Flora of North America species comparison

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Clarkia dudleyana

Clarkia borealis

Dudley's clarkia

northern clarkia
Stems

erect, to 70 cm, puberulent.

erect, to 100 cm, puberulent.
Leaves

petiole 3–10 mm;

blade narrowly lanceolate, 1.5–7 cm.

petiole 15–40 mm;

blade elliptic to ovate, 2–6 cm.
Inflorescences

open racemes, axis recurved at tip in bud;

buds pendent.

open racemes, axis recurved only at tip in bud, straight 4+ nodes distal to open flowers;

buds pendent, fusiform, base slightly swollen, tip acute.
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 2–4 mm;

sepals reflexed individually;

corolla rotate, petals lavender-pink, often dark-flecked, obdeltate to suborbiculate, unlobed, 13–19 ×7–12 mm, length 1.6–2 times width;

stamens 8, subequal, subtended by ciliate scales, pollen blue-gray;

ovary shallowly 4-grooved, puberulent;

stigma exserted beyond anthers.
Capsules

10–30 mm.

20–30 mm;

pedicel 0–3 mm.
Seeds

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

light brown or mottled with dark spots, 1.5–2.5 mm, minutely tuberculate, crest 0.2 mm.
2n

= 18.

Clarkia dudleyana

Clarkia borealis
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
[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).

Clarkia borealis is closely related, and possibly ancestral, to C. mildrediae. The two species can be distinguished most readily by the degree of curvature of the inflorescence and the petal color.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Seeds 1.5–1.8 mm.
subsp. borealis
1. Seeds 1.8–2.5 mm.
subsp. arida
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. Myxocarpa
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. 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, C. xantiana
Subordinate taxa
C. borealis subsp. arida, C. borealis subsp. borealis
Synonyms Godetia dudleyana
Name authority (Abrams) J. F. Macbride: Contr. Gray Herb. 56: 54. (1918) E. Small: Canad. J. Bot. 49: 1215, figs. 2B, 3A,B. (1971)
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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