Heuchera richardsonii

R. Brown in J. Franklin et al.

in J. Franklin et al., Narr. Journey Polar Sea, 766, plate 29. 1823,.

Common names: Richardson’s alum-root
IllustratedEndemic
Synonyms: Heuchera richardsonii var. affinis Rosendahl, Butters & Lakela Heuchera richardsonii var. grayana Rosendahl, Butters & Lakela Heuchera richardsonii var. hispidior Rosendahl, Butters & Lakela
Treatment appears in FNA Volume 8. Treatment on page 96. Mentioned on page 84, 85, 88, 94, 95.

Herbs acaulescent; caudex branched. Flowering-stems (7–) 20–95 cm, densely long-stipitate-glandular. Leaves: petiole densely or sparsely long or short-stipitate-glandular; blade broadly ovate or cordate, deeply 5–7-lobed, 2.5–10 cm, base cordate or nearly truncate, lobes rounded, margins dentate, apex acute, surfaces long-stipitate-glandular abaxially, glabrous or long-stipitate-glandular adaxially. Inflorescences dense to diffuse. Flowers: hypanthium strongly bilaterally symmetric, free 2–7 mm, green, campanulate, abruptly inflated distal to adnation to ovary, 5–14 mm, short-stipitate-glandular; sepals erect, green-tipped, equal, 1.3–4.2 mm, apex rounded (sinuses wider than petals); petals erect, green or greenish white, rarely pink, narrowly spatulate, unlobed, 1.3–4 mm, margins finely dentate or coarsely fimbriate; stamens 1.5 mm included to 4 mm exserted; styles from 0.6 mm included to 0.3 mm exserted, 4–6 mm, to 0.1 mm diam. Capsules ovoid, 7–14.5 mm, beaks divergent, not papillose. Seeds dark or very dark-brown, ellipsoid, 0.6–0.9 mm. 2n = 14, 28.


Phenology: Flowering May–Jun.
Habitat: Moist or dry, low or upland prairies, basic rock outcroppings and bluffs, sandy, dry woods
Elevation: 200-800 m

Distribution

V8 187-distribution-map.gif

Alta., B.C., Man., N.W.T., Ont., Sask., Colo., Ill., Ind., Iowa, Kans., Mich., Minn., Mo., Mont., Nebr., N.Dak., Okla., S.Dak., Wis., Wyo.

Discussion

Heuchera richardsonii intergrades with H. americana where their ranges overlap in Arkansas, Illinois, Indiana, Michigan, Missouri, and Oklahoma; the intergrading form is recognized here as H. americana var. hirsuticaulis.

Heuchera hispida (H. americana var. hispida here; see thereunder) was confused with H. richardsonii for almost a hundred years, until C. O. Rosendahl et al. (1933) pointed out that the plants from the Midwest then passing as H. hispida Pursh were distinct from Pursh’s species and were H. richardsonii.

The Blackfoot, Cree, Lakota, and Woodlands Indians used decoctions and infusions of the roots of Heuchera richardsonii for diarrhea and as an eyewash, and the Lakota applied a poultice of powdered roots to sores (D. E. Moerman 1998).

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Heuchera richardsonii"
epigynous +, perigynous +  and hypogynous +
rounded +  and acute +
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
R. Brown in J. Franklin et al. +
truncate +  and cordate +
not papillose +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
5-7-lobed +, cordate +  and ovate +
2.5 cm25 mm <br />0.025 m <br /> (10 cm100 mm <br />0.1 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.45 cm14.5 mm <br />0.0145 m <br />) +
3-carpellate +  and 2-carpellate +
Richardson’s alum-root +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Sask. +, Colo. +, Ill. +, Ind. +, Iowa +, Kans. +, Mich. +, Minn. +, Mo. +, Mont. +, Nebr. +, N.Dak. +, Okla. +, S.Dak. +, Wis. +  and Wyo. +
200-800 m +
unisexual +  and bisexual +
bearing 1-5 cauline leaves +  and leafless +
7 cm70 mm <br />0.07 m <br /> (20 cm200 mm <br />0.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (95 cm950 mm <br />0.95 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Moist or dry, low or upland prairies, basic rock outcroppings and bluffs, sandy, dry woods +
multicellular +
short-stipitate-glandular +
inflated +  and campanulate +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
bracteate +, not secund +  and 100-1000-flowered +
dense +  and diffuse +
opposite +  and alternate +
rounded +
fimbriate +  and dentate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
crassinucellate +, unitegmic +  and bitegmic +
epigynous +, perigynous +  and hypogynous +
pink +, greenish white +  and green +
distinct +
unlobed +  and spatulate +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
peltate +  and jointed +
short-stipitate-glandular +
Flowering May–Jun. +
unequal +
in J. Franklin et al., Narr. Journey Polar Sea, +
dark-brown +  and dark +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
ellipsoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
green-tipped +
distinct +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
Illustrated +  and Endemic +
exserted +  and included +
4 cm40 mm <br />0.04 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
unbranched +  and branched +
persistent +
horizontal +  and erect +
0 cm0 mm <br />0 m <br /> (0.01 cm0.1 mm <br />1.0e-4 m <br />) +
connate +  and distinct +
exserted +  and included +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
long-stipitate-glandular +  and glabrous +
Heuchera richardsonii var. affinis +, Heuchera richardsonii var. grayana +  and Heuchera richardsonii var. hispidior +
Heuchera richardsonii +
Heuchera +
species +
glandular-ciliate +  and ciliate +
crenate +  and dentate +
annual +, biennial +  and perennial +