Flora of North America species comparison

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Clarkia dudleyana

Clarkia prostrata

Dudley's clarkia

prostrate clarkia
Stems

erect, to 70 cm, puberulent.

prostrate or decumbent, to 50 cm, sparsely puberulent.
Leaves

petiole 3–10 mm;

blade narrowly lanceolate, 1.5–7 cm.

sessile or subsessile;

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

open racemes, axis recurved at tip in bud;

buds pendent.

prostrate, dense racemes, axis straight;

buds erect.
Flowers

floral tube 1–3 mm;

sepals reflexed together to 1 side;

corolla bowl-shaped, petals lavender-pink, usually white-streaked, often red-flecked, broadly fan-shaped, 10–30 mm, apex subentire to crenulate;

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

floral tube 4–7 mm;

sepals usually reflexed in pairs;

corolla bowl-shaped, petals lavender-pink shading pale yellow basally, with reddish purple spot above base, 10–15 mm;

stamens 8, subequal;

ovary 8-grooved;

stigma not exserted beyond anthers.
Capsules

10–30 mm.

20–30 mm.
Seeds

brown, 1 mm, minutely scaly to puberulent, crest inconspicuous.

brown or gray, 1–1.5 mm, scaly, crest 0.2 mm.
2n

= 18.

= 52.

Clarkia dudleyana

Clarkia prostrata
Phenology Flowering May–Jul. Flowering May–Jul.
Habitat Openings in woodlands, chaparral, yellow-pine forests, coastal sage. Coastal bluffs in grasslands and closed-cone pine forests.
Elevation 0–1500 m. (0–4900 ft.) 0–100 m. (0–300 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Clarkia dudleyana is a rather widespread species in California, known primarily from the central and southern Sierra Nevada foothills, the Tehachapi Mountain area, the Transverse Ranges, and the Peninsular Ranges, ranging from Tuolumne to Riverside counties, sporadically in the north to Nevada County and in the south to San Diego County

Clarkia dudleyana is morphologically most similar to C. biloba and C. modesta, but molecular data suggest that the relationship is not close. On the basis of chloroplast DNA sequence, C. dudleyana and C. heterandra are closely related.

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

Clarkia prostrata, like C. davyi, occurs only on coastal bluffs and adjacent low elevation pine forests along the Pacific coast, and in this case only in the California Central Coast Subregion in Monterey, Santa Barbara, Santa Cruz, and San Luis Obispo counties.

Clarkia prostrata is a hexaploid that combines the tetraploid genome of C. davyi and the diploid genome of C. speciosa. Clarkia prostrata is morphologically and ecologically very similar to C. davyi but can usually be distinguished by its larger flowers with a spot on each petal. It differs from C. speciosa by having smaller flowers with the stigma not exserted beyond the anthers.

(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 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. 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
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. 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 dudleyana
Name authority (Abrams) J. F. Macbride: Contr. Gray Herb. 56: 54. (1918) H. Lewis & M. E. Lewis: Madroño 12: 36. (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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