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campo clarkia, delicate clarkia

Mildred's clarkia

Stems

erect, 20–70 cm, glabrous and glaucous distally, usually puberulent basally.

erect, to 100 cm, puberulent.

Leaves

petiole to 10 mm;

blade lanceolate to elliptic or ovate, 1.5–4 cm.

petiole 15–40 mm;

blade elliptic to ovate, 3–6 cm.

Inflorescences

open racemes, sometimes branched, axis straight;

buds pendent.

open racemes, axis recurved in bud, straight only 1–3 nodes distal to open flowers;

buds pendent, tip acute.

Flowers

floral tube 2 mm;

sepals reflexed together to 1 side;

corolla rotate, petals oblanceolate to obovate, 8–12 mm, claw tapered, shorter than blade, apex entire;

stamens 8, unequal, outer anthers orange-red, inner smaller, paler.

floral tube 2–3 mm;

sepals usually reflexed individually;

corolla rotate, petals reddish purple, often darker flecked or spotted, narrowly obdeltate to suborbiculate, unlobed, 11–25 × 7–18 mm, length 1.4–1.6 times width;

stamens 8, subequal, subtended by ciliate scales, anthers magenta or orange-red to yellow, pollen blue-gray or bright yellow to tan;

ovary shallowly 4-grooved, puberulent;

stigma exserted beyond anthers.

Capsules

15–35 mm;

subsessile.

20–30 mm;

pedicel 0–5 mm.

Seeds

brown, 1–1.5 mm, tuberculate (especially on raphe), crest inconspicuous.

brown or gray, 1.5–1.8 mm, scaly-echinate, crest 0.1 mm.

2n

= 36.

Clarkia delicata

Clarkia mildrediae

Phenology Flowering Apr–May.
Habitat Oak woodlands, chaparral.
Elevation 0–1000 m. (0–3300 ft.)
Distribution
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
from USDA
California
[WildflowerSearch map]
[BONAP county map]
Discussion

Clarkia delicata is known in California only from the Peninsular Ranges, mainly in San Diego County with outliers in Riverside and San Bernardino counties, and in northern Baja California, Mexico. Because of its limited range, it is listed as rare by the California Native Plant Society. It is a tetraploid derived from hybridization between C. epilobioides and C. unguiculata.

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

Subspecies 2 (2 in the flora).

Clarkia mildrediae is closely related to, and may be derived from, C. borealis. Clarkia mildrediae subsp. lutescens is probably the direct ancestor of C. stellata. Clarkia mildrediae differs from C. borealis in petal color and inflorescence habit and from C. stellata in flower size and position of the stigma. On the basis of morphology, chromosome number and pairing, C. mildrediae appears to be one of the parents of the tetraploid species C. rhomboidea.

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

Key
1. Petals 12–18 mm wide; anthers magenta, fresh pollen blue-gray.
subsp. mildrediae
1. Petals 7–16 mm wide; anthers yellow to orange-red, fresh pollen bright yellow to tan.
subsp. lutescens
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Phaeostoma > subsect. Connubium 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. 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
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. 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. mildrediae subsp. lutescens, C. mildrediae subsp. mildrediae
Synonyms Godetia delicata Phaeostoma mildrediae
Name authority (Abrams) A. Nelson & J. F. Macbride: Bot. Gaz. 65: 60. (1905) (A. Heller) H. Lewis & M. E. Lewis: Madroño 12: 34. (1953)
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