300 



JUNCACEAE 



Luzula 



1901) is characteristic of this variety, although transitional forms between 

 the preceding variety and var. fuscescens are occasional. Its habitats are 

 the same as those of var. rariflorus. 

 Vt. to B. C. and Mo. 



937. LtJZULA DC. Wood Rush 

 [Fernald and Wiegand. The variations of Luzula campestris in North 

 America. Rhodora 15: 38-43. 1913.] 



Flowers solitary at the tips of the branches of the inflorescence 



1. L. carolinae var. saltuensis. 



Flowers crowded in spikelike clusters or glomerules. 



Rays of umbel erect or ascending, relatively stout; heads mostly cylindric. 



Cauline leaves large, (7) 9-14 cm long, 4-6 (9) mm wide; filaments equaling the 

 anthers; perianth averaging 3 mm long, usually slightly exceeding the capsule; 



heads pale; base of plant rarely producing bulbs 2. L. midtiflora. 



Cauline leaves small, 3-5.5 cm long, 2-3 mm wide; filaments shorter than the 

 anthers; perianth averaging 2.5 mm long, shorter than the capsule; heads 

 dark; base of plant commonly producing bulbs. .2a. L. midtiflora var. bulbosa. 

 Rays of umbel mostly strongly divergent, some elongate and filiform; heads hemi- 

 spheric or short-cylindric; leaves mostly clustered at the base of the plant, the 

 cauline small, 2-7 cm long, 1.5-3 mm wide. 

 Filaments half the length of the anthers or less; perianth conspicuously exceeding 



the capsule, generally 3 mm or more long 3. L. echinata. 



Filaments more than half the length of the anthers; perianth from shorter than 



to slightly exceeding the capsule, generally about 2.5 mm long • 



3a. L. echinata var. mesochorea. 



1. Luzula carolinae S. Wats. var. saltuensis (Fern.) Fern. (Rhodora 

 40: 404. 1938.) (Luzula saltuensis Fern., Juncoides carolinae of Britton 

 and Brown, Illus. Flora, ed. 2, and Juncoides pilosum of American authors.) 

 Map 622.* A northern plant known in Indiana from only two collections: 

 base of a low wooded slope near pond in woods on the Douglas farm 21/2 

 miles southeast of Hamilton, De Kalb County, Deam no. 44268, May 25, 

 1927, and about 4 miles north of Notre Dame, St. Joseph County, J. A. 

 Nieuwland no. 9115, in 1909. 



* The name of this plant was changed after the map was made. 



