Plants and Animals
Triphora trianthophora Nodding pogonia or three birds orchid
Small orchid (10-20 cm) of rich woods; stem purple, leaves ovate and green; flowers few (1-6), white to pale pink, lip with three bright green crests.
Status and Rank
State Status: T - Threatened (legally protected)
Global Rank: G3G4 - Rank is uncertain, ranging from vulnerable to apparently secure
State Rank: S1 - Critically imperiled
|County||Number of Occurrences||Year Last Observed|
Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.
Three-birds orchid is found in rich oak-hickory forests and old wooded dune forests with well developed humus layers.
For each species, lists of natural communities were derived from review of the nearly 6,500 element occurrences in the MNFI database, in addition to herbarium label data for some taxa. In most cases, at least one specimen record exists for each listed natural community. For certain taxa, especially poorly collected or extirpated species of prairie and savanna habitats, natural community lists were derived from inferences from collection sites and habitat preferences in immediately adjacent states (particularly Indiana and Illinois). Natural communities are not listed for those species documented only from altered or ruderal habitats in Michigan, especially for taxa that occur in a variety of habitats outside of the state.
Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.
White oak, beech, sugar maple, yellow birch, hemlock, paper birch, hickory, black cherry, red oak, red maple, white ash, spicebush, rattlesnake fern, shining clubmoss, Canada mayflower, hop hornbeam, blue-beech, wood nettle, jumpseed, lady fern, woodfern, red and white baneberry, bishop's cap, woolly blue violet, ginseng, and wild sarsaparilla.
Management needs are poorly known. This species may require large forest tracts where natural disturbance processes are allowed to proceed unhindered, and it may be susceptible to excessive logging activities.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgement of the investigator.
Survey Period: From fourth week of July to fourth week of September
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