Plants and Animals
Sagittaria brevirostra Short-beaked Arrowhead
Perennial floating-leafed aquatic, difficult to distinguish from other Sagittaria spp. without flowers or fruits; leaves arrow-shaped, 10 to 30 cm long, up to 20 cm wide; basal lobes equal to or longer than terminal lobe; bracts under flowers greater than 1.0 cm long; fruit an achene with beak at least 0.5 mm long and usually curved-ascending; sepals bent backward when in fruit.
Status and Rank
US Status: No Status/Not Listed
State Status: SC - Special Concern (rare or uncertain; not legally protected)
Global Rank: G5 - Secure
State Rank: SX - Presumed extirpated
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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.
Found in marshes in shallow waters and muddy shores.
Natural Community Types
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.
Water-shield (Brasenia schreberi), yellow pond-lily (Nuphar advena), sweet-scented waterlily (Nymphaea odorata), pondweed (Potamogeton nodosus), and pickerelweed (Pontederia cordata).
A verified specimen has not been collected since 1861. One possible collection in 1950 has yet to be substantiated. A status survey is warranted in inland wetlands with standing water, focusing in Michigan’s Lower Peninsula. Protect habitat and maintain wetland hydrology and natural cycle of fluctuations. Periodic natural drawdowns due to low water levels increase flower production and may replenish the seed bank. Agricultural run-off has negative impacts and increases competition among species, especially with invasive species. Nutrient pollution should be minimized. Control invasive species, particularly Phragmites.
Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.
Survey Period: From first week of July to fourth week of September
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