Geum calthifolium

Smith in A. Rees

in A. Rees, Cycl. 16: Geum no. 13. 1810.

Common names: Caltha-leaved avens
Treatment appears in FNA Volume 9. Treatment on page 64. Mentioned on page 60, 63.

Plants subscapose. Stems 8–40 cm, sparsely hirsute proximally, puberulent throughout. Leaves: basal 5–25 cm, blade strongly lyrate-pinnate, sometimes simple, major leaflet 1, minor leaflets 1–7, terminal leaflet much larger than minor laterals; cauline 1.5–4.5 cm, stipules not evident, blade bractlike, not resembling basal, simple. Inflorescences 1–2 (–4) -flowered. Pedicels downy, hirsute, eglandular. Flowers erect; epicalyx bractlets 2–6 mm; hypanthium green or green with slight maroon tinge; sepals erect-spreading, 6–11 mm; petals spreading, yellow, obcordate-obdeltate to nearly orbiculate, 9–13 mm, longer than sepals, apex broadly and shallowly emarginate. Fruiting tori sessile, glabrous. Fruiting styles wholly persistent, not geniculate-jointed, 9–14 mm, apex not hooked, pilose in basal 3/4, eglandular. 2n = 42.


Phenology: Flowering summer.
Habitat: Muskegs, moist meadows, heathlands, moist sites on rocky slopes, ledges, and cliffs
Elevation: 0–1500 m

Distribution

V9 90-distribution-map.jpg

B.C., Alaska, e Asia (Russian Far East)

Discussion

Geum calthifolium hybridizes with G. rossii [= G. ×macranthum (Kearney ex Rydberg) B. Boivin]; see discussion under 4. G. schofieldii.

Selected References

None.

Lower Taxa

None.
... more about "Geum calthifolium"
eglandular +  and sessile +
pilose +  and glabrous +
Joseph R. Rohrer +
Smith in A. Rees +
compound +  and simple +
opposite +  and alternate +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
not simple +  and simple +
bractlike +
free +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
Caltha-leaved avens +
B.C. +, Alaska +  and e Asia (Russian Far East) +
not +  and aggregated +
0–1500 m +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
tapered +, ovoid +  and fusiform +
0.2 cm2 mm <br />0.002 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Muskegs, moist meadows, heathlands, moist sites on rocky slopes, ledges, and cliffs +
maroon tinge +  and green +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
odd-pinnate +, lyrate-pinnate +, 3-foliolate +  and simple +
opposite +  and alternate +
winter-persistent +
cauline +  and basal +
cordate +, reniform +, orbiculate +, oblanceolate +, obovate +, oblong +, elliptic +  and rhombic +
palmate +  and pinnate +
crenate +, dentate +, laciniate +, 2-7-lobed +, flat +, lobed +, toothed +  and entire +
inferior +  and superior +
clustered +, biseriate +  and superposed +
hirsute +  and downy +
purple-veined +
0 (?) +  and 4 (?) +
free +  and distinct +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering summer. +
adnate +, free +, connate +  and distinct +
in A. Rees, Cycl. +
not arillate +
persistent +
free +  and distinct +
erect-spreading +
deltate-lanceolate +, deltate-ovate +  and deltate +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
free +  and distinct +
1 +  and 5 +
8 cm80 mm <br />0.08 m <br /> (40 cm400 mm <br />0.4 m <br />) +
palmate +  and pinnate +
adnate +  and free +
geniculate-jointed +  and entire +
persistent +
distinct +
elongating +
basal +, lateral +, subterminal +  and terminal +
hairy +  and glabrous +
not hooked +  and hooked +
accrescent +
10 cm100 mm <br />0.1 m <br /> (?) +
Acomastylis +, Erythrocoma +, Novosieversia +  and Stylypus +
Geum calthifolium +
species +
inconspicuous +
hemispheric +  and cylindric +
enlarged +
not geniculate-jointed +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
hairy +  and glabrous +