Flora of North America species comparison

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Clarkia rubicunda

Clarkia epilobioides

farewell-to-spring, ruby chalice clarkia

canyon clarkia, willow-herb clarkia
Stems

erect or decumbent, to 150 cm, puberulent;

buds erect.

erect, 20–70 cm, sparsely puberulent.
Leaves

petiole to 10 mm;

blade lanceolate to elliptic, 1–4 cm.

petiole to 7 mm;

blade linear to narrowly lanceolate or oblanceolate, 1.5–2.5 cm.
Inflorescences

open or dense spikes or racemes, axis straight;

buds erect.

open racemes, sometimes few-branched, axis recurved at tip in bud;

buds pendent.
Flowers

floral tube 4–10 mm;

sepals reflexed together to one side;

corolla bowl-shaped, petals pink to lavender, base red or purplish red, fan-shaped, 10–30 mm, apex erose;

stamens 8, subequal;

ovary cylindrical, 4-grooved, puberulent;

stigma exserted beyond anthers.

usually cleistogamous;

floral tube 1–3 mm;

sepals reflexed together to 1 side or in pairs;

corolla bowl-shaped, petals fading pink, obovate;

stamens 8, unequal, anthers white or cream, outer ones larger than inner.
Capsules

20–40 mm;

pedicel 0–25(–40) mm.

10–30 mm;

pedicel 5–11 mm.
Seeds

brown to grayish brown, 1.2–1.5 mm, scaly, crest 0.2 mm.

brown, 0.5–1 mm, scaly, crest inconspicuous.
2n

= 14.

= 18.

Clarkia rubicunda

Clarkia epilobioides
Phenology Flowering May–Aug. Flowering Apr–May.
Habitat Openings in woodlands, forests, chaparral, coastal scrub. Shady sites, woodlands, chaparral.
Elevation 0–500 m. (0–1600 ft.) 0–1000 m. (0–3300 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Clarkia rubicunda is known from the central coast of California, from Contra Costa and Marin counties south along the coast and foothills to northern San Luis Obispo County.

Clarkia rubicunda is probably a derivative of C. amoena and may be ancestral to C. franciscana. Clarkia rubicunda is distinguishable from some populations of C. amoena only by the absence of a red spot or group of spots near the middle of the petal and the presence of a red area at the base of the petal. Clarkia rubicunda can be distinguished from C. franciscana by the position of the stigma and size and shape of the petals. All three species differ in chromosome arrangement and hybrids are highly sterile.

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

Clarkia epilobioides is known from south-central Arizona in Gila, Maricopa, Pima, and Pinal counties, and widely in west-central and southwestern California and adjacent Baja California, Mexico. In California, it occurs from Contra Costa and San Mateo counties in the San Francisco Bay area to San Diego County in the south, including most of the Channel Islands.

Clarkia epilobioides is modally self-pollinating, and up to half of its flowers do not open, yet set a full complement of seeds (H. Lewis and M. E. Lewis 1955). However, outcrossing does occur, and C. epilobioides is one of the parents of the tetraploid species C. similis, from which it differs by having white, unflecked petals; it is also one of the parents of the tetraploid C. delicata.

(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. Micranthae
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. pulchella, C. purpurea, C. rhomboidea, C. rostrata, 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. 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 rubicunda, C. rubicunda subsp. blasdalei, G. blasdalei Oenothera epilobioides, Godetia epilobioides
Name authority (Lindley) H. Lewis & M. E. Lewis: Madroño 12: 34. (1953) (Nuttall ex Torrey & A. Gray) A. Nelson & J. F. Macbride: Bot. Gaz. 65: 60. (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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