Asarum marmoratum

Piper

Proc. Biol. Soc. Wash. 29: 99. 1916.

Endemic
Treatment appears in FNA Volume 3.

Rhizomes erect or ascending, deeply buried, internodes 0.2-1.5 cm. Leaves: petiole 5-20 cm, sparsely crisped-hirsute. Leaf-blade almost always variegate with white or silver along veins, cordate to cordate-reniform, 4-14 × 3-12 cm, apex acute to broadly acuminate, rarely obtuse; surfaces abaxially sparsely hirsute, adaxially glabrous or sparsely hirsute along veins, marginal hairs ± perpendicular to margin. Flowers erect or nearly so; peduncle 1.2-1. calyx-tube subglobose, externally mottled red, sparsely to moderately hirsute, internally dark red, with purple hairs; distal portion of sepal erect or spreading at anthesis, 17-52 mm, apex filiform-attenuate, abaxially pale green, hirsute, adaxially tan or brownish green, rarely red proximally, puberulent with crisped purple hairs; pollen-sacs 0.8-2.4 mm, sterile tip of connective on inner stamens dark redbrown, 1.2-3.8 mm, longer than pollen-sacs.


Phenology: Flowering late winter–spring (Mar–Jun).
Habitat: Understory of dry or mesic forests, or exposed rocky slopes or roadcuts
Elevation: 200-1800 m

Discussion

Asarum marmoratum is found only in the Cascades and the Siskiyou Mountains of southern Oregon and extreme northwestern California (M. R. Mesler and K. L. Lu 1990).

Selected References

None.

Lower Taxa

None.

"broad" is not a number.

... more about "Asarum marmoratum"
red +, brownish green +, tan +  and pale green +
puberulent +  and hirsute +
Alan T. Whittemore +, Michael R. Mesler +  and Karen L. Lu +
dark red +  and mottled red +
merous +  and petaloid +
tubular +
enlarged +
fan--shaped +
Calif. +  and Oreg. +
200-1800 m +
nearly +  and erect +
sessile +  and petiolate +
indehiscent +  and loculicidal +
Understory of dry or mesic forests, or exposed rocky slopes or roadcuts +
crisped +
axillary +  and terminal +
with weak longitudinal ribs +  and smooth +
0.2 cm2 mm <br />0.002 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
4 cm40 mm <br />0.04 m <br /> (14 cm140 mm <br />0.14 m <br />) +
leathery;membranous +
3 cm30 mm <br />0.03 m <br /> (12 cm120 mm <br />0.12 m <br />) +
petiolate +  and simple +
2-ranked +  and alternate +
parietal +, axile +  and placentation +
crisped-hirsute +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Flowering late winter–spring (Mar–Jun). +
4-6-carpellate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
Proc. Biol. Soc. Wash. +
ascending +  and erect +
purple +  and red +
distinct +
spreading +  and erect +
1.7 cm17 mm <br />0.017 m <br /> (5.2 cm52 mm <br />0.052 m <br />) +
hirsute +  and glabrous +
Asarum marmoratum +
species +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
silver +  and white +
deciduous +  and perennial +