296 



JUNCACEAE 



J uncus 



6 50 



Map 6 

 Juncus brachycephalus 



(Engelm.) Buchenau 



0^ 55 



Map 612 



Juncus diffu sissimus Buckley 



8. Juncus interior Wieg. Map 606. Frequent in moist sandy clearings, 

 prairies, fallow fields, open oak flats, and ditches. 



Ind. to Wyo. and Tex. 



9. Juncus Dudleyi Wieg. Map 607. Very common in wet fields, marshes, 

 ditches, low open woods, sandy or marly borders of lakes, and other moist 

 open habitats. 



Newf. to Sask. and Wash., southw. to Tenn., Kans., and Mex. ; adventive 

 in Scotland and Germany. 



10. Juncus marginatum Rostk. Map 608. Frequent in the western 

 portion of the lake area and also in southern Indiana where it is chiefly in 

 the unglaciated area. It is found in moist sandy clearings, in clay fields 

 or meadows, and rarely in marshes and on low prairies and borders 

 of ponds. 



Maine to Ont., southw. to Fla. and Nebr. 



11. Juncus biflorus Ell. (Rhodora 37: 156. 1935.) (Juncus aristulatus 

 of authors, not Michx. and Juncus marginatus var. biflorus (Ell.) Wood.) 

 Map 609. Common in southern Indiana in hard white clay soils of low 

 fallow fields and grassy meadows, in roadside ditches, and rare in open 

 flat woods; infrequent in the lake area in moist open sandy or gravelly 

 habitats, especially on borders of lakes. 



Mass. to Mich., southw. to Fla., Tex., and Mex. 



11a. Juncus biflorus f. adinus Fern. & Grisc. (Rhodora 37: 156. 1935.) 

 Deam no. 26197 from a swampy fallow field a mile and a half west of 

 Huron, Martin County, is typical of this form. 



12. Juncus canadensis J. Gay. (J uncus canadensis var. lotigicaudatus 

 Engelm.) Map 610. Very common in the lake area but infrequent south 

 of it. It is found in marshes, swales, bogs, sandy or marly ditches, and on 

 low borders or sandy shores of lakes. 



Newf. to Minn., southw. to Ga. and La. 



