238 LILIACEAE 



6. Polygonatum [Tourn.] Mill. (Salomonia Heist.) 



Leaves pubescent beneath; filaments filiform, roughened. I. P. biflorum. 



Leaves glabrous; filaments somewhat flattened, smooth. 2. P. commutatum. 



1. P. biflorum (Walt.) Ell. In woods and thickets: N. B. to 



Ont., Mich., Fla., W. Va. and Tenn. 



Conn. Throughout. 



N. Y. Throughout, but unknown south of the moraine on L. I. 



N. J. Not definitely known from the coastal plain, thence increas- 

 ing and common northward. 



Pa. Throughout. 



Tertiary, 0: Cretaceous, 0: Older Formations, common. 118- 



204 days. Sea level-2,800 ft. 



2. P. commutatum (R. & S.) Dietr. In woods and along 



streams, frequently in dry soil: Ont. to Manit., Utah, south 

 to R. I., Ga., La., N. Mex. and Ariz. In our range not so 

 common as the preceding. 



Throughout the range. 



7. Medeola L. 



1. M. virginiana L. In moist woods and thickets: N. S. to Ont., 

 Minn., Fla. and Tenn. 



Throughout the range, apparently increasing in southwestern 

 Conn, and decreasing in southern N. J., particularly in the pine- 

 barrens. 



8. Trillium L. 



Leaves sessile or narrowed at the base and short petioled. 



Petals obovate or oblanceolate, white or pink. T. grandiflorum* 



Petals ovate or lanceolate, 1-3 cm. long. 



Peduncles 3-10 cm. long, erect or declined; petals 



spreading. 1. T. erectum. 



Peduncles 3 cm. long or less, recurved beneath the leaves; 



petals recurved. 2. T. cernuum. 



Leaves distinctly petioled, obtuse or rounded at the base. 3. T. undulatum. 



i. T. erectum L. In rich woods: N. S. to James' Bay, Manit., 

 N. Car. and Tenn. 

 Conn. Throughout, more common westward and northward, rare 



southeastward. 

 N. Y. On L. I., north of the moraine, but rare; S. I., Westchester 



Co., increasing and common northward. 



* This species is keyed in because, while it has never been authentically reported from 

 the range, it is to be expected from the Catskills and from the mountains of Pa. 



