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Waltham Creek clarkia

Mildred's clarkia

Stems

erect, 20–70 cm, puberulent.

erect, to 100 cm, puberulent.

Leaves

petiole 5–15 mm;

blade linear to narrowly lanceolate or elliptic, 2–4 cm.

petiole 15–40 mm;

blade elliptic to ovate, 3–6 cm.

Inflorescences

open racemes, axis recurved at tip in bud;

buds pendent.

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

buds pendent, tip acute.

Flowers

floral tube 1–3 mm;

sepals reflexed together to 1 side;

corolla generally rotate, petals usually arranged in lateral pairs, pink, usually darker flecked, oblanceolate to diamond-shaped, scarcely clawed, 8–12 mm;

stamens 8, unequal, outer anthers lavender, 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

15–30 mm.

20–30 mm;

pedicel 0–5 mm.

Seeds

brown, 0.8–1 mm, tuberculate, crest inconspicuous.

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

2n

= 16.

Clarkia modesta

Clarkia mildrediae

Phenology Flowering Apr–Jun.
Habitat Sandy places in woodlands.
Elevation 0–1000 m. (0–3300 ft.)
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
from USDA
California
[WildflowerSearch map]
[BONAP county map]
Discussion

Clarkia modesta occurs mainly in the Inner North Coast Ranges, the San Francisco Bay area, and the South Coast Ranges, from Trinity to Santa Barbara counties, and in the central and southern Sierra Nevada Foothills, from Mariposa to Tulare counties.

Clarkia modesta is one of the parents of the tetraploid species C. similis, from which it differs by having darker pink petals.

(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. 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. dudleyana, C. epilobioides, C. exilis, C. franciscana, C. gracilis, C. heterandra, C. imbricata, C. jolonensis, C. lassenensis, C. lewisii, C. lingulata, C. mildrediae, 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 Phaeostoma mildrediae
Name authority Jepson: Man. Fl. Pl. Calif., 673. (1925) (A. Heller) H. Lewis & M. E. Lewis: Madroño 12: 34. (1953)
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