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Tracy's clarkia

graceful clarkia, slender clarkia, slender godetia

Stems

erect, to 90 cm, glabrous or puberulent.

Leaves

petiole to 11 mm;

blade linear to narrowly lanceolate, 2–7 cm.

Inflorescences

racemes, axis recurved at tip in bud;

buds pendent.

Flowers

petals pinkish lavender, base red, unspotted, 20–30 mm;

stigma exserted beyond anthers.

floral tube 1.5–10 mm;

corolla bowl-shaped, petals pink to lavender or light purple, often lighter toward base, unspotted or with red spot near middle or base, obovate or obdeltate, 6–40 mm;

stamens 8, subequal;

ovary 4-grooved, puberulent;

stigma exserted or not beyond anthers.

Capsules

25–50 mm, usually wider distally;

pedicel 0–10 mm.

Seeds

brown or mottled with dark spots, 1.5–2 mm, scaly, crest 0.1 mm.

2n

= 28.

Clarkia gracilis subsp. tracyi

Clarkia gracilis

Phenology Flowering May–Jul.
Habitat Wood­lands, serpentine soil.
Elevation 100–500 m. (300–1600 ft.)
Distribution
from FNA
CA
[BONAP county map]
from USDA
w United States
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies tracyi is known from the Inner North Coast Ranges, mainly in Colusa, Lake, and Napa counties, less commonly in Humboldt, Mendocino, Sonoma, Tehama, and Yolo counties.

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

Subspecies 4 (4 in the flora).

Clarkia gracilis is a tetraploid derived from C. amoena and an unknown, presumably extinct, species related to C. arcuata and C. lassenensis. Clarkia gracilis is readily distinguished from C. amoena by the axis of the inflorescence in bud, which is not recurved in C. amoena; it is distinguished from C. arcuata and C. lassenensis by its four rather than eight-grooved ovary.

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

Key
1. Stigmas not exserted beyond anthers; petals 6–23 mm.
subsp. gracilis
1. Stigmas exserted beyond anthers; petals20–40 mm.
→ 2
2. Petals with red spot near mid blade, base of blades white.
subsp. sonomensis
2. Petals unspotted, base of blades red or bright red.
→ 3
3. Petals 20–30 mm.
subsp. tracyi
3. Petals 30–40 mm.
subsp. albicaulis
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Rhodanthos > subsect. Jugales > Clarkia gracilis Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Rhodanthos > subsect. Jugales
Sibling taxa
C. gracilis subsp. albicaulis, C. gracilis subsp. gracilis, C. gracilis subsp. sonomensis
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. 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
Subordinate taxa
C. gracilis subsp. albicaulis, C. gracilis subsp. gracilis, C. gracilis subsp. sonomensis, C. gracilis subsp. tracyi
Synonyms Godetia cylindrica var. tracyi Godetia gracilis, G. amoena var. gracilis
Name authority (Jepson) Abdel-Hameed & R. Snow: Amer. J. Bot. 55: 1048. (1968) (Piper) A. Nelson & J. F. Macbride: Bot. Gaz. 65: 63. (1918)
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