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| Rhus glabra L. | Species Image Gallery (opens in a new window) |
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| TAXONOMY | |||||||||||||||||
| Family: | Anacardiaceae | ||||||||||||||||
| Genus: | Rhus | ||||||||||||||||
| Species Synonyms: | Rhus borealis Greene Rhus calophylla Greene Rhus glabra var. laciniata Carr. Rhus glabra var. occidentalis Torr. |
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| Common Names: | smooth sumac | ||||||||||||||||
| DISTRIBUTION | |||||||||||||||||
| Canada: | southern British Columbia, east-central Saskatchewan - Quebec, not known from Alberta | ||||||||||||||||
| Saskatchewan: | east-central Saskatchewan near the Manitoba border | ||||||||||||||||
| Ecoregion: | Churchill River Upland | ||||||||||||||||
| HABITAT | |||||||||||||||||
| Saskatchewan: | dry, rocky, south-facing slopes | ||||||||||||||||
| 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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| Smooth sumac is endangered in Saskatchewan because it is extremely rare. There is only one, locally sparse population in the province. No immediate threats are known for this species but may occur in the future. | |||||||||||||||||
| SPECIES DESCRIPTION | |||||||||||||||||
| Height: | to 3 m tall (20 – 40 cm in Saskatchewan) | ||||||||||||||||
| Roots: | taproots to 2.5 m deep; rhizomes branched | ||||||||||||||||
| Stems: | multi-stemmed, thicket-forming shrub; woody; bark hairless, sometimes with a whitish bloom, brown-gray, smooth with numerous raised, corky, lens-shaped areas and scaly ridges with age; younger stems reddish; small rounded buds with light brown hairs | ||||||||||||||||
| Leaves: | no stipules; alternate, pinnately compound, 30 - 50 cm long (20 - 30 cm in SK), main axis wingless | ||||||||||||||||
| Leaflets: | opposite, sessile or nearly so, 11 - 23 (9 - 13 in SK), lance-shaped, tapering to a point at the tip, tapering to a sharp or blunt point at base, hairless, margin saw-toothed | ||||||||||||||||
| Inflorescence: | perfect and unisexual flowers on the same plant; terminal, (7) 10-25 cm long dense, many flowered; central axis and leaf stalks with long woolly hairs | ||||||||||||||||
| Flowers: | five sepals, petals, and stamens; pale greenish petals; superior ovary | ||||||||||||||||
| Fruits: | drupe, 3.5-4.5 mm long, red, viscid-pubescent; seed 3-3.5 mm long, yellowish, smooth | ||||||||||||||||
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