Downingia laeta (Greene) Greene
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TAXONOMY
 
Family: Campanulaceae
Genus: Downingia
 
Species Synonyms: none
Common Names: calico-flower
Great Basin calicoflower
Great Basin downingia
bright downingia
 
DISTRIBUTION
 
Canada: southeastern Alberta - southwestern Saskatchewan
Saskatchewan: southwestern Saskatchewan; Cypress Hills, Great Sand Hills - Rosetown
Ecoregion: Cypress Upland, Mixed Grassland, Moist Mixed Grassland
 
HABITAT
 
Saskatchewan: alkaline or saline mudflats, roadsides and cultivated field depressions
Associated Species: awl-leaf mudwort, common spikerush, Engelmann’s spikerush, golden dock, longstem waterwort, narrowleaf dock, narrowleaf water plantain, spreading yellowcress
 
RARITY STATUS
 
Provincial Status According
to Harms (2003):
Threatened
Nature Conservancy Status:
G5 S1S2
Saskatchewan Species at
Risk Status:
None
COSEWIC Status:
None
 
Calico-flower is threatened because it is rare in the province and is regionally restricted to two general regions of the province. This species is usually locally numerous within limited areas.
 
SPECIES DESCRIPTION
 
Height: 5 – 15 cm
Roots: fibrous
Stems: annual, often reclining, branched, hairless, sometimes rooting at nodes
Leaves: on the stem, alternate, sessile, 7 – 12 mm long, 2 – 4 mm wide, oblong to elliptic, falling off at time of flowering
Inflorescence: flowers without stalks, in axils of upper leaves or bracts
Flowers: sepals leaf-like, nearly distinct; petals irregular, 5-parted (2 lobes above, 3 below), not split, 4 – 7 mm long, not longer than sepals, white to pale blue or violet with darker blue veins, whitish throat spotted with yellow; anthers and filaments united to form cylinder around style, joined to the petals, 2 anthers bristle-tipped; ovary inferior, 1 – 2 cm long, looks like fattened stalk
Fruits: capsule pod-like, 1-chambered
 
KEY TO THE CAMPANULACEAE IN SASKATCHEWAN
 
1 Petals regular; anthers and filaments distinct
Campanula
1 Petals irregular; anthers and filaments united
2
   
2 Annuals; flowers without stalks; petals not split; capsule with one chamber
Downingia
2 Perennials; flowers distinctly stalked; petals split to near base on upper side; capsule with two chambers
Lobelia