Overview

Distribution

St. Pierre and Miquelon; Nfld., N.S., Que.
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Physical Description

Morphology

Description

Shrubs , spreading, dwarfed, to ca. 0.5 m. Bark dark brown, smooth, close; lenticels pale, inconspicuous, circular. Twigs without taste and odor of wintergreen, moderately to densely pubescent, not conspicuously resin-coated, without large, warty, resinous glands. Leaf blade obovate--reniform, with 2--3 pairs of lateral veins, 0.5--1 × 0.5--1.2 cm, base cuneate, margins deeply crenate-dentate, apex broadly rounded to nearly truncate; surfaces abaxially usually glabrous. Infructescences erect, short-cylindric, 0.5--1 × 0.5--0.8 cm, shattering with fruits in fall; scales unlobed (lateral lobes sometimes present but greatly reduced), glabrous. Samaras with wings not apparent or reduced to narrow ridges.
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Diagnostic Description

Synonym

Betula terra-novae Fernald
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Ecology

Habitat

Sphagnum bogs, around pools, and wet peaty meadows; 0--700m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering late spring.
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Betula michauxii

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Wikipedia

Betula michauxii

Betula michauxii, Newfoundland dwarf birch, is a species of birch which is native to Newfoundland from which it got introduced to Nova Scotia and Quebec.[1] The species is 0.5 metres (1 ft 8 in) tall and have a wintergreen smell. The leaves are obovate and have glabrous surface. Infructescence is cylindric, erect, short, and 0.5–0.8 centimetres (0.20–0.31 in) long. The fruits ripe by fall and are as glabrous as the leaves.[2]

References[edit]

  1. ^ "Newfoundland dwarf birch". USDA. Plants Profile. Retrieved December 2, 2013. 
  2. ^ Betula michauxii 3. Flora of North America. 

Further reading[edit]


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Notes

Comments

This infrequent dwarf birch is distinguished from Betula nana mostly on the basis of its reduced infructescence scales and wetter habitat (J. J. Furlow 1984), characteristics that are also occasionally noted in B . nana . It perhaps might better be treated as a race of that species; in the absence of thorough study of this complex, however, it seems best to follow the traditional treatment (M. L. Fernald 1950c; J. Rousseau and M. Raymond 1950).
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