﻿Farwell: Michigan Species of Polygonatum 255 



Moist grounds in woods or in shady places. Virginia: 

 Greene. Michigan: Belle Isle, Detroit River, June, 1893, Farwell 

 1150b; Parkdale Farm, June, 1914, Farwell 3676, 3677, 3682, 

 3683. The most developed form of the species. 



Polygonatum biflorum ovatum var. nov. 

 Salomonia commutata (in part) Farwell, Rep. Com. Parks Detroit 



11: 53. 1900. 



Differs from the above in having smaller ovate to elliptical 

 leaves (18-37 mm. wide by 7-5-IO cm. long), with fewer conspicu- 

 ous nerves (seven to nine) and short stems (4-6 mm. in diameter 

 and 4.5-6 dm. in length), often with a foliaceous, sheathing bract 

 ia-12 cm. below the first leaf, and generally smaller flowers (4-8 

 mm. wide by 14-18 mm. long). [Plate 16, A.] 



Open, rather dry woods and fields. Michigan: Belle Isle, 

 Detroit River, June, 1893, Farwell 1150a; near Rochester, June, 

 1914, Farivell 3674, 3678, 3679. 



Polygonatum ellipticum sp. nov. 



Whole plant glabrous; stems about 9 dm. in height, the naked 

 lower portion (3.5 dm.) shorter than the leafy part (5.2 dm.) and 

 ancipital, the cross-section being elliptical in outline (6 X 10 mm.), 

 whence the specific name; leaves about twenty, ovate-lanceolate 

 (25-37 mm. wide by 7.5-10 cm. long), five to nine more or less 

 prominent nerves, semi-amplexicaul, sessile; peduncles slender, up 

 to 60 mm. in length with very unequal pedicels up to 25 mm. 

 from four-flowered in the lower to one-flowered in the uppermost; 

 flowers yellowish white, 16-20 mm. long by 4-5 mm. wide. 

 [Plate 16, B.] 



Dry fields and pastures. Michigan: Rochester, June, 1914, 

 Farwell 3673. 

 Polygonatum canaliculatum (Muhl.) Pursh, Fl. Amer. Sept. 



234. 1814; Kunth, Enumeration 5: 134. 1850 

 Convallaria canaliculata Muhl. in Willd. Hort. Berol. 45. 1816. f 

 Polygonatum multiflorum j8 americanum (in part) Hook. Fl. Bor. 



Am. 2: 176. 1840. 



Whole plant glabrous; stems cylindrical, 6-10 mm. in diam- 

 eter, about 10 dm. high, equally divided between the naked lower 

 portion and the upper leafy part; leaves about fourteen, ovate to 

 elliptical, 30-55 mm. wide by 10-14 cm., with nine to thirty-one 

 more or less conspicuous nerves, semi-amplexicaul, subsessile or 



