Spiraea betulifolia var. lucida (Dougl. ex Greene) C.L. Hitchc.
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TAXONOMY
 
Family: Rosaceae
Genus: Spiraea
 
Species Synonyms: Spiraea betulifolia ssp. lucida (Dougl. ex Greene) Taylor & MacBryde.
Spiraea lucida Dougl. ex Greene
Common Names: shinyleaf spiraea
wild white meadowsweet
 
DISTRIBUTION
 
Canada: British Columbia – Alberta – southwestern Saskatchewan
Saskatchewan: southwestern Saskatchewan; Cypress Hills
Ecoregion: Cypress Upland
 
HABITAT
 
 Saskatchewan: open lodgepole pine or aspen woods, mostly above shores
Associated species: Picea glauca, Pinus contorta, Populus sp.
 
RARITY STATUS
 
Provincial Status According
to Harms (2003):
Vulnerable
Nature Conservancy Status:
G5T5 S2S3
Saskatchewan Species at
Risk Status:
None
COSEWIC Status:
None
 
Spiraea betulifolia var. lucida is vulnerable because it is rare and highly regionally restricted in Saskatchewan. This species is usually locally numerous within limited areas. No immediate threats are known but may occur in the future.
 
SPECIES DESCRIPTION
 
Height: 30 – 80 cm
Roots: usually rhizomatous
Stems: simple to sparsely branched, erect, glabrous or nearly so; branches erect, smooth, reddish-brown
Leaves: alternate, simple, petiole 4 – 10 mm long, blade 2 – 5 cm long, 1 – 2.5 cm wide, ovate to obovate, apex and base rounded, lustrous and green above, pale below, margin serrate, occasionally slightly lobed; stipules absent
Inflorescence: corymbs terminal, 3 – 8 cm wide, flat-topped, branches glabrous; pedicels 3 – 8 mm long, glabrous
Flowers: actinomorphic, nearly odourless; hypanthium cupulate, glabrous to slightly pubescent; calyx 5-merous, 0.5 – 1 mm long, triangular; corolla 5-merous, about 2 mm long, white or pinkish tinged, apex often notched; stamens 15 – 25, inserted on edge of hypanthium between petals and nectary; ovaries 5, apocarpous
Fruits: aggregate of follicles; follicles glabrous or nearly so; seeds irregularly fusiform, yellowish to reddish-brown
 
SPIRAEA KEY FOR SPECIES FOUND IN SASKATCHEWAN
 
1 Inflorescence flat-topped; leaves ovate to obovate, margin coarsely serrate
S. betulifolia var. lucida
1 Inflorescence elongate; leaves oblanceolate, tapering at both ends, margin finely serrate
S. alba