Empetrum atropurpureum

Fernald & Wiegand

Rhodora 15: 214. 1913,.

Endemic
Synonyms: Empetrum eamesii subsp. atropurpureum (Fernald & Wiegand) D. Löve Empetrum nigrum var. atropurpureum (Fernald & Wiegand) B. Boivin Empetrum rubrum var. atropurpureum (Fernald & Wiegand) R. D. Good
Treatment appears in FNA Volume 8. Treatment on page 488. Mentioned on page 487, 489.

Branches green, brown, or reddish, distally white-tomentose, eglandular. Leaves ascending, becoming divergent; blade 4–7 mm. Flowers usually bisexual (plants synoecious), sometimes unisexual (plants polygamous); sepals greenish pink, becoming reddish purple. Drupes reddish purple or purple, opaque, 5–9 mm diam. Seeds light-brown, 2–2.5 mm. 2n = 52.


Phenology: Flowering spring.
Habitat: Sand dunes, sandy terraces, exposed mountain slopes near treeline
Elevation: 0-1500 m

Distribution

V8 954-distribution-map.gif

Nfld. and Labr., N.S., P.E.I., Que., Maine, N.H., N.Y., Vt.

Discussion

Empetrum atropurpureum has been found with E. nigrum, which tends to replace E. atropurpureum at higher elevations (P. Zika, pers. comm.). Following J. H. Soper and E. G. Voss (1964), we do not extend the range of E. atropurpureum into the Great Lakes region as done by D. Löve (1960).

Notwithstanding the conclusions of D. Löve (1960), the name Empetrum purpureum Rafinesque has not been formally rejected; perhaps it should be. It has not been used by authors in almost 75 years, most likely because the name E. purpureum cannot be directly typified by a specimen, presumably from Labrador, connected to Rafinesque, thus we are not certain to which plants the name should apply. Interestingly, M. L. Fernald and K. M. Wiegand (1913) reasoned that the purple-fruited plant from Labrador did not belong with E. atropurpureum but with E. nigrum.

Selected References

None.

Lower Taxa

None.

... more about "Empetrum atropurpureum"
David F. Murray +, Virginia Mirré +  and Reidar Elven +
Fernald & Wiegand +
furrowed +  and smooth +
not flaky +
acicular;plane +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
coriaceous +
reddish +, brown +  and green +
white-tomentose +
glabrous or +  and sparsely densely hairy or glandular +
nonfleshy +
rotate to crateriform campanulate cylindric globose or urceolate +
Nfld. and Labr. +, N.S. +, P.E.I. +, Que. +, Maine +, N.H. +, N.Y. +  and Vt. +
opaque +  and reddish purple +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0-1500 m +
undifferentiated +
fusiform +
pendulous +  and erect +
unisexual +  and bisexual +
indehiscent +, septifragal +, loculicidal +  and septicidal +
globose +
Sand dunes, sandy terraces, exposed mountain slopes near treeline +
multicellular +
terminal +  and axillary +
persistent +
revolute;plane;toothed;entire;revolute;plane;toothed;entire +
parietal +, axile +  and placentation +
tenuinucellate +  and unitegmic +
distinct +  and connate +
reduced +
not sticky +
Flowering spring. +
4-5-carpellate +
distinct +
not tailed +  and ovoid +
2mm +  and 2.5mm +
reddish purple +  and greenish pink +
distinct +
procumbent +  and prostrate +
straight +
Empetrum eamesii subsp. atropurpureum +, Empetrum nigrum var. atropurpureum +  and Empetrum rubrum var. atropurpureum +
Empetrum atropurpureum +
Empetrum +
species +
with minute spicules +  and smooth +
achlorophyllous +  and chlorophyllous +
evergreen +, deciduous +  and perennial +
heterotrophic +, autotrophic +  and mycotrophic +