Cimicifuga laciniata

S. Watson

Proc. Amer. Acad. Arts 20: 352. 1885.

Common names: Mount Hood bugbane cut-leaved bugbane
Endemic
Treatment appears in FNA Volume 3.

Stems 110-130 cm, glabrous or sparsely pubescent. Leaves: petiole rounded abaxially or sometimes laterally compressed, 10-45 cm, adaxially narrowly and deeply grooved, densely pubescent. Leaf-blade 2-3-ternately compound; leaflets 20-35; terminal leaflet of central segment ovate to ovatelanceolate, deeply cleft into 3 primary lobes, 7-12 × 7-12 cm, with 3 veins arising basally, base somewhat cordate, margins incised and laciniate, apex acuminate, surfaces abaxially tomentose on larger veins, adaxially glabrous; other leaflets 5-10 × 5-11 cm. Inflorescences erect panicles of 4-8 racemelike branches, 10-35 cm, tomentose; bract 1, subtending pedicel, lance-subulate, 3-4 mm; pedicel 3-13 mm, tomentose, bracteoles absent. Flowers: sepals 4 or 5, white; petals 1-5, body yellowish, lobes white, ovate, ca. 3-4 mm, clawed; nectary basal; stamens 20-30; filaments 4-5 mm; pistils (2-) 3-5, short-stipitate, densely pubescent; style subulate; stigma minute, 0.3 mm wide. Follicles (2-) 3-4 (-5), slender-stipitate, oblong-obovate, laterally compressed, 7-13 mm, thin walled. Seeds pale-brown, lenticular, 2.5-3 mm, loosely covered with elongate, narrow, white, lacerate scales but not appearing cylindric.


Phenology: Flowering summer (Aug–Sep).
Habitat: Moist, open woods, boggy flats, thickets near heads of drainages, streamsides, meadow margins, and lakesides
Elevation: 500-1800 m

Discussion

Historically Cimicifuga laciniata had been collected only at Lost Lake on Mount Hood, Oregon. The discovery of many new sites in recent years has led to the removal of this species from state and federal lists of protected plants.

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Cimicifuga laciniata"
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Gwynn W. Ramsey +
S. Watson +
cordate +
straight +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
lance-subulate +
racemelike +
globose;cylindric +
Mount Hood bugbane +  and cut-leaved bugbane +
Oreg. +  and Wash. +
500-1800 m +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
sessile +  and pedicellate +
showy +  and inconspicuous +
walled +  and slender-stipitate +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
stipitate +, sessile +  and aggregate +
ovoid +  and obovoid +
Moist, open woods, boggy flats, thickets near heads of drainages, streamsides, meadow margins, and lakesides +
axillary +  and terminal +
petiolate +  and compound +
whorled +, opposite +  and alternate +
cauline +  and basal +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
2-5-lobed +, ovatelanceolate +  and broadly obovate or orbiculate +
5 cm50 mm <br />0.05 m <br /> (11 cm110 mm <br />0.11 m <br />) +
incised +  and toothed +
clawed;ovate +
palmate +  and pinnate +
laciniate;incised +
many-flowered +
10 cm100 mm <br />0.1 m <br /> (35 cm350 mm <br />0.35 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
distinct +
conspicuous +
reduced +
compressed +  and rounded +
10 cm100 mm <br />0.1 m <br /> (45 cm450 mm <br />0.45 m <br />) +
Flowering summer (Aug–Sep). +
short-stipitate +
3 +  and 5 +
Proc. Amer. Acad. Arts +
lacerate +  and elongate +
not arillate +  and stalked +
verrucose +
not cylindric +  and lenticular +
7 cm70 mm <br />0.07 m <br /> (12 cm120 mm <br />0.12 m <br />) +
ovate +  and ovatelanceolate +
7 cm70 mm <br />0.07 m <br /> (12 cm120 mm <br />0.12 m <br />) +
not persistent +
distinct +
5 +  and 4 +
more or less concave ovate +  and obovate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
110 cm1,100 mm <br />1.1 m <br /> (130 cm1,300 mm <br />1.3 m <br />) +
persistent +
subulate +
glabrous;tomentose +
Cimicifuga laciniata +
Cimicifuga +
species +
herbaceous +  and woody +