Clarkia australis

E. Small

Canad. J. Bot. 49: 1216, fig. 4D. 1971.

Common names: Small’s southern clarkia
Synonyms: Clarkia virgata var. australis (E. Small) D. W. Taylor
Treatment appears in FNA Volume 10.

Stems erect, to 100 cm, puber­ulent. Leaves: petiole 10–30 mm; blade linear to lanceolate, 2–5 cm. Inflorescences open racemes, axis recurved only at tip in bud, straight 4+ nodes distal to open flowers; buds pendent, narrowly obovoid, tip obtuse. Flowers: floral-tube 2–4 mm; sepals reflexed individually; corolla rotate, petals lavender-purple, mottled or spotted reddish purple, ± rhombic, unlobed, 6–12 (–14) ×3–7 mm, length 2.2–3 times width; stamens 8, sub­equal, subtended by ciliate scales, pollen blue-gray; ovary shallowly 4-grooved; stigma exserted beyond anthers. Capsules 10–20 mm; pedicel 0–4 mm. Seeds brown, 1–1.5 mm, scaly. 2n = 10.


Phenology: Flowering Jun–Jul.
Habitat: Yellow-pine forests.
Elevation: 800–1500 m.

Discussion

Clarkia australis is found in the foothills of the cen­tral Sierra Nevada range, from Calaveras, Madera, Mari­posa, and Tuolumne counties, and has been designated as rare by the California Native Plant Society.

Clarkia australis is morphologically very similar to C. virgata and, based on its more southern distribution, may be derived from it. They are most readily distinguished morphologically by the narrower leaves of C. australis.

Selected References

None.

Lower Taxa

None.
... more about "Clarkia australis"
Harlan Lewis† +  and Peter C. Hoch +
E. Small +
straight +
indehiscent +  and loculicidal +
denticulate +  and entire +
linear +  and lanceolate +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
obovoid +
pedicellate +  and sessile +
curved +  and straight +
indehiscent +  and loculicidal +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
elongated +
Small’s southern clarkia +
800–1500 m. +
basifixed +  and versatile +
campanulate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
actinomorphic +
protandrous +  and bisexual +
pedicellate +  and sessile +
curved +  and straight +
indehiscent +  and loculicidal +
terete +, 4-angled +, clavate +, fusiform +, cylindrical +  and elongate +
Yellow-pine forests. +
unicellular-papillose +
deciduous +
subterete +
numerous +  and 1 +
0 cm0 mm <br />0 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
spotted reddish +, mottled +  and lavender-purple +
6mm +  and 12mm +
unlobed +  and rhombic +
constricted +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jun–Jul. +
Canad. J. Bot. +
basal +  and cauline +
several +  and 1 +
clavate +  and globose +
few +  and numerous +
sculptured +  and smooth +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
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 +
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 virgata var. australis +
Clarkia australis +
Clarkia sect. Myxocarpa +
species +
3(-5)-aperturate +
obtuse +
smooth +  and erose +
papillate +