| Prunus alleghaniensis var. davisii |
| Alleghany or Sloe Plum |
Key Characteristics
Small straggly clonal shrub (to 3 m) of pine barrens and dry prairies; stem with persistent thorny, black branches; leaves narrowly elliptic with acute (not elongated) tips, finely toothed and glandless on the margins; flowering very early with 5 white petals and glandless sepals.
Status and Rank
- State Status: SC - Special Concern (rare or uncertain; not legally protected)
- State Rank: S3 - Vulnerable
- Global Rank: G4T3Q
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Alcona | 3 | 2002 |
| Cheboygan | 1 | 1931 |
| Crawford | 13 | 2005 |
| Iosco | 1 | 2002 |
| Lake | 3 | 2002 |
| Lenawee | 2 | 1986 |
| Manistee | 4 | 2003 |
| Mason | 4 | 2004 |
| Montcalm | 2 | 2006 |
| Montmorency | 3 | 1993 |
| Newaygo | 4 | 2006 |
| Oceana | 2 | 1986 |
| Ogemaw | 4 | 1992 |
| Oscoda | 37 | 2004 |
| Otsego | 1 | 1993 |
| Roscommon | 2 | 2005 |
![Occurrence Map for [Sname]](https://webarchive.library.unt.edu/eot2008/20090116131625im_/http://web4.msue.msu.edu/mnfi/maptmp/NFR_Distributions12321115664680.png)
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.
Habitat
Alleghany plum is found in pine barrens, oak-pine savanna, and oak savanna remnants. It often occurs along road right-of-ways, driveway cuts, and edges of more closed canopy forest.
Natural Community Types
Associated Plants
Big bluestem, little bluestem, Pennsylvania sedge, tower mustard, whorled milkweed, Ohio horse mint, old field balsam, hairy hawkweed, dwarf dandelion, rough blazing star, cylindrical blazing star, blue toadflax, wild lupine, horsemint, racemed milkwort, panic grass, Venus looking glass, black cherry, prairie willow, sand cherry, wintergreen, Canada mayflower, and Hill's thistle.
Management
The habitat of this species has been severely degraded and diminished. Conservation and restoration of native prairie remnants is necessary. This species likely requires natural disturbances associated with prairie habitat such as prescribed fire and brush removal.
General Survey Guidelines
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.
Survey Methods
- Meander search
Survey Period: From first week of April to fourth week of August
More Information
See MNFI Species AbstractReferences
Survey References
- Elzinga, C.L., D.W. Salzer, and J.W. Willoughby. 1998. Measuring and Monitoring Plant Populations. The Nature Conservancy and Bureau of Land Management, Denver. BLM Technical Reference 1730-1. 477pp.
- Goff, G.F., G.A. Dawson, and J.J. Rochow. 1982. Site examination for Threatened and Endangered plant species. Environmental Management 6(4): 307-316
- Nelson, J.R. 1984. Rare Plant Field Survey Guidelines. In: J.P. Smith and R. York. Inventory of rare and endangered vascular plants of California. 3rd Ed. California Native Plant Society, Berkeley. 174pp.
- Nelson, J.R. 1986. Rare Plant Surveys: Techniques For Impact Assessment. Natural Areas Journal 5(3):18-30.
- Nelson, J.R. 1987. Rare Plant Surveys: Techniques for Impact Assessment. In: Conservation and management of rare and endangered plants. Ed. T.S. Elias. California Native Plant Society, Sacramento. 8pp.
Technical References
- Gleason, H. A., and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second edition. The New York Botanical Garden, Bronx. 910pp.
- Gray, A. 1950. Gray's Manual of Botany; eighth ed. Van Nostrand Reinghold, New York. 1632pp.
- Holmgren, N.H. 1998. Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the vascular plants of Northeastern United States and adjacent Canada. New York Botanical Garden, Bronx. 937pp.
- Voss, E. G. 1985. Michigan Flora. Part II. Dicots (Saururaceae-Cornaceae). Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 724pp.