Heuchera villosa var. arkansana

(Rydberg) E. B. Smith

Proc. Arkansas Acad. Sci. 31: 100. 1977 ,.

Common names: Arkansas alum-root
Endemic
Basionym: Heuchera arkansana Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 101. 1905
Treatment appears in FNA Volume 8. Treatment on page 90. Mentioned on page 89.

Inflorescences dense, 10–35 (–62) × 1–3 (–4) cm, internodes in floral branchlets 0.3–1 mm. Pedicels 0.2–0.9 mm. Flowers: hypanthium subglobose, glabrous or sparsely long-stipitate-glandular; petals reflexed or tightly coiled, narrowly oblanceolate, 0.2–0.4 mm wide. 2n = 14.


Phenology: Flowering Jun–Sep.
Habitat: Shaded rocks and ledges, granite, gneiss, or acidic humus over limestone or shallow rocky soil
Elevation: 300-900 m

Discussion

Variety arkansana is found in the Ozark Mountains.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

epigynous +, perigynous +  and hypogynous +
rounded +, obtuse +  and acute +
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
(Rydberg) E. B. Smith +
cordate +  and nearly truncate +
Heuchera arkansana +
not papillose +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
(5-)7-9+-lobed +, polygonal +, oblong +, orbiculate +  and rounded-cordate +
3 cm30 mm <br />0.03 m <br /> (26 cm260 mm <br />0.26 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.64 cm6.4 mm <br />0.0064 m <br />) +
3-carpellate +  and 2-carpellate +
Arkansas alum-root +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
300-900 m +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
unisexual +  and bisexual +
bearing 1-5 cauline leaves +  and leafless +
10 cm100 mm <br />0.1 m <br /> (85 cm850 mm <br />0.85 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Shaded rocks and ledges, granite, gneiss, or acidic humus over limestone or shallow rocky soil +
multicellular +
pink +  and white +
long-stipitate-glandular +  and glabrous +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
35 cm350 mm <br />0.35 m <br /> (62 cm620 mm <br />0.62 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
10 cm100 mm <br />0.1 m <br /> (35 cm350 mm <br />0.35 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
bracteate +, not secund +  and 100-1000-flowered +
dense +  and diffuse +
opposite +  and alternate +
ovate;triangular +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
crassinucellate +, unitegmic +  and bitegmic +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
epigynous +, perigynous +  and hypogynous +
distinct +
oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
peltate +  and jointed +
long-stipitate-glandular +
Flowering Jun–Sep. +
unequal +
Proc. Arkansas Acad. Sci. +
dark-brown +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
fusiform +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
green-tipped +
distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 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 +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
long-stipitate-glandular +  and glabrous +
Heuchera villosa var. arkansana +
Heuchera villosa +
variety +
glandular-ciliate +  and ciliate +
crenate +  and dentate +
annual +, biennial +  and perennial +