Clarkia stellata

Mosquin

Leafl. W. Bot. 9: 215. 1962.

Common names: Lake Amador clarkia
Treatment appears in FNA Volume 10.

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.

Lower Taxa

None.
... more about "Clarkia stellata"
Harlan Lewis† +  and Peter C. Hoch +
Mosquin +
erect +  and recurved +
1 +  and 3 +
indehiscent +  and loculicidal +
denticulate +  and entire +
lanceolate +  and elliptic or ovate +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
pendent +  and recurved +
obovoid +
pedicellate +  and sessile +
curved +  and straight +
indehiscent +  and loculicidal +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
elongated +
Lake Amador clarkia +
1000–1500 m. +
basifixed +  and versatile +
campanulate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
protandrous +  and bisexual +
pedicellate +  and sessile +
curved +  and straight +
indehiscent +  and loculicidal +
terete +, 4-angled +, clavate +, fusiform +, cylindrical +  and elongate +
Open coniferous forests. +
unicellular-papillose +
deciduous +
subterete +
numerous +  and 1 +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
spotted +, not dark-flecked +  and lavender-purple +
6mm +  and 8mm +
3-lobed +  and obovate +
constricted +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jun–Jul. +
Leafl. W. Bot. +
basal +  and cauline +
several +  and 1 +
clavate +  and globose +
few +  and numerous +
sculptured +  and smooth +
pink +  and purplish red +
deciduous +
0 +  and 1 +
parenchymatous +
parietal +, axile +  and placentation +
1 +, 4 +  and 2 +
unequal +
aquatic +, amphibious +  and terrestrial +
subequal +
2 times as many or as many as sepals +
unbranched +  and sparsely branched +
decumbent +  and prostrate +
puberulent +
slender +  and stout +
0 cm0 mm <br />0 m <br /> (100 cm1,000 mm <br />1 m <br />) +
petiolate +  and sessile +
intrapetiolar +
aquatic +, amphibious +  and terrestrial +
Clarkia stellata +
Clarkia sect. Myxocarpa +
species +
3(-5)-aperturate +
smooth +  and erose +
papillate +