its flowers do not open, yet set a full complement of seeds (H. Lewis and M. E. Lewis 1955). However, outcrossing does occur, and C. epilobioides is one of the parents of the tetraploid species C. similis, from which it differs by having white, unflecked petals; it is also one of the parents of the tetraploid C. delicata.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
OR
Flora NW
PNW Herbaria
