Difference between revisions of "Clarkia stellata"
Leafl. W. Bot. 9: 215. 1962.
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|subfamily=Onagraceae subfam. Onagroideae | |subfamily=Onagraceae subfam. Onagroideae | ||
|tribe=Onagraceae tribe Onagreae | |tribe=Onagraceae tribe Onagreae |
Latest revision as of 10:32, 9 May 2022
Stems erect, to 100 cm, puberulent. Leaves: petiole 5–30 mm; blade lanceolate to elliptic or ovate, 1–5 cm. Inflorescences open racemes, axis in bud recurved 1–3 nodes distal to open flowers; buds pendent, narrowly obovoid, tip acute. Flowers: floral tube 1.5–2 mm; sepals reflexed individually; corolla rotate, petals lavender-purple, not dark-flecked or spotted, obovate, 6–8 × 3–5 mm, inconspicuously 3-lobed; stamens 8, subequal, subtended by ciliate scales, pollen yellow; ovary shallowly 4-grooved, puberulent; stigma not exserted beyond anthers. Capsules 20–25 mm; pedicel 1–3 mm. Seeds unknown. 2n = 14.
Phenology: Flowering Jun–Jul.
Habitat: Open coniferous forests.
Elevation: 1000–1500 m.
Discussion
Clarkia stellata is known from the southern Cascade–northern Sierra Nevada region, including Lassen, Nevada, Plumas, Shasta, Sierra, and Tehama counties (with unverified reports from Butte and Modoc counties).
Clarkia stellata is probably a self-pollinating derivative of C. mildrediae subsp. lutescens, to judge from pollen color. The two species are readily distinguishedby the much smaller flowers of C. stellata and the position of the stigma. Hybrids have low fertility due to chromosomal rearrangement. Clarkia stellata is morphologically very similar to the self-pollinating tetraploid C. rhomboidea but can be distinguished from it by yellow pollen and shallowly lobed, unspotted petals.
Selected References
None.