Aconitum maximum subsp. maximum

Illustrated
Treatment appears in FNA Volume 3.

Roots tuberous, tubers distally bulbous, 20-50 × 5-20 mm, parent and daughter tubers separated by connecting rhizome usually 10-15 mm. Stem erect, ca. 3-20 dm. Cauline leaves: blade 3-divided with more than 2 mm leaf tissue between deepest sinus and base of blade, 5-20cm wide, segment margins deeply cleft and toothed. Inflorescences racemes or panicles, terminal portion often contracted and capitate. Flowers blue, purple, or occasionally bluish white, 25-50 mm from tips of pendent sepals to top of hood; pendent sepals ca. 15 mm; hood conic-hemispheric, ca. 17 mm from receptacle to top of hood, ca. 20 mm wide from receptacle to beak apex.


Phenology: Flowering summer (mid Jul–Sep).
Habitat: Meadows, thickets, and forests
Elevation: 0-300 m

Distribution

V3 601-distribution-map.gif

Alaska, Asia (Russian Far East and Japan)

Discussion

Aconitum maximum subsp. maximum is a variable species. The only other species of Aconitum occurring with it on the Alaska Peninsula and the Aleutian Islands is A.delphiniifolium. Aconitum maximum subsp. maximum is reputedly extremely poisonous and was used as a source of arrow poison by the Aleuts (D. E. Moerman 1986; D. E. Brink 1982).

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

D. E. Brink +  and J. A. Woods +
Pallas ex de Candolle +
cuneate +, truncate +  and cordate +
expanded +
straight +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
3-divided +
5cm;20cm +
globose;cylindric +
nearly +  and sessile +
Alaska +  and Asia (Russian Far East and Japan) +
0-300 m +
sessile +  and pedicellate +
bluish white +, purple +  and blue +
showy +  and inconspicuous +
sessile +  and aggregate +
Meadows, thickets, and forests +
17 cm170 mm <br />0.17 m <br /> (?) +
conic-hemispheric +
20 cm200 mm <br />0.2 m <br /> (?) +
0 cm0 mm <br />0 m <br /> (28 cm280 mm <br />0.28 m <br />) +
membranous +
round-reniform +
compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
0.6 cm6 mm <br />0.006 m <br /> (2 cm20 mm <br />0.02 m <br />) +
palmate +  and pinnate +
toothed;incised +
capitate +  and coiled +
distinct +
reduced +
Flowering summer (mid Jul–Sep). +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
elongate +
not arillate +  and stalked +
deltoid +
3 (?) +  and 7 (?) +
not persistent +
distinct +
3 +  and 6 +
15 cm150 mm <br />0.15 m <br /> (?) +
Illustrated +
persistent +
Aconitum maximum subsp. maximum +
Aconitum maximum +
subspecies +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
cylindric +, hemispheric +  and rounded-conic +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
herbaceous +  and woody +