Flora of North America species comparison

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Clarkia franciscana

Clarkia dudleyana

Presidio clarkia

Dudley's clarkia
Stems

erect, to 40 cm, strigillose.

erect, to 70 cm, puberulent.
Leaves

petiole 0–5 mm;

blade narrowly lanceolate, 1–5.5 cm.

petiole 3–10 mm;

blade narrowly lanceolate, 1.5–7 cm.
Inflorescences

racemes, axis straight;

buds erect.

open racemes, axis recurved at tip in bud;

buds pendent.
Flowers

floral tube 1–3 mm;

sepals reflexed together to one side;

corolla bowl-shaped, petals lavender-pink shading white near middle, base bright reddish purple, fan-shaped, 5–13 mm, apex erose;

stamens 8, subequal;

ovary cylindrical, 4-grooved, puberulent;

stigma not exserted beyond anthers.

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.
Capsules

20–40 mm;

pedicel 0–15 mm.

10–30 mm.
Seeds

gray, 1.2–1.5 mm, scaly, crest 0.2 mm.

brown, 1 mm, minutely scaly to puberulent, crest inconspicuous.
2n

= 14.

= 18.

Clarkia franciscana

Clarkia dudleyana
Phenology Flowering May–Jun. Flowering May–Jul.
Habitat Serpentine soil. Openings in woodlands, chaparral, yellow-pine forests, coastal sage.
Elevation 50 m. (200 ft.) 0–1500 m. (0–4900 ft.)
Distribution
from FNA
CA
[BONAP county map]
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Clarkia franciscana is an endangered species (designated rare by the California Native Plant Society), restricted to serpentine soils in coastal grass and shrub communities. The only known localities for it are the Presidio in San Francisco County, and the Oakland Hills in Alameda and Contra Costa counties.

Geographic distribution and petal color pattern suggest that Clarkia franciscana may be a self-pollinating derivative of C. rubicunda. If true, enzyme studies indicate that the origin is not recent.

Clarkia franciscana is in the Center for Plant Conservation’s National Collection of Endangered Plants.

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

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.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Rhodanthos > subsect. Primigenia Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Phaeostoma > subsect. Lautiflorae
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. 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. 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 dudleyana
Name authority H. Lewis & P. H. Raven: Brittonia 10: 7, fig. 1a, b, d. (1958) (Abrams) J. F. Macbride: Contr. Gray Herb. 56: 54. (1918)
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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