Heuchera chlorantha

Piper

Contr. U.S. Natl. Herb. 16: 206. 1913 ,.

Common names: Tall meadow narrow-flowered or green-flowered alum-root
Endemic
Treatment appears in FNA Volume 8. Treatment on page 101. Mentioned on page 84, 85, 86.

Herbs acaulescent; caudex branched. Flowering-stems 40–110 cm, long-stipitate-glandular. Leaves: petiole long-stipitate-glandular; blade broadly ovate to nearly orbiculate, shallowly 5–7-lobed, 3–8 cm, base deeply cordate, lobes rounded, margins dentate, apex obtuse, surfaces long-stipitate-glandular. Inflorescences dense. Flowers: hypanthium slightly bilaterally symmetric, free to 1 mm, green, broadly campanulate, inflated distal to adnation to ovary, 6–11 mm, short-stipitate-glandular and sparsely long-stipitate-glandular, densely papillate inside; sepals erect, darker green-tipped, equal, 4–6 mm, apex obtuse or rounded; petals absent or 1–5, erect, green, narrowly lanceolate, unlobed, 1.2–1.4 mm, margins entire; stamens included 2–3 mm; (filaments erect, straight, stout, ca. 3 times length of anthers); styles included 2–2.5 mm, 0.5–1 mm, 0.1+ mm diam. Capsules ovoid, 10–12 mm, beaks divergent, not papillose. Seeds dark-brown, ellipsoid, 0.6–0.9 mm, finely spiny. 2n = 14.


Phenology: Flowering May–Aug.
Habitat: Grassy, rocky bluffs along shore lines, margins of forest openings, rocky stream banks
Elevation: 100-1200 m

Discussion

Heuchera chlorantha occurs in the Pacific Northwest north to the Queen Charlotte Islands of British Columbia. Inland, it occurs from the eastern base of the Cascade Mountains westward in Oregon and Washington. A putative hybrid between H. chlorantha and H. micrantha var. diversifolia, named H. ×easthamii Calder & Savile, has been reported in the Hazelton region of British Columbia. The leaf form and capsule size are intermediate between those of the two parents, both of which occur in the region.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Heuchera chlorantha"
epigynous +, perigynous +  and hypogynous +
rounded +  and obtuse +
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
cordate +
not papillose +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
5-7-lobed +, broadly ovate +  and nearly orbiculate +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
3-carpellate +  and 2-carpellate +
Tall +, meadow +, narrow-flowered +  and or green-flowered alum-root +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
B.C. +, Oreg. +  and Wash. +
100-1200 m +
unisexual +  and bisexual +
bearing 1-5 cauline leaves +  and leafless +
40 cm400 mm <br />0.4 m <br /> (110 cm1,100 mm <br />1.1 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Grassy, rocky bluffs along shore lines, margins of forest openings, rocky stream banks +
multicellular +
long-stipitate-glandular +  and short-stipitate-glandular +
inflated +  and campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
bracteate +, not secund +  and 100-1000-flowered +
dense +  and diffuse +
opposite +  and alternate +
rounded +
entire +  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 +
distinct +
1 +  and 5 +
unlobed +  and lanceolate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
peltate +  and jointed +
long-stipitate-glandular +
Flowering May–Aug. +
unequal +
Contr. U.S. Natl. Herb. +
dark-brown +
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 />) +
darker green-tipped +
distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
unbranched +  and branched +
persistent +
horizontal +  and erect +
connate +  and distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
long-stipitate-glandular +
Heuchera chlorantha +
Heuchera +
species +
glandular-ciliate +  and ciliate +
crenate +  and dentate +
annual +, biennial +  and perennial +