Flora of North America species comparison

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Clarkia springvillensis

Clarkia virgata

Springville clarkia

clarkia, Sierra clarkia
Stems

erect, 30–90 cm, glabrous, glaucous.

erect, to 100 cm, puberulent.
Leaves

petiole 0–5 mm;

blade lanceolate, 2–9 cm, surfaces glaucous, glabrous.

petiole 15–50 mm;

blade elliptic to ovate, 2–5 cm.
Inflorescences

open racemes, axis erect;

buds pendent.

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 3–4 mm;

sepals reflexed together to 1 side, usually dark red-purple, sparsely to densely puberulent abaxially, without long, spreading hairs;

corolla rotate, petals lavender-pink, usually with dark purplish spot near base, ± diamond-shaped, 13–15 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 exserted beyond anthers.

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.
Capsules

15–30 mm.

10–20 mm;

pedicel 1–4 mm.
Seeds

unknown.

brown or gray, 1–1.5 mm, scaly-echinate, crest 0.1 mm.
2n

= 18.

= 10.

Clarkia springvillensis

Clarkia virgata
Phenology Flowering May. Flowering Jun–Jul.
Habitat Woodlands. Yellow-pine forests, foothill woodlands.
Elevation 500 m. (1600 ft.) 400–1100 m. (1300–3600 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Clarkia springvillensis is a rare species known primarily from the vicinity of Springville in Tulare County, with one ambiguous collection from Kern County. Due to its very limited distribution, C. springvillensis is listed as rare by the California Native Plant Society. It is derived from C. unguiculata and is closely related to C. exilis and C. tembloriensis.

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

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.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Phaeostoma > subsect. Phaeostoma Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Myxocarpa
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. stellata, C. tembloriensis, C. unguiculata, C. virgata, C. williamsonii, C. xantiana
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
Name authority Vasek: Madroño 17: 220. (1964) Greene: Erythea 3: 123. (1895)
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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