Flora of North America species comparison

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Clarkia springvillensis

Clarkia epilobioides

Springville clarkia

canyon clarkia, willow-herb clarkia
Stems

erect, 30–90 cm, glabrous, glaucous.

erect, 20–70 cm, sparsely puberulent.
Leaves

petiole 0–5 mm;

blade lanceolate, 2–9 cm, surfaces glaucous, glabrous.

petiole to 7 mm;

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

open racemes, axis erect;

buds pendent.

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

buds pendent.
Flowers

floral tube 3–4 mm;

sepals reflexed together to 1 side, usually dark red-purple, sparsely to densely puberulent abaxially, without long, spreading hairs;

corolla rotate, petals lavender-pink, usually with dark purplish spot near base, ± diamond-shaped, 13–15 mm, claw slender, equal to or longer than blade, entire;

stamens 8, unequal, outer anthers red, inner smaller, paler;

ovary with hairs as on sepals;

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

15–30 mm.

10–30 mm;

pedicel 5–11 mm.
Seeds

unknown.

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

= 18.

= 18.

Clarkia springvillensis

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

Clarkia springvillensis is a rare species known primarily from the vicinity of Springville in Tulare County, with one ambiguous collection from Kern County. Due to its very limited distribution, C. springvillensis is listed as rare by the California Native Plant Society. It is derived from C. unguiculata and is closely related to C. exilis and C. tembloriensis.

(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. Phaeostoma > subsect. Phaeostoma 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. rubicunda, C. similis, C. speciosa, 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 Oenothera epilobioides, Godetia epilobioides
Name authority Vasek: Madroño 17: 220. (1964) (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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