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northern clarkia

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Stems

erect, to 100 cm, puberulent.

erect, to 40 cm, glabrous or puberulent.

Leaves

petiole 15–40 mm;

blade elliptic to ovate, 2–6 cm.

petiole 5–25 mm;

blade lanceolate to elliptic or ovate, 1–4.5 cm.

Inflorescences

open racemes, axis recurved only at tip in bud, straight 4+ nodes distal to open flowers;

buds pendent, fusiform, base slightly swollen, tip acute.

racemes, axis suberect or slightly recurved;

buds pendent.

Flowers

floral tube 2–4 mm;

sepals reflexed individually;

corolla rotate, petals lavender-pink, often dark-flecked, obdeltate to suborbiculate, unlobed, 13–19 ×7–12 mm, length 1.6–2 times width;

stamens 8, subequal, subtended by ciliate scales, pollen blue-gray;

ovary shallowly 4-grooved, puberulent;

stigma exserted beyond anthers.

floral tube 13–25 mm;

sepals reflexed together to 1 side, sometimes nearly separating, petal-like, pink or red;

corolla rotate, petals bright pink, usually white-streaked, narrowly fan-shaped, 10–30 mm, length 2 times width, tapered to a ± distinct claw, lobes ± equal or middle lobe wider, usually oblanceolate;

stamens 4, filaments not wider distally;

ovary 8-grooved;

stigma exserted or not beyond anthers.

Capsules

20–30 mm;

pedicel 0–3 mm.

15–20 mm;

sessile.

Seeds

light brown or mottled with dark spots, 1.5–2.5 mm, minutely tuberculate, crest 0.2 mm.

reddish brown, 2–3 mm, scaly, crest to 0.8 mm, conspicuous.

Clarkia borealis

Clarkia concinna

Distribution
from USDA
California
[BONAP county map]
from USDA
California
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (2 in the flora).

Clarkia borealis is closely related, and possibly ancestral, to C. mildrediae. The two species can be distinguished most readily by the degree of curvature of the inflorescence and the petal color.

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

Subspecies 3 (3 in the flora).

The two self-pollinating subspecies with smaller flowers probably arose independently from the outcrossing subsp. concinna.

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

Key
1. Seeds 1.5–1.8 mm.
subsp. borealis
1. Seeds 1.8–2.5 mm.
subsp. arida
1. Stigmas exserted beyond anthers; petals 15–30 mm.
subsp. concinna
1. Stigmas not exserted beyond anthers; petals 10–20 mm.
→ 2
2. Sepals remaining connate only near tip; petal lobes prominent, blades gradually tapered to distinct claw.
subsp. automixa
2. Sepals remaining connate in distal 2/3; petal lobes short, blades abruptly tapered to inconspicuous claw.
subsp. raichei
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Myxocarpa Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Eucharidium
Sibling taxa
C. affinis, C. amoena, C. arcuata, C. australis, C. biloba, 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. 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. 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. springvillensis, C. stellata, C. tembloriensis, C. unguiculata, C. virgata, C. williamsonii, C. xantiana
Subordinate taxa
C. borealis subsp. arida, C. borealis subsp. borealis
C. concinna subsp. automixa, C. concinna subsp. concinna, C. concinna subsp. raichei
Synonyms Eucharidium concinnum
Name authority E. Small: Canad. J. Bot. 49: 1215, figs. 2B, 3A,B. (1971) (Fischer & C. A. Meyer) Greene: Pittonia 1: 140. (1887)
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