Erythranthe michiganensis

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Erythranthe michiganensis
Michigan monkey flower imported from iNaturalist photo 218965717 on 16 February 2024.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Phrymaceae
Genus: Erythranthe
Species:
E. michiganensis
Binomial name
Erythranthe michiganensis
(Pennell) G.L.Nesom

Erythranthe michiganensis (formerly Mimulus glabratus var. michiganensis and Mimulus michiganensis) [1] [2] [3] is a rare species of flowering plant in the lopseed family, known by the common name Michigan monkeyflower. This species occurs only in the Grand Traverse and Mackinac Straits areas within the American state of Michigan. [4] [5] [6] [7] [8] It is one of only three plant species that are endemic to Michigan, [9] with the other two being Voss's Goldenrod [10] and Packera insulae-regalis. [11] [12] [13]

Contents

It is restricted to a specific type of habitat (wet areas with a calcium-containing substrate), [9] and one that is being degraded and lost to development. It was federally listed as an endangered species of the United States in 1990. [14]

Description

Erythranthe michiganensis is an aquatic or semi-aquatic plant and produces mat-like clumps of decumbent stems up to 36 centimeters long. The stems root at the nodes that come in contact with wet substrate and send up new stems from there. Many clumps containing hundreds of stems may all belong to a single genetic individual. [4] The oppositely-arranged leaves have toothed edges. Flowers grow from the leaf axils, each borne on a pedicel, the length of which is often longer than the leaves. [3]

The tubular yellow flower is 1.6 to 2.7 centimeters long and has a wide mouth with two lobes on the upper lip and three on the lower lip. The lower lip and throat may be speckled with red. The lower lip is coated in yellow hairs. It serves as a landing spot for pollinating insects; [3] however, the plant produces little viable pollen, so it is likely that most of the reproduction is vegetative via stolons, rather than sexual via seed. [14] Biological dispersal then takes place as pieces break off and float downstream. [3] Blooming occurs in mid-June through mid-July, and sometimes extends into August, [14] or rarely September [4] or October. [3]

Distribution

Michigan monkeyflower near Traverse City, 2022 Michigan monkey flower imported from iNaturalist photo 218965865 on 16 February 2024.jpg
Michigan monkeyflower near Traverse City, 2022

Erythranthe michiganensis is found almost exclusively on the shores of the Great Lakes (Lake Michigan and Lake Huron), or what were ancient shorelines. [9] [14] It grows on lakesides and stream banks in wet, saturated soils or in very shallow water. [14] It requires cold, clear flowing water in full sunlight. [4] The substrate is sand covered in muck, often with calcium compounds below. [4] [9] It also appears to require a narrow pH range that is slightly alkaline. [3] The habitat is the edges of forests dominated by northern white cedar (Thuja occidentalis). Other plants in the area may include touch-me-not (Impatiens capensis), water forget-me-not (Myosotis scorpioides), watercress (Nasturtium officinale), wild mint (Mentha arvensis), and marsh marigold (Caltha palustris).

There are seventeen known occurrences of this plant, but two of these have not been observed recently. [3] The largest occurrences are at Glen Lake, Burt Lake, and the shoreline of Mackinac County. [3] It can be found at Sleeping Bear Dunes National Lakeshore. [14] Many of the occurrences are on privately owned land. [14] One population was located after a biologist found a specimen used as a garnish on his plate at a restaurant. [14]

The plant has proven resilient at times; it has been noted to persist in dry conditions and after being mowed when it appeared in the lawn of a home. [15] It can also live without sunlight in darker areas of the forest understory, albeit in sterile form. [3]

Conservation

This rare plant depends on a continuous flow of cold, clear spring water. It is threatened by human activities that disrupt this flow, such as groundwater pumping and diversion and natural processes such as storms and periodic high lake levels. Degradation of the habitat is also a threat, and may come from residential development and recreational use. Development has caused the extirpation of at least three occurrences. [14] Conservation efforts will require direct protection of plants and prevention of alterations to the local water regime. [3] Because the plant probably uses cloning as its primary method of reproduction, the number of genetically-different individuals is probably low, making populations more vulnerable. [4]

Related Research Articles

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<i>Erythranthe dentata</i> Species of flowering plant

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<i>Erythranthe filicaulis</i> Species of flowering plant

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<i>Erythranthe floribunda</i> Species of flowering plant

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<i>Erythranthe gracilipes</i> Species of flowering plant

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Erythranthe inflatula, synonyms Mimulus inflatulus and Mimulus evanescens, is a rare species of monkeyflower known by the common name disappearing monkeyflower. It is native to the western United States, where it is known from about ten locations in and around the Great Basin within the states of Idaho, Oregon, and California; it is also found in Nevada. Specimens of the plant had been catalogued as Mimulus breviflorus, but on further examination it was evident that they were a separate, unclassified species; this was described to science in 1995. It is thought that the plant may have evolved via hybridization between Erythranthe breviflora and Erythranthe latidens, or that it evolved from E. latidens and then into E. breviflora.

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<i>Erythranthe parishii</i> Species of flowering plant

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References

  1. ↑ Posto, A. L.; Prather, L. A. (2003). "The Evolutionary and Taxonomic Implications of RAPD Data on the Genetic Relationships of Mimulus michiganensis (Comb. et stat. nov.: Scrophulariaceae)". Systematic Botany. 28 (1): 172–8. doi:10.1043/0363-6445-28.1.172 (inactive 2024-09-18). JSTOR   3093946.{{cite journal}}: CS1 maint: DOI inactive as of September 2024 (link)
  2. ↑ "Mimulus michiganensis". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved January 19, 2018.
  3. 1 2 3 4 5 6 7 8 9 10 "Mimulus michiganensis" (PDF). Archived from the original (PDF) on 2011-08-17. Michigan Natural Features Inventory.
  4. 1 2 3 4 5 6 "Erythranthe michiganensis (Michigan Monkeyflower)". NatureServe Explorer 2.0. Retrieved 2023-08-06.
  5. ↑ Barker, W. L. (Bill); et al. (2012). "A Taxonomic Conspectus of Phyrmaceae: A Narrowed Circumscription for MIMULUS, New and Resurrected Genera, and New Names and Combinations" (PDF). Phytoneuron. 39: 1–60. ISSN   2153-733X.
  6. ↑ Beardsley, P. M.; Yen, Alan; Olmstead, R. G. (2003). "AFLP Phylogeny of Mimulus Section Erythranthe and the Evolution of Hummingbird Pollination". Evolution. 57 (6): 1397–1410. doi:10.1554/02-086. JSTOR   3448862. PMID   12894947. S2CID   198154155.
  7. ↑ Beardsley, P. M.; Olmstead, R. G. (2002). "Redefining Phrymaceae: the placement of Mimulus, tribe Mimuleae, and Phryma". American Journal of Botany. 89 (7): 1093–1102. doi:10.3732/ajb.89.7.1093. JSTOR   4122195. PMID   21665709.
  8. ↑ Beardsley, P. M.; Schoenig, Steve E.; Whittall, Justen B.; Olmstead, Richard G. (2004). "Patterns of Evolution in Western North American Mimulus (Phrymaceae)". American Journal of Botany. 91 (3): 474–4890. doi: 10.3732/ajb.91.3.474 . JSTOR   4123743. PMID   21653403.
  9. 1 2 3 4 "Mimulus michiganensis - Michigan Flora". Michigan Flora. Retrieved 2023-08-06.
  10. ↑ "Solidago vossii - Michigan Flora". Michigan Flora. Retrieved 2021-02-10.
  11. ↑ "Packera insulae-regalis - Michigan Flora". Michigan mlive t. Retrieved 2021-02-10.
  12. ↑ McWhirter, Sheri (2023-07-29). "The rarest wildflower in Michigan thrives on Beaver Island". MLive Media Group. Retrieved 2023-08-06.
  13. ↑ "Mimulus michiganensis (Michigan monkey flower) - Michigan Natural Features Inventory". Michigan Natural Features Inventory. Retrieved 2023-08-06.
  14. 1 2 3 4 5 6 7 8 9 United States Fish and Wildlife Service (June 21, 1990). "Determination of endangered status for Mimulus glabratus var. michiganensis (Michigan monkeyflower)" (PDF). Federal Register .
  15. ↑ "Michigan Monkeyflower (Erythranthe michiganensis)". Center For Plant Conservation. Retrieved 2023-08-06.
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