Dactylorhiza aristata (Fisch. ex Lindl.) Sóo
Fischer's Orchid, Keyflower
Facts About
Accepted Synonyms: Orchis aristata, Orchis beeringiana, Orchis latifolia var. beeringiana
Dactylorhiza aristata, also known as Fischer's Orchid, is found in Alaska and the Aleutian Islands where it grows in moist open meadows, tundra, bogs, hillsides, alpine slopes, wet peaty seeps, and heath mats. This orchid is variable, with leaves that may be solid purple, solid green or green with purple spots. The terminal raceme emerges before the leaves and is densely flowered, ranging in color from purple to pink to white. The labellum may display purple spots or streaks or be solid. This orchid has no fragrance and is poisonous- livestock are reported to avoid it on Kodiak Island.
Dactylorhiza aristata is apparently secure.
Pollination
The pollinators of this orchid are unknown in North American populations but European populations appear to be capable of self-fertilization and Eurasian populations have been documented as pollinated by insects.
Notes on Subspecies and Varieties
Ecosystem Type
Bogs, meadows, tundra
Characteristics
- Habitat:
- terrestrial
- Leaf arrangement:
- alternate
- Number of leaves on stem:
-
- two
- three
- four
- five
- Form of the labellum:
- the labellum is not pouch-like
- Labellum outline:
- the labellum is lobed
- Main color of labellum:
-
- blue to purple
- pink to red
- white
- Nectar spur:
- present
- Inflorescence type:
- the inflorescence is a raceme
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- 8–12 mm
- Sepal length:
- 8–15 mm
- Plant height:
- Up to 40 cm
-
Flowers
- Floral bract length:
- 15–50 mm
- Flower petal color:
-
- pink
- purple
- red
- white
- Flower symmetry:
- the flower is zygomorphic
- Flowering date:
-
- May
- June
- July
- Flowers per inflorescence:
- Up to 30
- Form of the labellum:
- the labellum is not pouch-like
- Hairs on inflorescence axis:
- the inflorescence stem is hairless
- Inflorescence type:
- the inflorescence is a raceme
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- 8–12 mm
- Labellum outline:
- the labellum is lobed
- Labellum position:
- the flowers are resupinate
- Lower petal strongly red-veined:
- no
- Main color of labellum:
-
- blue to purple
- pink to red
- white
- Nectar spur:
- present
- Nectar spur length:
- 7–15 mm
- Number of stamens:
- 1
- Orientation of side petals:
- the lateral petals are erect
- Pollen sacs:
- the pollinia eventually fragment into smaller parts
- Self-pollinating flowers:
- there are no cleistogamous flowers
- Sepal length:
- 8–15 mm
- Sepals fused only to sepals:
-
- the sepals are fused to each other (not other flower parts), at least near their bases
- the sepals are separate from one another
- Spots on labellum:
-
- no
- yes
-
Fruits or seeds
- Seed capsule orientation:
- the capsule points upwards or outwards
-
Growth form
- Plant height:
- Up to 40 cm
- Roots:
- the rhizomes are non-coralloid
- Underground organs:
- the plant has one or more swollen storage organs underground, such as bulbs, tubers or corms
- myco-heterotrophic or not:
- the plant is chlorophyllous
-
Leaves
- Bract relative length:
- the bract is longer than the associated flower
- Features of leaves:
- N/A
- Leaf arrangement:
- alternate
- Leaf blade edges:
- the leaf edges are entire
- Leaf blade length:
- 30–180 mm
- Leaf blade length to width ratio:
- 3
- Leaf blade shape:
-
- elliptic
- lanceolate
- Leaf blade tip:
- the tip of the leaf blade is acute
- Leaf blade width:
- 10–60 mm
- Leaves during flowering:
- leaves are present during flowering
- Number of leaves on stem:
-
- two
- three
- four
- five
-
Place
- Ecosystem type:
-
- bogs
- meadows
- tundra
- Habitat:
- terrestrial
- Location:
- Alaska
-
Facts and Uses
- Mycorrhiza
- Monitoring
- Propagation
- Restoration
Native to North America
Yes
North American Conservation Status & Distribution
Conservation Status
Conservation and Wetland Status | |
---|---|
Global Rank | Apparently Secure |
US Status | N/A |
Canadian Status | N/A |
Conservation status for: Alaska | |
---|---|
Global Rank | Apparently Secure |
US Status | N/A |
Alaska Rank | Apparently Secure |
Alaska Status | N/A |
Canadian Status | N/A |
Wetland Status | N/A |