Heuchera maxima

Greene

Bull. Calif. Acad. Sci. 2: 149. 1886 ,.

Common names: Jill of the rocks
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 93. Mentioned on page 84, 87, 94.

Herbs caulescent; caudex branched. Flowering-stems 9–30 cm, short or long-stipitate-glandular, viscid. Leaves: petiole (7–22 cm), densely long-stipitate-glandular; blade pentagonal to septagonal, deeply 5-lobed, 6.3–17 cm, base deeply cordate, lobes rounded, margins crenate, apex obtuse, surfaces long-stipitate-glandular abaxially, glabrous adaxially except long-stipitate-glandular near margins, viscid. Inflorescences dense. Flowers: hypanthium radially symmetric, free 0.3–1.4 mm, white to pink, hemispheric, 2.5–4.2 mm, densely long-stipitate-glandular; sepals somewhat spreading, green or red-tipped, equal, 0.7–2 mm, apex rounded or truncate, (medium to long-stipitate-glandular); petals spreading, white, oblong-lanceolate, (clawed), unlobed, 2–4 mm, margins entire; stamens exserted 0.4–2.5 mm; styles exserted to 2 mm, 1.5–4 mm, 0.1+ mm diam. Capsules ovoid, 4–8 mm, beaks divergent, not papillose. Seeds black, broadly fusiform, 0.4 mm. 2n = 14.


Phenology: Flowering Mar–May.
Habitat: Exposed cliffs
Elevation: 0-500 m

Discussion

Of conservation concern.

Heuchera maxima is found on the northern Channel Islands (Anacapa, Santa Cruz, Santa Rosa), Santa Barbara County.

Heuchera maxima is in the Center for Plant Conservation’s National Collection of Endangered Plants.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Heuchera maxima"
epigynous +, perigynous +  and hypogynous +
truncate +, rounded +  and obtuse +
Elizabeth Fortson Wells +  and Barbara Greene Shipes +
Greene +
cordate +
not papillose +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
pentagonal +  and deeply 5-lobed +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
3-carpellate +  and 2-carpellate +
Jill of the rocks +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
0-500 m +
unisexual +  and bisexual +
bearing 1-5 cauline leaves +  and leafless +
9 cm90 mm <br />0.09 m <br /> (30 cm300 mm <br />0.3 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Exposed cliffs +
multicellular +
white +  and pink +
long-stipitate-glandular +
hemispheric +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
bracteate +, not secund +  and 100-1000-flowered +
dense +  and diffuse +
opposite +  and alternate +
long-stipitate-glandular +
rounded +
long-stipitate-glandular +
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 +
unlobed +  and oblong-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
peltate +  and jointed +
stipitate-glandular +  and glabrous +
Flowering Mar–May. +
unequal +
Bull. Calif. Acad. Sci. +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
fusiform +
0.4 cm4 mm <br />0.004 m <br /> (?) +
red-tipped +  and green +
distinct +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Endemic +  and Conservation concern +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
unbranched +  and branched +
persistent +
horizontal +  and erect +
connate +  and distinct +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrous +  and long-stipitate-glandular +
Heuchera maxima +
Heuchera +
species +
glandular-ciliate +  and ciliate +
crenate +  and dentate +
annual +, biennial +  and perennial +