JDNCACEAE. 95 



Leaf -blades erqc,t ; inner perianth-parts iqngep 



than the outer. 14. J. nodosiis. 

 Leaf -blades abruptly divergent from the 

 stem ; outer perianth-parts longer than the 

 ianer. 15. J. Torreyi. 



Epidermis of the leaves roughened with minute tubercles. 



' 16. J. Caesariensis. 

 Stamens 3, none opposite the inner perianth-parts. 



Capsule tapering evenly into a prominent subulate :beak. 



J7. J. sci/rpoides. 

 Capsule obtuse to acute at the apex, sometimes mucronate, but 

 not prolonged into a beak. 

 Seed 0.6-2 mm. long. 



Perianth about 2 mm. long, the fruiting head not 

 more than 4 mm. high. 18. J. brachycephalus. 



Perianth 3-4 mm. long, or if shorter, the fruiting 

 head 4 mm. high or more. 19. ./. Canadensis. 

 Seed 0.4-0,5 mm. long. 20. J. acuminafus. 



1. Juncus effusus L. M. p. 246. Marshy ground. Summer. 



2. Juncus Balticus Willd. M. p. 247. On shores. Summer. 



Lancaster— Dillerville Swamp (P.). i 



3. Juncus bufonius L. M. p. 247. Low grounds. Summer. 



4. Juncus Gerardi Lois. M. p. 248. Salt marshes. Summer. 



Delaware— Newtown, Serpentine, Dr. Geo. Smith (Fu.). 



New Jersey— Frequent. 



New Castle— Collins and Wilmington. 



5. Juncus tenuis, Willd. M. p. 248. Fields and roadsides. Summer. 



6. Juncus secundus Beauv. M. p. 248. Dry soil. Summer. 



Bucks— Sellersville (Fr.). Montgomery— Sumneytown (VPV). Lan- 

 caster— (J?.). 

 New Castle— Serpentine, Commons; Highlands, Canby. 



7. Juncus Gbeenei Oakes and- Tuokerm. M. p. 248. Near the epast. 



Summer. 

 Middlesex— Burts' Creek and Sayreville (C). 



8. Juncus dichotomus Ell. M. p. 249. Dry soil near the coast. Summer. 



Bucks— Bristol, Tullytown, Point Pleasant (Fr.). Montgomery— (P.). 

 Delaware— Tinicum, Dr. Geo. Smith (Fu.) (B. Sm.). 



Camden— Lindenwold (VP.). Gloucester— Swedesboro (Li.), Timber 

 Creek (Te.). Cape May— Holly Beach, Anglesea (He.), Cape May (Te.). 

 Monmouth— Sandy Hook (C), Seabright (Ke.). 



New Castle— Near Wilmington, Collins, Commons. 



9. Juncus setaceus Rostk. M. p. 249. Near the coast. Summer. 



Delaware— Tinicum, Dr. Geo. Smith (B. Sm.). 



10. Juncus marginatus Rostk. M. p. 249. Grassy places. Summer. 

 10a. Juncus marginatus aristulatus (Michx.) Coville. M. p. 249. MoiBt 



sandy places, mostly near the coast. Summer. 



Delaware— Upper Darby, Dr. Geo. Smith (Fu.). 



Burlington — Atsion (Fr.). Cape May— Dennisville, E. Diffenbaugh 

 (B. C), Wildwood, Holly Beach (He.), Gape May (Te.). Atlantic— 

 Atlantic City, Landisville (C). Monmouth— Seabright (CO 1 - 



New Castle— Shelpot Creek, Collins, Commons. 



