Flora of North America species comparison

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Clarkia imbricata

Clarkia jolonensis

Vine Hill clarkia

Jolon clarkia
Stems

erect, to 60 cm, glabrous or sparsely puberulent.

erect, to 60 cm, glabrous, glaucous.
Leaves

petiole 0–2 mm;

blade lanceolate, 2–2.5 cm.

petiole to 10 mm;

blade narrowly lanceolate to lanceolate, 3–5 cm.
Inflorescences

dense racemes, axis straight;

buds erect.

open racemes, axis straight;

buds pendent.
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 2–3 mm;

sepals reflexed together to 1 side;

corolla bowl-shaped, petals pale lavender to pinkish lavender, usually red-flecked, unlobed, 10–20 mm;

stamens 8, unequal, outer anthers lavender, inner smaller, paler;

ovary obscurely 4-grooved;

stigma exserted beyond anthers.
Capsules

10–15 mm.

30–40 mm;

pedicel 0–10 mm.
Seeds

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

dark gray, 1.2–1.4 mm, scaly, crest 0.2 mm.
2n

= 16.

= 18.

Clarkia imbricata

Clarkia jolonensis
Phenology Flowering Jun–Jul. Flowering Apr–Jun.
Habitat Clearings, roadsides, chaparral. Dry woodlands.
Elevation 50 m. (200 ft.) 200–700 m. (700–2300 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[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 jolonensis is known only from Monterey County, mainly in the Outer South Coast Ranges. It is scarcely distinguishable morphologically from C. bottae except for seed color, but attempts to produce hybrids have been unsuccessful. Although in describing C. jolonensis Parnell suggested that its range did not overlap with that of C. bottae, the ranges in fact overlap extensively in Monterey County.

(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. Fibula
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. davyi, C. delicata, C. dudleyana, C. epilobioides, C. exilis, C. franciscana, C. gracilis, C. heterandra, C. imbricata, 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
Name authority H. Lewis & M. E. Lewis: Madroño 12: 38. (1953) D. R. Parnell: Madroño 20: 322. (1970)
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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