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Lassen clarkia, Lassen clarkia or godetia, Mount Lassen godetia, Mt. Lassen clarkia, Mt. Lassen fairy-fan

Stems

erect, to 40 cm, glabrous or puberulent.

erect, to 90 cm, puberulent.

Leaves

petiole 5–25 mm;

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

petiole to 10 mm;

blade linear to narrow lanceolate, 2–5 cm.

Inflorescences

racemes, axis suberect or slightly recurved;

buds pendent.

racemes, axis recurved at tip in bud;

buds pendent.

Flowers

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.

floral tube 3–5 mm;

corolla bowl-shaped, petals pinkish lavender shading lighter proximally, with reddish purple base, broadly obovate, 8–16 mm;

stamens 8, subequal;

ovary 8-grooved, densely puberulent;

stigma not exserted beyond anthers.

Capsules

15–20 mm;

sessile.

25–40 mm;

pedicel 0–3 mm.

Seeds

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

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

2n

= 14.

Clarkia concinna

Clarkia lassenensis

Phenology Flowering May–Jun.
Habitat Woodlands, conifer forests.
Elevation 500–2000 m. (1600–6600 ft.)
Distribution
from USDA
California
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; NV; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Clarkia lassenensis is found primarily in the northeastern counties of California, south-central counties of Oregon, and northwestern counties of Nevada, with a few outlier collections from Alpine and Placer counties in the Sierra Nevada, and from northern Mendocino and Glenn counties in the North Coast Ranges.

Clarkia lassenensis is morphologically most similar to C. arcuata and C. gracilis. At one time, C. lassenensis was considered a probable parent of the tetraploid C. gracilis but cytogenetic and molecular sequence data indicate that an unknown related species, presumably now extinct, was involved. Clarkia lassenensis can be distinguished readily from C. arcuata by flower size, position of the stigma, and pubescence of the immature capsule, and from C. gracilis by having immature capsules with eight grooves rather than four.

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

Key
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. Eucharidium Onagraceae > subfam. Onagroideae > tribe Onagreae > Clarkia > sect. Rhodanthos > subsect. Flexicaules
Sibling taxa
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
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. 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. concinna subsp. automixa, C. concinna subsp. concinna, C. concinna subsp. raichei
Synonyms Eucharidium concinnum Godetia lassenensis
Name authority (Fischer & C. A. Meyer) Greene: Pittonia 1: 140. (1887) (Eastwood) H. Lewis & M. E. Lewis: Madroño 12: 33. (1953)
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