Flora of North America species comparison

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Clarkia pulchella

Clarkia imbricata

deer horn, deerhorn clarkia, elk horn clarkia, elkhorns clarkia, large-flower clarkia, pink fairies, ragged robin

Vine Hill clarkia
Stems

erect, to 50 cm, glabrous or puberulent.

erect, to 60 cm, glabrous or sparsely puberulent.
Leaves

petiole 0–10 mm;

blade linear to lanceolate, 2–8 cm.

petiole 0–2 mm;

blade lanceolate, 2–2.5 cm.
Inflorescences

racemes, axis straight or recurved;

buds pendent.

dense racemes, axis straight;

buds erect.
Flowers

floral tube minutely strigillose in distal 1/2 inside;

sepals reflexed together to1 side;

corolla rotate, petals very broadly fan-shaped, 10–30 mm, lateral lobes 1–5 mm;

stamens 8, unequal, 4 fertile, 4 sterile and reduced, subtended by puberulent scales, outer anthers lavender to white, inner much smaller, sterile;

ovary shallowly 8-grooved;

stigma exserted beyond anthers.

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.
Capsules

10–30 mm;

pedicel 3–10 mm.

10–15 mm.
Seeds

dark brown, 1 mm, scaly, crest to 0.1 mm, inconspicuous.

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

= 24.

= 16.

Clarkia pulchella

Clarkia imbricata
Phenology Flowering May–Jul. Flowering Jun–Jul.
Habitat Openings in sagebrush and coniferous forests. Clearings, roadsides, chaparral.
Elevation 500–2200 m. (1600–7200 ft.) 50 m. (200 ft.)
Distribution
from FNA
ID; MT; OR; SD; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Clarkia pulchella is the only North American species in the genus that does not occur in California; instead it is found throughout most of eastern Oregon and Washington, western Idaho, and northwestern Montana, to southern British Columbia, with disjunct occurrences in Bannock County in Idaho, Teton County in Wyoming, and Meade County in South Dakota. It was first discovered in 1806 by Meriwether Lewis during the Lewis and Clark expedition, and was the first species named in the new genus Clarkia.

Clarkia pulchella is an allopolyploid that combines morphological characteristics of sect. Myxocarpa (C. borealis and relatives), which includes two species with 2n = 10, and sect. Eucharidium (C. concinna and C. breweri) with 2n = 14. Molecular data support a relationship with sect. Eucharidium but at present show no direct association with sect. Myxocarpa.

Clarkia elegans Poiret is an illegitimate name that pertains here.

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

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.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Clarkia 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. 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. 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. 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
Name authority Pursh: Fl. Amer. Sept. 1: 260, plate 11. (1813) — (as Clarckia) H. Lewis & M. E. Lewis: Madroño 12: 38. (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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