Clarkia gracilis subsp. albicaulis
Clarkia gracilis
white stem clarkia
graceful clarkia, slender clarkia, slender godetia
erect, to 90 cm, glabrous or puberulent.
petiole to 11 mm;
blade linear to narrowly lanceolate, 2–7 cm.
racemes, axis recurved at tip in bud;
buds pendent.
petals pinkish lavender to light purple shading to white near middle, base bright red, 30–40 mm;
stigma exserted beyond anthers.
floral tube 1.5–10 mm;
corolla bowl-shaped, petals pink to lavender or light purple, often lighter toward base, unspotted or with red spot near middle or base, obovate or obdeltate, 6–40 mm;
stamens 8, subequal;
ovary 4-grooved, puberulent;
stigma exserted or not beyond anthers.
25–50 mm, usually wider distally;
pedicel 0–10 mm.
brown or mottled with dark spots, 1.5–2 mm, scaly, crest 0.1 mm.
= 28.
Clarkia gracilis subsp. albicaulis
Clarkia gracilis
Subspecies albicaulis is found in foothill woodlands around the upper Sacramento Valley, mainly in Butte, Colusa, Lake, and Tehama counties, less commonly in Lassen, Mariposa, Modoc, Shasta, and Solano counties.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 4 (4 in the flora).
Clarkia gracilis is a tetraploid derived from C. amoena and an unknown, presumably extinct, species related to C. arcuata and C. lassenensis. Clarkia gracilis is readily distinguished from C. amoena by the axis of the inflorescence in bud, which is not recurved in C. amoena; it is distinguished from C. arcuata and C. lassenensis by its four rather than eight-grooved ovary.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stigmas not exserted beyond anthers; petals 6–23 mm. | subsp. gracilis |
1. Stigmas exserted beyond anthers; petals20–40 mm. | → 2 |
2. Petals with red spot near mid blade, base of blades white. | subsp. sonomensis |
2. Petals unspotted, base of blades red or bright red. | → 3 |
3. Petals 20–30 mm. | subsp. tracyi |
3. Petals 30–40 mm. | subsp. albicaulis |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
OR
WA
Flora NW
PNW Herbaria
