Flora of North America species comparison

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Clarkia biloba subsp. australis

Clarkia sect. Phaeostoma
Photo is of parent taxon

mariposa clarkia
Leaf

blades linear to narrowly lanceolate, 2–6 mm wide.

Inflorescences

axis recurved or erect;

buds pendent or erect.
Flowers

corolla rotate, petals bright pink to magenta, narrowly fan-shaped, length greater than 1.5 times width, 2-lobed, lobes usually 1/5–1/3 petal length.

floral tube obconic or campanulate, 1–5(–7) mm;

sepals reflexed together to 1 side (sometimes in pairs in C. epilobioides);

petals lavender, pink purplish, or white, obovate or spatulate to fan-shaped, unlobed or rarely 2-lobed, tapering to claw;

stamens 8, unequal, outer anthers darker pink or purple, inner shorter and pale pink or cream, rarely sterile (C. heterandra);

ovary 4- or 8-grooved or ribbed, or smooth (C. heterandra).
Capsules

narrowly cylindrical or subfusiform, or rarely broadly subclavate (indehiscent, nutlike capsule in C. heterandra), 4 or 8-grooved or smooth;

sessile or subsessile to long-pedicellate.
2n

= 16.

Clarkia biloba subsp. australis

Clarkia sect. Phaeostoma
Phenology Flowering May–Jun.
Habitat Chapar-ral, woodlands.
Elevation 300–500 m. (1000–1600 ft.)
Distribution
from FNA
CA
[BONAP county map]
nw Mexico; California
Discussion

Subspecies australis is known from the foothills of the south-central Sierra Nevada, mainly in Mariposa and Tuolumne counties, less commonly in Calaveras and El Dorado counties.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Species 15 (15 in the flora).

Section Phaeostoma is the largest section in Clarkia, with the 15 species classified in seven subsections. For the most part, these correspond with groups delineated originally by H. Lewis and M. E. Lewis (1955). Within the part of the genus with dimorphic stamens (8 in 2 dissimilar sets that vary in size and color), the species of sect. Phaeostoma have entire petals that taper to a distinct claw. Even though molecular support for sect. Phaeostoma is not strong (R. A. Levin et al. 2004), at this time it seems preferable to stress similarities and maintain this variable group in one section.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Phaeostoma > subsect. Lautiflorae > Clarkia biloba Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia
Sibling taxa
C. biloba subsp. biloba, C. biloba subsp. brandegeeae
Subordinate taxa
Synonyms Phaeostoma, C.
Name authority H. Lewis & M. E. Lewis: Univ. Calif. Publ. Bot. 20: 322, fig. 17b. (1955) (Spach) H. Lewis & M. E. Lewis: Univ. Calif. Publ. Bot. 20: 338. (1955)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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