Flora of North America species comparison

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Clarkia imbricata

Clarkia davyi

Vine Hill clarkia

Davy's clarkia, Davy's fairyfan, davyi's clarkia
Stems

erect, to 60 cm, glabrous or sparsely puberulent.

prostrate or decumbent, to 90 cm, sparsely puberulent.
Leaves

petiole 0–2 mm;

blade lanceolate, 2–2.5 cm.

sessile or subsessile;

blade oblanceolate to broadly elliptic or obovate, 1–2.5 cm, apex usually obtuse.
Inflorescences

dense racemes, axis straight;

buds erect.

open racemes, axis straight;

buds erect.
Flowers

floral tube 10–15 mm, conspicuously veined, lavender striate within;

sepals reflexed individually;

corolla bowl-shaped, petals lavender shading to white proximally, with large, wedge-shaped purplish red spot near apex, 20–25 mm;

stamens 8, subequal;

ovary 8-grooved, longer than adjacent internode;

stigma exserted beyond anthers.

floral tube 2–5 mm;

sepals reflexed in pairs or individually;

corolla bowl-shaped, petals lavender-pink shading white or pale yellow basally, unspotted, 5–11 mm;

stamens 8, subequal;

ovary 8-grooved;

stigma not exserted beyond anthers.
Capsules

10–15 mm.

15–25 mm.
Seeds

brown or gray, 2 mm, scaly, crest 0.2 mm.

brown or gray, 1 mm, scaly, crest inconspicuous.
2n

= 16.

= 34.

Clarkia imbricata

Clarkia davyi
Phenology Flowering Jun–Jul. Flowering Apr–Jun.
Habitat Clearings, roadsides, chaparral. Grasslands, low sea bluffs.
Elevation 50 m. (200 ft.) 0–100 m. (0–300 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Clarkia imbricata, known from only one small area of Sonoma County, is designated as rare by the California Native Plant Society, and is in the Center for Plant Conservation’s National Collection of Endangered Plants; it is a relict of a lineage with 2n = 16 that presumably contributed a genome to the tetraploid species C. davyi and the South American C. tenella.

Morphologically, Clarkia imbricata is most similar to C. speciosa, C. williamsonii, and some populations of C. purpurea. Clarkia imbricata can be distinguished from C. speciosa by the color pattern of the petals and from C. williamsonii and populations of C. purpurea with similar flower size and color pattern by its broader, ascending, overlapping leaves.

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

Clarkia davyi is ecologically restricted, mainly growing along the Pacific coast on bluffs and grassy stabilized sand dunes, rarely farther inland. Its range extends from Humboldt and (barely) Del Norte counties in the north through all coastal counties to Santa Barbara County in the south, including Santa Rosa Island.

Clarkia davyi is morphologically similar to the polytypic South American tetraploid C. tenella and appears to be one of the parental species of the hexaploid C. prostrata.

(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. Godetia Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Godetia
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. 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
C. affinis, C. amoena, C. arcuata, C. australis, C. biloba, C. borealis, C. bottae, C. breweri, C. concinna, C. cylindrica, 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 Godetia quadrivulnera var. davyi
Name authority H. Lewis & M. E. Lewis: Madroño 12: 38. (1953) (Jepson) H. Lewis & M. E. Lewis: Madroño 12: 33. (1953)
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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