CPC National Collection Plant Profile
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Napaea dioica
Family: |
Malvaceae |
Common Name: |
glade mallow |
Author: |
L. |
Growth Habit: |
Forb/herb |
CPC
Number: |
2925 |
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Primary
custodian for this plant in the CPC National Collection of Endangered
Plants is: |
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Lindsey Parsons contributed to this Plant Profile. |
Napaea dioica
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This mallow species produces attractive white flowers in June and July (NatureServe Explorer 2002) and is cultivated for ornamental purposes by a number of nurseries. After the last glaciation, N. dioica expanded its range via riparian corridors (Botany2001 website 2002). Its range has become extremely limited as its habitat is ideal for farming and so has been plowed throughout most of its historic range (NatureServe Explorer 2002). As populations have become more fragmented and isolated from each other, riparian corridors have again become increasingly important in maintaining gene flow in this population (Botany2001 website 2002).
Distribution
& Occurrence |
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State Range
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Illinois
Indiana
Iowa
Minnesota
Ohio
Wisconsin |
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Habitat
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It is often found in alluvial meadows along streams and rivers or in areas of moist, rank, weedy vegetation, sometimes including shrubs (WIS 2002, NatureServe Explorer 2002).
In Illinois Actinomeris alternifolia, Amorpha fruticosa, Campanula americana, Celtis occidentalis, Elymus virginicus, Eupatorium rugosum, Rudbeckia laciniata, Silphium perfoliatum are considered associate species (Swink and Wilhelm 1979). In Wisconsin associates include Silphium perfoliatum, Thalictrum dasycarpum, Aster spp., Solidago spp., and Helianthus spp (NatureServe Explorer 2002). |
Distribution
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District of Columbia, Illinois, Indiana, Iowa, Minnesota, Ohio, Vermont, Wisconsin, and Virginia (NatureServe 2001). |
Number Left
State/Area
Protection
| |
State/Area |
Rank |
Status |
Date |
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Illinois |
S3 |
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9/28/1989 |
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Indiana |
S2 |
ST |
9/11/1986 |
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Iowa |
S2.1 |
T |
2/29/1988 |
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Minnesota |
E |
T |
11/15/1995 |
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Ohio |
S3 |
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Wisconsin |
S3 |
NONE |
6/23/1992 |
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Conservation,
Ecology & Research |
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Ecological
Relationships
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Pollinators include several genera of Hymenopterans: Bombus, Lasioglossum, and Andreana; and Dipterans from the Syrphidae and Calliphoridae. |
Threats
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Destruction of habitat for agriculture
Flood control
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Current Research Summary
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J.P. Wenger and J.C. La Duke presented a paper at the 2001 botany meeting providing genetic data (based on microsatellite markers) highlighting the importance of riparian corridors in maintaining healthy population dynamics of N. dioica by allowing gene flow between populations and providing access to new areas for expansion after the last glaciation. (Wenger and LaDuke 2001) |
Current Management Summary
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The Illinois Department of Conservation: Natural Heritage Division began monitoring N. dioica in 1988 as part of its endangered plant monitoring system |
Research Management Needs
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Nearly all aspects of the life cycle of this species are unknown
The potential for asexual reproduction
The existence of seed banks for this species
The cause of the edge affect on seed set in habitat fragments (reduced set at edges)
Light requirements for sexual reproduction
Optimal habitat conditions
Maintenance of free-flowing streams which are thought to provide good conditions for seedling establishment
Protection of riparian corridors
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Ex Situ Needs
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Controlled studies of germination requirements and seedling establishment |
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Books (Single Authors)
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Deam, C.M. 1984. Flora of Indiana. Indianapolis, Indiana: Division Forestry, Department of Conservation. 1236p.
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Gleason, H.A. 1952. The New Britton and Brown illustrated flora of the northeastern United States and adjacent Canada. New York, NY: Hafner Press. 1732p.
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Gray, A.; Fernald, M.L. 1987. Gray's manual of botany: a handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Portland, Or.: Dioscorides Press. 1632p.
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Swink, F.; Wilhelm, G. 1994. Plants of the Chicago Region. Lisle, Illinois: The Morton Arboretum. 922p.
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Books (Sections)
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Kartesz, J.T. 1999. A synonymized checklist of the vascular flora of the U.S., Canada, and Greenland. In: Kartesz, J.T.; Meacham, C.A., editors. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden. Chapel Hill, NC.
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Conference Proceedings
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Wenger, J.P.; La Duke, J.C. Genetic structure and isolation-by-distance suggest a role for riparian corridors in the post-glacial natural history of Napaea dioica L. (Malvaceae). Botany 2001 "Plants and People"; August 12 - 16, 2001; Albuquerque Convention Center, Albuquerque, New Mexico. 2001.
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Electronic Sources
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WIS. (2002). Wisconsin Vascular Plants--on species, including maps and photos. Wisconsin State Herbarium: University of Wisconsin - Madison (WIS). http://www.botany.wisc.edu/wisflora/. Accessed: 2002.
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Journal Articles
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Bunten, E.I. 1930. Studies on Sex Determination in Napea dioica. American Doctoral Dissertations. Source code: S0262: page 0066.
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Iltis, H.H. 1963. Napaea dioica (Malvaceae): whence came the type?. American Midland Naturalist. 70, 90-109
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Krebs, G. 1993. On the taxonomic status of Napaea dioica L. Feddes Repertorium. 104, 7-8: 465-467.
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Root, T.W. 1985. Addition to the vascular flora of Rock Island County Illinois USA. Transactions of the Illinois State Academy of Science. 78, 3-4: 281-284.
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Schwegman, J.E. 1988. Illinoensis. Newsletter of the Illinois Native Plant Conservation Program. 4, 1: 4?.
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Utech, F.H. 1970. Preliminary reports on the flora of Wisconsin. No. 60. Tiliaceae and Malvaceae - basswood and mallow families. Wisconsin Academy of Sciences, Arts and Letters. 58: 301-332.
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Wieboldt, T.F.; Fleming, G.P.; Ludwig, J.C.; Huber, F.C. 1998. Virginia. Castanea. 63, 1: 82-91.
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Reports
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Robertson, Kenneth R.; Phillippe, Loy R. 1992. The current status of Napaea dioica L. in Illinois. Champaign, Illinois: Illinois Natural History Survey. p.14. Center for Biodiversity Technical Report 1992(3).
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TNC. 1987. The Nature Conservancy Stewardship Abstracts. The Nature Conservancy. p.104.
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This
profile was updated on 3/4/2010 |
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