Trichocentrum undulatum (Sw.) Ackerman & M.W.Chase
Spotted Mule Eared Orchid
Facts About
Accepted Synonyms: Epidendrum maculatum, Lophiaris maculata, Oncidium undulatum
Trichocentrum undulatum, known as the Spotted Mule Eared Orchid, is known from Florida and is distributed in the West Indies, Mexico, Central America, and northern South America. Individuals consist of a shoot with one tough, leathery, folded leaf. Reproductive individuals produce a large, showy, many-flowered inflorescence with glossy brown to yellow-green flowers that are marked with brown. The plant can reach height of 1-5 m. The flowering period is April-September and plants grow on the trunks and branches of trees, usually buttonwood and mangrove in coastal forests.
Trichocentrum undulatum is endangered in Florida but is apparently secure across its broad range.
Pollination
This orchid is pollinated by female Centris errans that visit the flower in search of food and leave with a pair of pollinia attached to them to deposit on the stigma of the next flower visited.
Ecosystem Type
Forests, swamps, woodlands
Characteristics
- Habitat:
- epiphyte
- Form of the labellum:
- the labellum is not pouch-like
- Labellum outline:
- the labellum is lobed
- Main color of labellum:
-
- green to brown
- pink to red
- white
- yellow
- Nectar spur:
- absent
- Inflorescence type:
- the inflorescence is a panicle
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- Up to 18 mm
- Sepal length:
- 16–17 mm
- Plant height:
- Up to 150 cm
-
Flowers
- Floral bract length:
- Up to 8 mm
- Flower petal color:
-
- brown
- green
- red
- yellow
- Flower symmetry:
- the flower is zygomorphic
- Flowering date:
-
- April
- May
- June
- July
- August
- September
- Flowers per inflorescence:
- 5–60
- 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:
- Up to 200 mm
- Inflorescence type:
- the inflorescence is a panicle
- Labellum characteristics:
- the labellum is lobed
- Labellum length:
- Up to 18 mm
- Labellum outline:
- the labellum is lobed
- Labellum position:
- the flowers are resupinate
- Length of peduncle:
- 80–300 mm
- Lower petal strongly red-veined:
- no
- Main color of labellum:
-
- green to brown
- pink to red
- 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:
- 16–17 mm
- Sepals fused only to sepals:
- the sepals are separate from one another
- Spots on labellum:
- yes
-
Fruits or seeds
- Fruit length:
- 30–60 mm
- Fruit width:
- 15–20 mm
- Seed capsule orientation:
- the capsule bends downwards
-
Growth form
- Epiphyte form:
- pseudobulb
- Plant height:
- Up to 150 cm
- Pseudobulb leaves:
- leaves emerge from the top of the pseudobulb
- Pseudobulb shape:
- elliptic
- Pseudobulb size:
- Up to 1 cm
- Roots:
- the rhizomes are non-coralloid
- myco-heterotrophic or not:
- the plant is chlorophyllous
-
Leaves
- Bract relative length:
- the bract is shorter than the associated flower
- Features of leaves:
- the leaf has a strong bend or joint
- Leaf blade edges:
- the leaf edges are entire
- Leaf blade length:
- 100–850 mm
- Leaf blade shape:
- elliptic
- Leaf blade tip:
- the tip of the leaf blade is acuminate
- Leaf blade width:
- 50–120 mm
- Leaves during flowering:
- leaves are present during flowering
-
Place
- Ecosystem type:
-
- forests
- swamps
- woodlands
- Habitat:
- epiphyte
- Location:
- Florida
-
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: Florida | |
---|---|
Global Rank | Apparently Secure |
US Status | N/A |
Florida Rank | Highly State Rare |
Florida Status | Endangered |
Canadian Status | N/A |
Wetland Status | N/A |