Flora of North America species comparison

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Clarkia virgata

Clarkia breweri

clarkia, Sierra clarkia

Brewer's clarkia, fairy fans
Stems

erect, to 100 cm, puberulent.

erect or decumbent, to 20 cm, glabrous or sparsely puberulent.
Leaves

petiole 15–50 mm;

blade elliptic to ovate, 2–5 cm.

petiole to 20 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.

racemes, axis straight or recurved;

buds pendent.
Flowers

floral tube 2–4 mm;

sepals reflexed individually;

corolla rotate, petals lavender-purple, mottled or spotted with reddish purple, ± rhombic, unlobed, 7–14 × 3–7 mm, length 1.9–3 times width;

stamens 8, subequal, subtended by ciliate scales, pollen blue-gray;

ovary shallowly 4-grooved;

stigma not or rarely exserted beyond anthers.

floral tube 20–35 mm;

sepals reflexed together to 1 side, not petal-like, green to magenta;

corolla rotate, petals pink, broadly fan-shaped, 15–25 mm, length equal to width, without claw, 3-lobed, middle lobe longer and much narrower, linear to oblanceolate;

stamens 4, filaments wider distally;

ovary inconspicuously grooved;

stigma exserted beyond anthers.
Capsules

10–20 mm;

pedicel 1–4 mm.

15–40 mm;

subsessile.
Seeds

brown or gray, 1–1.5 mm, scaly-echinate, crest 0.1 mm.

reddish brown, 2–3 mm, scaly-tuberculate, crest to 0.8 mm, conspicuous.
2n

= 10.

= 14.

Clarkia virgata

Clarkia breweri
Phenology Flowering Jun–Jul. Flowering Apr–Jun.
Habitat Yellow-pine forests, foothill woodlands. Woodlands, chaparral.
Elevation 400–1100 m. (1300–3600 ft.) 0–1000 m. (0–3300 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Clarkia virgata is known primarily from El Dorado to Tuolumne counties in the north-central Sierra Nevada range, with scattered collections to Mariposa and Yuba counties.

Clarkia virgata is very similar to C. mosquinii and C. australis and is probably derived from the former through chromosome reduction in number and rearrangement and may be ancestral to the latter, which differs in chromosome arrangement. Experimental hybrids in all combinations have very low fertility. The three species are difficult to distinguish morphologically but replace one another ecogeographically with C. australis in the south and C. virgata in the middle with non-overlapping distributions. Other than geographical distribution, C. virgata is usually distinguishable from C. mosquinii by having narrower petal blades and from C. australis by having broader leaves.

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

Clarkia breweri is restricted to dry woodlands and chaparral west of the Central Valley from the San Francisco Bay area into the southern Coast Ranges in Fresno, Monterey, and San Benito counties.

(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. Myxocarpa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Eucharidium
Sibling taxa
C. affinis, C. amoena, C. arcuata, C. australis, C. biloba, C. borealis, C. bottae, C. breweri, C. concinna, C. cylindrica, C. davyi, C. delicata, C. dudleyana, C. epilobioides, C. exilis, C. franciscana, C. gracilis, C. heterandra, C. imbricata, C. jolonensis, C. lassenensis, C. lewisii, C. lingulata, C. mildrediae, C. modesta, C. mosquinii, C. prostrata, C. pulchella, C. purpurea, C. rhomboidea, C. rostrata, C. rubicunda, C. similis, C. speciosa, C. springvillensis, C. stellata, C. tembloriensis, C. unguiculata, C. williamsonii, C. xantiana
C. affinis, C. amoena, C. arcuata, C. australis, C. biloba, C. borealis, C. bottae, C. concinna, C. cylindrica, C. davyi, C. delicata, C. dudleyana, C. epilobioides, C. exilis, C. franciscana, C. gracilis, C. heterandra, C. imbricata, C. jolonensis, C. lassenensis, C. lewisii, C. lingulata, C. mildrediae, C. modesta, C. mosquinii, C. prostrata, C. pulchella, C. purpurea, C. rhomboidea, C. rostrata, C. rubicunda, C. similis, C. speciosa, C. springvillensis, C. stellata, C. tembloriensis, C. unguiculata, C. virgata, C. williamsonii, C. xantiana
Synonyms Eucharidium breweri
Name authority Greene: Erythea 3: 123. (1895) (A. Gray) Greene: Pittonia 1: 141. (1887)
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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