Clarkia exilis

H. Lewis & Vasek

Madroño 12: 211. 1954.

Common names: Kern River or slender clarkia
Treatment appears in FNA Volume 10.

Stems erect, 30–100 cm, glabrous, glaucous. Leaves: petiole 0–5 mm; blade bright green, lanceolate to narrowly elliptic, 1–6 cm, surfaces not glaucous, glabrous. Inflores­cences open racemes, axis erect; buds pendent. Flowers: floral-tube 1–3 mm; sepals reflexed together to 1 side, usually green, sparsely to densely puberulent inside, without longer, spreading hairs; corolla rotate, petals lavender-pink or white, often with dark purplish spot, usually diamond-shaped, 5–15 mm, claw slender, equal to or longer than blade, entire; stamens 8, unequal, outer anthers red, inner smaller, paler; ovary with hairs as on sepals; stigma subequal to anthers. Capsules 10–30 mm. Seeds brown, 1 mm, tuberculate, crest inconspicuous. 2n = 18.


Phenology: Flowering Apr–May.
Habitat: Woodlands
Elevation: 0–1000 m.

Discussion

Clarkia exilis is of limited distribution, known primarily from the southern Sierra Nevada Foothills and Tehachapi Mountain area in Kern and Tulare counties, with unverified reports from Fresno, San Luis Obispo, and Ventura counties. It is listed as rare by the California Native Plant Society.

Clarkia exilis is derived from C. unguiculata and is closely related to C. springvillensis and C. tembloriensis.

Selected References

None.

Lower Taxa

None.
... more about "Clarkia exilis"
Harlan Lewis† +  and Peter C. Hoch +
H. Lewis & Vasek +
Phaeostoma spach +
indehiscent +  and loculicidal +
bright green +
denticulate +  and entire +
lanceolate +  and narrowly elliptic +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
subsessile +  and long-pedicellate +
curved +  and straight +
indehiscent +  and loculicidal +
subclavate +, subfusiform +  and cylindrical +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
elongated +
slender +
Kern River or slender clarkia +
inconspicuous +
0–1000 m. +
basifixed +  and versatile +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
campanulate +  and obconic +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
actinomorphic +
not +  and protandrous +
pedicellate +  and sessile +
curved +  and straight +
indehiscent +  and loculicidal +
terete +, 4-angled +, clavate +, fusiform +, cylindrical +  and elongate +
Woodlands +
unicellular-papillose +
deciduous +
numerous +  and 1 +
white +  and lavender-pink +
diamond--shaped +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Flowering Apr–May. +
red +, lavender +, blue-gray +, yellow +  and cream +
basal +  and cauline +
several +  and 1 +
clavate +  and globose +
few +  and numerous +
tuberculate +
1 cm10 mm <br />0.01 m <br /> (?) +
deciduous +
0 +  and 1 +
parenchymatous +
parietal +, axile +  and placentation +
1 +, 4 +  and 2 +
unequal +
aquatic +, amphibious +  and terrestrial +
dark purplish +
unequal +
2 times as many or as many as sepals +
unbranched +  and sparsely branched +
decumbent +  and prostrate +
glaucous +  and glabrous +
slender +  and stout +
30 cm300 mm <br />0.3 m <br /> (100 cm1,000 mm <br />1 m <br />) +
subequal +
petiolate +  and sessile +
intrapetiolar +
aquatic +, amphibious +  and terrestrial +
glabrous +  and not glaucous +
Gauropsis c. +
Clarkia exilis +
Clarkia subsect. Phaeostoma +
species +
3(-5)-aperturate +
short-acute +
smooth +  and erose +
papillate +
purplish red +