| Androsace occidentalis |
| Rock-jasmine |
Key Characteristics
Inconspicuous annual forb (5-10 cm) of oak barrens; leaves forming a small basal rosette; flowers tiny, white, in umbels on a short stalk.
Status and Rank
- State Status: E - Endangered (legally protected)
- State Rank: SH - Possibly extirpated
- Global Rank: G5 - Secure
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Berrien | 1 | 1931 |
| Cass | 1 | 1931 |
![Occurrence Map for [Sname]](https://webarchive.library.unt.edu/eot2008/20090116095209im_/http://web4.msue.msu.edu/mnfi/maptmp/NFR_Distributions12320993112076.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
Known only from a single collection near Niles in southwestern Lower Michigan, where it was likely collected within an oak barrens or dry prairie.
Natural Community Types
Associated Plants
Few data were noted from the one known site, only described as an old field. It is likely associated with oak savanna and/or dry prairie species.
Management
Little oak savanna habitat remains in southwest Michigan. This species may possibly persist in small remnant habitats, where it could be easily overlooked. It may also remain in habitats similar to those known in Ohio. Management to maintain and restore oak barrens such as prescribed burning and controlling woody brush would be beneficial.
General Survey Guidelines
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator. This is an early blooming species best sought in April.
Survey Methods
- Meander search
Survey Period: From fourth week of April to second week of May
References
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. 1996. Michigan Flora. Part III. Dicots (Pyrolaceae-Compositae). Bulletin of the Cranbrook Institute of Science and University of Michigan Herbarium. 622pp.