Welcome to the new Michigan Flora site! This new site offers several benefits over the previous website, including real coordinate mapping, giving a clearer view of the density of documentation as well as …

University of Michigan Herbarium [email protected] | phone 734.615.6200

Species reported in print from Michigan for which substantiating specimens have not been traced are only mentioned when these reports postdate the publication of Michigan Flora.

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Our most thoroughly documented counties in southernmost Michigan, for example, are Kalamazoo and Washtenaw, both with over 1600 species, Berrien Co. with over 1500 species recorded, and Kent, …

Esri, USGS | Esri, TomTom, Garmin, FAO, NOAA, USGS, EPA, USFWS

1. Petals (10-) 12-18 (-22) mm long, much exceeding the sepals, the margin densely ciliate at the base; anthers 2-3 mm long; perennials from a strong rhizome. 2. Stem with 1-2 pairs of petioled leaves; …

Mature fruit is essential for distinguishing our species of Nasturtium, and a number of collections are here not mapped because they are vegetative or their fruits are too immature. Watercress is a well …

R. P. Ownbey, is known only from a few collections from the vicinity of Algonac (St. Clair Co.) and neighboring Ontario, all other Michigan plants are evidently tetraploid and can be recognized as var. …

A list of these species is provided at the end of the section "The Information." In six cases where species have both native and alien components in Michigan, there is a strong reason for separately treating …