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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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| Rhus glabra is endangered in Saskatchewan because it is extremely rare. There is only one, locally sparse population in the province. No immediate threats are known at the present time 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 glabrous, sometimes with glaucous bloom, brown-gray, reddish on younger stems, smooth, numerous lenticels, developing scaly ridges with age; small rounded buds with light brown hairs | ||||||||||||||||
| Leaves: | estipulate, alternate, pinnately compound, 30 - 50 cm long (20 - 30 cm long in SK), rachis wingless | ||||||||||||||||
| Leaflets: | opposite, sessile or nearly so, 11 - 23 (9 - 13 in SK), lanceolate, acute to acuminate tip, acute to obtuse base, glabrous, serrate margins | ||||||||||||||||
| Inflorescence: | terminal; dense many-flowered panicle; rachis and petiole lanate, (7) 10 - 25 cm long | ||||||||||||||||
| Flowers: | perfect and unisexual flowers on the same plant; pentamerous, pale greenish, superior ovary; July | ||||||||||||||||
| Fruits: | drupe, 3.5-4.5 mm long, red, viscid-pubescent; seed 3-3.5 mm long, yellowish, smooth | ||||||||||||||||
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