Flora of North America species comparison

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Clarkia dudleyana

Clarkia xantiana

Dudley's clarkia

gunsight clarkia, Xantus' clarkia
Stems

erect, to 70 cm, puberulent.

erect, to 80 cm, glabrous, glaucous.
Leaves

petiole 3–10 mm;

blade narrowly lanceolate, 1.5–7 cm.

petiole 0–2 mm;

blade linear to lanceolate, 2–6 cm.
Inflorescences

open racemes, axis recurved at tip in bud;

buds pendent.

open racemes, axis straight;

buds pendent.
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 2–5 mm;

sepals reflexed together to 1 side;

corolla rotate, petals lavender to reddish purple, lavender-pink, or white, often with white-surrounded dark reddish purple spot distally, clawed, 2-lobed, with slender central tooth, 1–3 mm, 6–20 mm;

stamens 8, in 2 unequal sets, outer anthers lavender to purple, inner smaller, paler;

ovary 8-grooved;

stigma exserted or not beyond anthers.
Capsules

10–30 mm.

15–25 mm;

pedicel 0–5 mm.
Seeds

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

brown, 1.3–1.5 mm, tuberculate, crest minute.
2n

= 18.

Clarkia dudleyana

Clarkia xantiana
Phenology Flowering May–Jul.
Habitat Openings in woodlands, chaparral, yellow-pine forests, coastal sage.
Elevation 0–1500 m. (0–4900 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from USDA
California
[WildflowerSearch map]
[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.)

Subspecies 2 (2 in the flora).

Originally placed in the group now delimited as subsect. Phaeostoma by H. Lewis and M. E. Lewis (1955), Clarkia xantiana was treated as a monotypic subsect. Xantianae within sect. Phaeostoma by K. E. Holsinger (1985), based mainly on its unusual 2-lobed petals with a tooth in the sinus. Molecular data (R. A. Levin et al. 2004) placed C. xantiana close to C. bottae, and both of them close to but not within sect. Phaeostoma. Both species share the chromosome number 2n = 18 with C. jolonensis.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Petals 12–20 mm; stigmas exserted beyond anthers.
subsp. xantiana
1. Petals 6–12 mm; stigmas not exserted beyond anthers.
subsp. parviflora
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. 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. 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. 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
Subordinate taxa
C. xantiana subsp. parviflora, C. xantiana subsp. xantiana
Synonyms Godetia dudleyana
Name authority (Abrams) J. F. Macbride: Contr. Gray Herb. 56: 54. (1918) A. Gray: Proc. Boston Soc. Nat. Hist. 7: 146. (1859)
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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