Trillium 



LlLIACEAE 



323 



50 



Map 661 



Trillium nivale Riddell 



o 50 



Map 662 

 Trillium grandif lorum (Michx.) Salisb. 



o~~ 50 



Map 663 

 Trillium cernuum 

 var. macranthum Eames & Wieq. 



4. Trillium grandiflorum (Michx.) Salisb. Large-flower Trillium. 

 Map 662. This species is frequent in the northeastern part of the state, 

 becoming infrequent to rare southward. Friesner reports it from Harrison 

 County. It is found mostly in moist woods and is also found in springy 

 places in woods, on moist, wooded slopes, and in marshes. 



W. Vt., w. Que. to Minn., southw. to N. C. and Mo. 



5. Trillium cernuum L. var. macranthum Eames & Wieg. (Rhodora 25 : 

 191. 1923.) Purple-anther Trillium. Map 663. I found a few specimens 

 in a low, wet woods 8 miles east of Michigan City, La Porte County, and 

 Peattie reports finding it in moist woods near Mineral Springs, Porter 

 County. This variety is northern in its general distribution and in Indiana 

 it is found only in the northern counties. 



Vt., Ont. to Sask., southw. to Pa., n. Ind., n. 111., Wis., and Minn. 



6. Trillium Gleasoni Fern. (Rhodora 34: 21. 1932.) (Trillium declina- 

 tum (Gray) Gleason). Map 664. This is our common Trillium found 

 throughout the state. The fact that the peduncles are often erect as well 

 as horizontal or declined has led early authors to determine it also as 

 Trillium erectum or Trillium cernuum. The early records are so confused 

 that they should be disregarded. Friesner (Butler Univ. Bot. Stud. 1: 34- 

 36. 1929), after an exhaustive study of this species and its forms, con- 

 cluded that there were not two forms (Trillium erectum and Trillium 

 Gleasoni) in this state, and that our plant is one highly variable species. 

 It is now evident that the true Trillium erectum occurs east and south of 

 Indiana. Trillium cernuum, likewise, is out of our area. Its range is chiefly 

 along the Coastal Plain and it is represented here only by its var. 

 macranthum. 



Southern Mich, to s. Minn., southw. to Ohio and Mo. 



6a. Trillium Gleasoni Fernald forma Walpolei (Farw.) Deam, comb, 

 nov. (Trillium cernuum var. declinatum Gray f. Walpolei Farw. Rept. 

 Mich. Acad. Science 21 : 363. 1920.) Map 664a. This is a form which is 



