Malaxis monophyllos (L.) Sw.
White Adder's Mouth, White Adder's Tongue
Facts About
Accepted Synonyms: Malaxis brachypoda, Malaxis diphyllos
Malaxis monophyllos, or White Adder's Mouth, has a wide distribution across northern Canada and the United States, from southern Alaska to Newfoundland and around the Great Lakes, with disjunct populations in California and Colorado. It bears a single leaf and a slender inflorescence of minute, white or greenish yellow flowers which can either have a resupinate or non-resupinate labellum, depending on the variety. This orchid usually grows in wet areas such as bogs or swamps where its small size and green coloration make it virtually indistinguishable from the surrounding vegetation.
Malaxis monophyllos is globally considered secure, although it is considered rare in several states throughout its range.
Pollination
This orchid is pollinated by fungus gnats.
Notes on Subspecies and Varieties
Two varieties of Malaxis monophyllos have been recognized and are easily distinguished by the position of the lip.
Malaxis monophyllos var. monophyllos, the typical variety, is found throughout Europe and Asia but is restricted in North America to Alaska and British Columbia. This variety has the lip in the uppermost position in the flower.
Malaxis monophyllos var. brachypoda is found throughout North America and has resupinate flowers, with the lip in the lowermost position in the flower.
Ecosystem Type
Bogs, cliffs balds or ledges, fens, forests, grassland, meadows, ridges or ledges, stream bank, swamps
Characteristics
- Habitat:
- terrestrial
- Leaf arrangement:
-
- alternate
- stem
- Number of leaves on stem:
-
- one
- two
- three
- Form of the labellum:
- the labellum is not pouch-like
- Labellum outline:
- the labellum is lobed
- Main color of labellum:
-
- green to brown
- white
- yellow
- Nectar spur:
- absent
- Inflorescence type:
- the inflorescence is a raceme
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- 1.3–2.2 mm
- Sepal length:
- 1.5–2.5 mm
- Plant height:
- 3–30 cm
-
Flowers
- Floral bract length:
- 1.5–2 mm
- Flower petal color:
-
- green
- white
- yellow
- Flower symmetry:
- the flower is zygomorphic
- Flowering date:
-
- June
- July
- August
- Flowers per inflorescence:
- 12–100
- Form of the labellum:
- the labellum is not pouch-like
- Hairs on flower stalk:
- the pedicel is hairless
- Hairs on inflorescence axis:
- the inflorescence stem is hairless
- Inflorescence length:
- 10–120 mm
- Inflorescence type:
- the inflorescence is a raceme
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- 1.3–2.2 mm
- Labellum outline:
- the labellum is lobed
- Labellum position:
-
- the flowers are non-resupinate
- the flowers are resupinate
- Length of flower stalk:
- 2–4.5 mm
- Length of peduncle:
- 100–250 mm
- Lobes at base of labellum:
- 1.4–2 mm
- Lower petal strongly red-veined:
- no
- Main color of labellum:
-
- green to brown
- white
- yellow
- Nectar spur:
- absent
- Number of stamens:
- 1
- Orientation of side petals:
-
- the lateral petals are ascending
- the lateral petals are spreading
- Self-pollinating flowers:
- there are no cleistogamous flowers
- Sepal length:
- 1.5–2.5 mm
- Sepals fused only to sepals:
- the sepals are separate from one another
- Spots on labellum:
- no
-
Fruits or seeds
- Fruit length:
- 3–5 mm
- Fruit width:
- Up to 3 mm
- Seed capsule orientation:
- the capsule points upwards or outwards
-
Growth form
- Plant height:
- 3–30 cm
- Roots:
- the rhizomes are non-coralloid
- Underground organs:
-
- slender roots
- 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 shorter than the associated flower
- Leaf arrangement:
-
- alternate
- stem
- Leaf blade edges:
- the leaf edges are entire
- Leaf blade length:
- 15–100 mm
- Leaf blade length to width ratio:
- 2–3
- Leaf blade shape:
-
- elliptic
- oblong
- ovate
- Leaf blade tip:
-
- the tip of the leaf blade is acute
- the tip of the leaf blade is obtuse
- Leaf blade width:
- 5–50 mm
- Leaves during flowering:
- leaves are present during flowering
- Number of leaves on stem:
-
- one
- two
- three
-
Place
- Ecosystem type:
-
- bogs
- cliffs balds or ledges
- fens
- forests
- grasslands
- meadows
- ridges or ledges
- stream banks
- swamps
- Habitat:
- terrestrial
- Location:
-
- Alaska
- Alberta
- British Columbia
- California
- Colorado
- Connecticut
- Illinois
- Indiana
- Maine
- Manitoba
- Massachusetts
- Michigan
- Minnesota
- New Brunswick
- New Hampshire
- New Jersey
- New York
- Newfoundland and Labrador
- Northwest Territories
- Nova Scotia
- Ontario
- Pennsylvania
- Prince Edward Island
- Quebec
- Saskatchewan
- Vermont
- Washington
- Wisconsin
-
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 | Secure |
US Status | N/A |
Canadian Status | Secure |
Conservation status for: Alberta | |
---|---|
Global Rank | Secure |
US Status | N/A |
Alberta Rank | State Rare |
Alberta Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Alaska | |
---|---|
Global Rank | Secure |
US Status | N/A |
Alaska Rank | Apparently Secure |
Alaska Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: British Columbia | |
---|---|
Global Rank | Secure |
US Status | N/A |
British Columbia Rank | Secure |
British Columbia Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: California | |
---|---|
Global Rank | Secure |
US Status | N/A |
California Rank | Highly State Rare |
California Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Colorado | |
---|---|
Global Rank | Secure |
US Status | N/A |
Colorado Rank | Apparently Secure |
Colorado Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Connecticut | |
---|---|
Global Rank | Secure |
US Status | N/A |
Connecticut Rank | N/A |
Connecticut Status | Endangered |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Illinois | |
---|---|
Global Rank | Secure |
US Status | N/A |
Illinois Rank | Highly State Rare |
Illinois Status | Extirpated |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Indiana | |
---|---|
Global Rank | Secure |
US Status | N/A |
Indiana Rank | N/A |
Indiana Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Massachusetts | |
---|---|
Global Rank | Secure |
US Status | N/A |
Massachusetts Rank | N/A |
Massachusetts Status | Endangered |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Manitoba | |
---|---|
Global Rank | Secure |
US Status | N/A |
Manitoba Rank | State Rare |
Manitoba Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Maine | |
---|---|
Global Rank | Secure |
US Status | N/A |
Maine Rank | Highly State Rare |
Maine Status | Endangered |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Michigan | |
---|---|
Global Rank | Secure |
US Status | N/A |
Michigan Rank | N/A |
Michigan Status | Species of Concern |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Minnesota | |
---|---|
Global Rank | Secure |
US Status | N/A |
Minnesota Rank | Watch List |
Minnesota Status | Species of Concern |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: New Brunswick | |
---|---|
Global Rank | Secure |
US Status | N/A |
New Brunswick Rank | State Rare |
New Brunswick Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: New Hampshire | |
---|---|
Global Rank | Secure |
US Status | N/A |
New Hampshire Rank | Possible Extirpated |
New Hampshire Status | Endangered |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: New Jersey | |
---|---|
Global Rank | Secure |
US Status | N/A |
New Jersey Rank | Possible Extirpated |
New Jersey Status | Endangered |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Newfoundland and Labrador | |
---|---|
Global Rank | Secure |
US Status | N/A |
Newfoundland and Labrador Rank | Watch List |
Newfoundland and Labrador Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Nova Scotia | |
---|---|
Global Rank | Secure |
US Status | N/A |
Nova Scotia Rank | Secure |
Nova Scotia Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Northwest Territories | |
---|---|
Global Rank | Secure |
US Status | N/A |
Northwest Territories Rank | N/A |
Northwest Territories Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: New York | |
---|---|
Global Rank | Secure |
US Status | N/A |
New York Rank | N/A |
New York Status | Historical |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Ontario | |
---|---|
Global Rank | Secure |
US Status | N/A |
Ontario Rank | Secure |
Ontario Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Pennsylvania | |
---|---|
Global Rank | Secure |
US Status | N/A |
Pennsylvania Rank | Highly State Rare |
Pennsylvania Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Quebec | |
---|---|
Global Rank | Secure |
US Status | N/A |
Quebec Rank | Watch List |
Quebec Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Saskatchewan | |
---|---|
Global Rank | Secure |
US Status | N/A |
Saskatchewan Rank | State Rare |
Saskatchewan Status | N/A |
Canadian Status | Secure |
Wetland Status | N/A |
Conservation status for: Vermont | |
---|---|
Global Rank | Secure |
US Status | N/A |
Vermont Rank | State Rare |
Vermont Status | Threatened |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Washington | |
---|---|
Global Rank | Secure |
US Status | N/A |
Washington Rank | Highly State Rare |
Washington Status | Species of Concern |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |
Conservation status for: Wisconsin | |
---|---|
Global Rank | Secure |
US Status | N/A |
Wisconsin Rank | Watch List |
Wisconsin Status | N/A |
Canadian Status | Secure |
Wetland Status | Facultative Wetland |