Species: Drosera linearis Goldie

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Drosera linearis Goldie

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TAXONOMY

Family:

Droseraceae

Genus:

Drosera

Species Synonyms:

none

Common Names:

narrow-leaved sundew
slenderleaf sundew

DISTRIBUTION

Canada:

southwestern Mackenzie District – southern British Columbia – Alberta – Saskatchewan – Manitoba – southern Ontario – eastern Quebec – Newfoundland

Saskatchewan:

widespread, except in northeastern and southwestern Saskatchewan

Ecoregion:

Athabasca Plain, Mid-Boreal Upland, Boreal Transition, Aspen Parkland

HABITAT

Saskatchewan:

wet bogs or fens

Associated Species:

Campylium stellatum, Carex lasiocarpa, Carex limosa, Carex livida, Limprichta revolvens, Menyanthes trifoliata, Sarracenia purpurea, Scorpidium scorpioides, Trichophorum caespitosum

RARITY STATUS

Provincial Status According
to Harms (2003):

Vulnerable

Nature Conservancy Status:

G5 S2

Saskatchewan Species at
Risk Status:

None

COSEWIC Status:

None

Drosera linearis is vulnerable in Saskatchewan because it is rare or uncommon in the province. This species is wide-ranging, but most local populations are small. No immediate threats are known for Drosera linearis.

SPECIES DESCRIPTION

Height:

fibrous

Roots:

perennial, scapose, erect, arising from centre of rosette, much longer than leaves

Stems:

basal rosette, petioles 2 – 6 cm long, blades 2 – 5 cm long, ~ 2 mm wide, linear, glandular-viscid, often reddish; stipules 5 mm long, adnate to petiole, fimbriate on upper half

Leaves:

cyme circinate, nodding at apex

Inflorescence:

1 – 4; sepals 4 – 5, ~ 5 mm long; petals 4 – 5, ~ 6 mm long, white; stamens 4 – 5; carpels 3 – 5, connate; ovary 1-loculed; styles 3 – 5

Flowers:

capsule loculicidal; seeds many, 0.5 – 0.8 mm long, fusiform

Fruits:

insectivorous

DROSERA KEY FOR SPECIES FOUND IN SASKATCHEWAN

1 Leaf blades round, broader than long; petioles hairy	D. rotundifolia
1 Leaf blades linear to spatulate, longer than broad; petioles smooth	2

2 Leaves linear; seeds 0.5 – 0.8 mm long	D. linearis
2 Leaves spatulate; seeds 1 – 1.5 mm long	D. anglica