Anemone tuberosa

Rydberg

Bull. Torrey Bot. Club 29: 151. 1902.

Common names: Desert anemone
Illustrated
Treatment appears in FNA Volume 3.

Aerial shoots 10-30 (-40) cm, from caudexlike tubers, tubers ascending to vertical. Basal leaves 1-3 (-5), 1-2-ternate; petiole 5-7 cm; terminal leaflet sessile, rarely petiolulate, irregularly oblanceolate, (1.5-) 2-3 (-3.5) × 1-2 (-2.5) cm, base narrowly cuneate, margins incised to dissected on distal 2/3, apex broadly acute, surfaces nearly glabrous; lateral leaflets 1-2×-parted and/or lobed; ultimate lobes 4-8 (-12) mm wide. Inflorescences 2-3 (-5) -flowered cymes or flowers solitary; peduncle proximally nearly glabrous, distally villous; involucral-bracts primarily 3, (1-) 2-tiered, simple, ±similar to basal leaves, pinnatifid, 1.5-5.5 cm (primary involucral-bracts 2-5.5 cm, secondary involucral-bracts 1.5-3.5 cm), bases distinct, broadly to narrowly cuneate to clasping, margins irregularly serrulate and pinnatifid on ca. distal 1/2, apex narrowly acute to acuminate, surfaces thinly pilose; segments primarily 3, linear to pinnatifid; lateral segments 1-2×-parted and/or lobed; ultimate lobes 1.5-2.5 mm wide. Flowers: sepals 8-10, pink to white, linear-oblong, 10-14 (-20) × (2-) 3-5 (-6) mm, sparsely hairy; stamens 50-60. Heads of achenes fusiform; pedicel (5-) 7-15 (-22) cm. Achenes: body orbiculate, flat, 2.5-3.5 × 2-2.5 mm, not winged, densely villous; beak straight, ca. 1.5 mm, minutely puberulous, not plumose. 2n=16.


Phenology: Flowering spring (Apr–May).
Habitat: Rocky slopes, streamsides
Elevation: 800-2500 m

Distribution

V3 153-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Tex., Utah, n Mexico

Discussion

The tuberous anemones in North America (A. tuberosa, A. edwardsiana, A. okennonii, A. berlandieri, and A. caroliniana) are closely related to each other and to the South American species A. decapetala Arduino, A. triternata Vahl, A. cicutifolia I.M. Johnston, and A. sphenophylla Poeppig. Particularly useful characters in identifying North American plants are number of tiers of involucral bracts, presence or absence of heterophylly between basal leaves and involucral bracts, and presence or absence of rhizomes. The current treatment of this group primarily follows C. S. Keener and B. E. Dutton (1994), who included a discussion of the relationships among its members. For a cytotaxonomic discussion of most members of this group, see C. Joseph and M. Heimburger (1966).

Selected References

None.

Lower Taxa

None.

"broadened" is not a number.

... more about "Anemone tuberosa"
Bryan E. Dutton +, Carl S. Keener +  and Bruce A. Ford +
Rydberg +
distinct +
cuneate +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
straight +
rudimentary +
puberulous +
not plumose +
1.5 cm15 mm <br />0.015 m <br /> (?) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
orbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
globose;cylindric +
Desert anemone +
2-3(-5)-flowered +
Ariz. +, Calif. +, Nev. +, N.Mex. +, Tex. +, Utah +  and n Mexico +
800-2500 m +
2-3(-5)-flowered +
showy +  and inconspicuous +
0 cm0 mm <br />0 m <br /> (60 cm600 mm <br />0.6 m <br />) +
stalked +, sessile +  and aggregate +
ovoid;obovoid +
Rocky slopes, streamsides +
fusiform +
axillary +  and terminal +
1.5 cm15 mm <br />0.015 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
lobed +  and 1-2×-parted +
petiolate +, compound +  and simple +
whorled +, opposite +  and alternate +
palmate +  and pinnate +
pinnatifid;incised;dissected +
15 cm150 mm <br />0.15 m <br /> (22 cm220 mm <br />0.22 m <br />) +
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
villous +  and glabrous +
distinct +
conspicuous +
reduced +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Flowering spring (Apr–May). +
Bull. Torrey Bot. Club +
not arillate +  and stalked +
1.4 cm14 mm <br />0.014 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
not persistent +
distinct +
8 +  and 10 +
linear-oblong +
0.35 cm3.5 mm <br />0.0035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
30 cm300 mm <br />0.3 m <br /> (40 cm400 mm <br />0.4 m <br />) +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
Illustrated +
persistent +
pilose;glabrous +
Anemonastrum +, Anemonidium +, Anemonoides +, Hepatica +, Jurtsevia +  and Pulsatilla +
Anemone tuberosa +
species +
petiolulate;sessile +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
caudex-like +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
2-9-flowered +
herbaceous +  and woody +