208 THE GREAT LAKES BOTANIST Vol. 56

NOTEWORTHY COLLECTIONS TWO NORTHWARD RANGE EXTENSIONS IN LEELANAU COUNTY, MICHIGAN

Liana N. May [email protected]

Collinsonia canadensis L. Richweed

Significance of Report. Significant range extension northward. Previous Knowledge. is widespread in the eastern United States and Canada, ranging from Florida to Ontario and westward to Mis - souri, southern Michigan, Illinois, and southeastern Louisiana, though it is ab - sent from much of the southeastern coastal plain. It is presumed extirpated in Wisconsin (SX), possibly extirpated in New Hampshire (SH), and rare in Ver - mont and Louisiana (S2) (Kartesz 1994, NatureServe 2015). The global conser - vation status is ranked as secure (G5) though roughly half of the range, includ - ing Michigan, has not been reviewed and ranked (NatureServe 2015). It is found in mesic deciduous forests and occasionally in deciduous swamps (Voss and Reznick 2012). Several medicinal uses of this herb have been documented (Hamel et al 1975; Herrick 1977). Discussion. One small colony of Collinsonia canadensis was documented during the summer of 2010 along the border of a rich conifer swamp and old field in the Cedar River Preserve in Leelanau County, Michigan, which is owned by the Leelanau Conservancy. Though this has been collected throughout Southern Lower Michigan, this is the first collection north of Saginaw and Kent Counties, thereby significantly extending the range northward. This is the north - ernmost record, not only for Michigan, but also possibly for the United States (Kartesz 2015). Collectors should be aware that this species may be found in in - termediary counties and in northwestern Lower Michigan. Diagnostic Characteristics. Collinsonia canadensis is the only species of Collinsonia in Michigan. It can be distinguished from other species in Lami - aceae by its combination of tall stature, broadly ovate leaves, and loosely-flow - ered terminal racemes of pale yellow, bilaterally symmetrical, flowers that have a fringed lower lip. The pedicels extend beyond the minute subtending bract. The two fertile stamens are long-exerted, and the style is gynobasic. The spreads by stout rhizomes. The leaves have a lemon-like fragrance (Voss and Reznicek 2012). Specimen Citation. Michigan. Leelanau Co: NW¼ of NE¼ Sec. 9, T28N R12W. Cedar River Preserve, 1.5 mi east of Cedar, 0.5 mi south of S. Lake Lee - 2017 THE GREAT LAKES BOTANIST 209 lanau Rd. One small colony of approx. 20 individuals along upland edge of the rich coniferous swamp at the border of old farm field on mesic soils in partial shade. 44º50 ¢47.90 ¢¢N, 85º46 ¢06.30 ¢¢W ± 6 m. WGS 84. 186 m elevation. Associ - ates: Thuja occidentalis, Pteridium aquilinum, Bromus inermis . July 15, 2010. May 005 (MICH).

Vaccinium corymbosum L. Ericaeae Highbush blueberry

Significance of Report. Significant range extension northward. Previous Knowledge. Vaccinium corymbosum is a native blueberry of wet sandy or peaty areas, wetland forests, shrublands, bogs, fens, and rarely oak forests in the eastern United States and Canada (Voss and Reznicek 2012; Kartesz 1994). In the U.S., native populations are concentrated in southern Michigan, New England, the mid-Atlantic states, and the Atlantic and Gulf coastal plain from southeastern Virgina to eastern Texas (Kartesz 2015). This species is secure globally (G5), but declining in several regions, including New Brunswick, Illinois, and Oklahoma, where it is critically imperiled (S1), and Quebec, where it is vulnerable (S3) (Kartesz 1994, NatureServe 2015). The blue - berries of commerce are derived from cultivars of this species in North America, which are often planted beyond its native range. Discussion. During the growing season of 2016, three individual shrubs of Vaccinium corymbosum were found in a hardwood–conifer swamp at Soper Nat - ural Area in the northern quarter of Leelanau County, Michigan, which is owned by the Leelanau Conservancy,. This extends the range of V. corymbosum north - ward from Mason County. Commercial plantations of this blueberry are common in Leelanau and Benzie counties, including on several remnant farms that are now within Sleeping Bear Dunes National Lakeshore; these populations were not been included in the Lakeshore’s flora (Hazlett 1991). The population at Soper Natural Area does not appear to have spread from cultivation. The are isolated within a large wetland of native flora, and, though the parcel was his - torically a farmstead, it was used for grazing cattle and there is no record of blue - berry cultivation. Collectors should be aware that this species may occur across northern Lower Michigan and should be looked for in similar wetland habitats. Diagnostic Characteristics. Vaccinium corymbosum is easily distinguished from other species of Vaccinium in Michigan, since it is the only species greater than one meter in height. The corollas are large, 6.5–8.5 mm long, and the leaves are mostly 4–5.5 cm long (Voss and Reznicek 2012). Specimen Citation. Michigan, Leelanau Co: S½ of NE¼ Sec 4, T31N R11W, Leelanau Township. Soper Natural Area, one mile southwest of the village of Northport on Johnson Rd. Fifty meters N of Johnson Rd, 0.4 mi W of the M-22 intersection in hardwood-conifer swamp. 45.1207753ºN, -85.6306608ºW, WGS 84, ± 10 m., 204 m elevation. Associated plants: Larix laricina, Thuja occiden - talis, Linnaea borealis, Cypripedium reginae, Gaultheria procumbens, and Py - rola asarifolia. July 14, 2016. May 148 (MICH). 210 THE GREAT LAKES BOTANIST Vol. 56

LITERATURE CITED Hamel, P. B., and M. U. Chiltoskey. (1975). Cherokee plants and their uses: A 400 year history. Her - ald Publishing Co., Sylva, North Carolina. Hazlett, B.T. (1991). The Flora of Sleeping Bear Dunes National Lakeshore, Benzie and Leelanau Counties, Michigan. The Michigan Botanist 30: 139–207. Herrick, J. W. (1977). Iroquois medical . PhD Thesis, State University of New York, Albany. Kartesz, J. T. (1994). A synonymized checklist of the vascular flora of the United States, Canada, and Greenland, second edition. Timber Press, Portland, Oregon. Kartesz, J. T. (2015). The Biota of North America Program (BONAP). North American Plant Atlas . Chapel Hill, North Carolina. [maps generated from Kartesz, J.T. 2015. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP). (in press)]. Available at http://bonap.net/napa . (Accessed December 5, 2016) NatureServe. (2015). NatureServe Explorer: An online encyclopedia of life. Version 7.1. Nature - Serve, Arlington, Virginia. Available at http://explorer.natureserve.org. (Accessed December 5, 2016 ). Voss, E. G., and A. A. Reznicek. (2012). Field manual of Michigan flora. University of Michigan Press, Ann Arbor.