276 REPORT OF NEW JERSEY STATE AIUSEUM. 



hh. Plant more robust, leaves wider. 



R. glomerata, p. 279 

 bb. Clusters in dense globular heads, spikelets brown. 



c. Clusters 15-25 mm. in diameter. R. axillaris, p. 280 



cc. Clusters 7-15 mm. in diameter. R. a. microcephala, p. 280 



aaaa. Spikelets pedicelled or clusters pedicelled in a more or less open panicle. 



b. Leaves filiform, spikelets on filiform pedicels. R. rariHora, p. 281 



bb. Leaves involute, spikes sessile. R. torreyana, p. 281 



bbb. Leaves flat, spikelets sessile. R. cymosa, p. 281 



Rynchospora macrostachya Torr. Horned Rush. 



PI. XVIIL, Fig. I. 



Rynchospora macrostacliya Torrey, Gray Ann. Lye. N. Y. IIL 206. 1835. 



[Amherst and New Bedford, Mass.]. Willis 69. 

 Cerate schoenus macrostachya Knieskern 34.-Gray Man. Ed. L 532. 1848. 

 Rynchospora laxa var. macrostachya Britten 268. 

 Rynchospora corniculata macrostachya Keller and Brown 6y.- 

 Rynchospora corniculata Keller and Brown 67. 



Locally common in swampy ground along the lower Delaware 

 River; more plentiful in the Cape May peninsula and casual in 

 the Pine Barrens, usually near the coast. 



C. corniculata, reported by Keller and Brown from Center 

 Square, proves to be this species. 



This is a giant amono^ our other Rynchosporas, and with its 

 large clusters of long spikelets recalls some of the larger species 

 of Cyperus, although it is taller even than they are. 



Fr. — Mid- August to late Septemlber. 



Middle District. — Center Square, Berlin, Pennsgrove (C), Franklinville 



(P). 



Pine Barrens. — Manchester (C), Forked River (S), Mays Landing (T), 

 Eighth St. 



Cape May. — Bennett, Cold Spring, Green Creek, Cape May. 



Rynchospora macrostachya inundata (Oakes.). Slender Horned Rush. 



Ceratoschoenus macrostachyus inundata Oakes, Harvey's Magazine VIL 1841. 

 185 [West Pond, Plymouth, Mass.]. 



Less common, but range probably the same as the last. 

 Fr. — Mid-August to late September. 



Middle District. — Swedesboro, Repaupo. 

 Pine Barrens. — Pasadena, Manchester (P). 



