Anemone oregana
Anemone tuberosa
blue windflower, bog anemone, Oregon anemone, Oregon windflower, western wood anemone, western wood anenome
desert anemone, desert windflower, tuber anemone
5-30(-35) cm, from rhizomes, rhizomes horizontal.
10-30(-40) cm, from caudex-like tubers, tubers ascending to vertical.
0-1, ternate;
petiole 4-20 cm;
terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-5(-6) × 0.7-2.5(-3.5) cm, base narrowly cuneate, margins sharply serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces strigose to nearly glabrous;
lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.4-10 mm wide.
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 1-2x-parted and/or -lobed; ultimate lobes 4-8(-12) mm wide.
1-flowered;
peduncle proximally glabrous, distally villous to pilose;
involucral bracts 3, 1-tiered, ternate, ±similar to basal leaves, bases distinct;
terminal leaflet sessile to petiolulate, oblanceolate to rhombic, oblong, or ovate, 1-8 × 0.8-3(-3.5) cm, bases narrowly cuneate to cuneate, margins crenate to serrate on distal 1/2(-2/3), apex acuminate to acute, surfaces abaxially glabrous or strigose, adaxially nearly glabrous to strigose;
lateral leaflets unlobed or 1x-lobed; ultimate lobes 0.5-10 mm wide.
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 1-2x-parted and/or -lobed; ultimate lobes 1.5-2.5 mm wide.
sepals 5-7(-8), blue to purple, reddish, or purple to pink (rarely nearly white or abaxially reddish, violet, or marginally purple, adaxially white), ovate, oblong, or elliptic, 10-20 × 5-8(-10) mm, glabrous;
stamens 30-75.
sepals 8-10, pink to white, linear-oblong, 10-14(-20) × (2-)3-5(-6) mm, sparsely hairy;
stamens 50-60.
body oblong to ellipsoid, 4-5 × 1.5-2 mm, not winged, puberulous to pilose, rarely glabrous;
beak ±straight, (0.5-)1-1.5 mm, glabrous.
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.
nearly spheric;
pedicel (1.5-)2-5(-7) cm.
fusiform;
pedicel (5-)7-15(-22) cm.
=16.
Anemone oregana
Anemone tuberosa
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stamens 30–60; abaxial color of sepals same as adaxial color; margins of involucral bracts similar to those of basal leaves. | var. oregana |
1. Stamens 60–75; abaxial color of sepals different from adaxial color; margins of involucral bracts more coarsely serrate than those of basal leaves. | var. felix |
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WA
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
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