Arceuthobium pusillum Peck | Species Image Gallery (opens in a new window) |
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TAXONOMY | |||||||||
Family: | Viscaceae | ||||||||
Genus: | Arceuthobium | ||||||||
Species Synonyms: | Razoumofskya pusilla (Peck) Kuntze | ||||||||
Common Names: | dwarf mistletoe eastern mistletoe |
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DISTRIBUTION | |||||||||
Canada: | east-central Saskatchewan – Manitoba – Ontario – Quebec – Newfoundland | ||||||||
Saskatchewan: | east-central Saskatchewan; Armit – Pasquia Hills | ||||||||
Ecoregion: | Mid-Boreal Lowland | ||||||||
HABITAT | |||||||||
Saskatchewan: | parasitic on white spruce trees or other conifers | ||||||||
Associated Species: | black spruce, jackpine, white spruce | ||||||||
RARITY STATUS | |||||||||
Provincial
Status According to Harms (2003): |
Endangered |
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Nature Conservancy Status: | G5 S1 |
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Saskatchewan
Species at Risk Status: |
None |
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COSEWIC Status: | None |
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Dwarf mistletoe is endangered because of rarity in Saskatchewan. This species is regionally restricted to eastern Saskatchewan and population sizes vary. Immediate or probable threats have been identified. | |||||||||
SPECIES DESCRIPTION | |||||||||
Growth Habit: | parasitic on conifers, but also with chlorophyll | ||||||||
Height: | 5 – 20 mm high | ||||||||
Stems: | fragile, simple to branched, greenish-brown or brown | ||||||||
Leaves: | opposite, simple, minute, scale-like, | ||||||||
Inflorescence: | flowers in axillary pairs, male and female flowers on separate plants | ||||||||
Flowers: | male flowers with tepals 3; female flowers with tepals 2 | ||||||||
Fruits: | about 2 mm long | ||||||||
Other: | often causing “witches broom” | ||||||||
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