ENGELM ANN — NORTH AM. SPECIES OF JUNCUS. 449 



spatha paniculam parvam contractam cequante seu raro su- 

 perante ; sepalis sequilongis lanceolatis, exterioribus apice 

 subulatis, interioribus latioribus mucronatis stamina 6 plus 

 quam duplo superantibus ; antheris filamenta aequantibus; 

 stigmatibus ovarium ovaturn cum stylo brcvi vix aequantibus 

 inclusis; capsula straminea ovata sursum tricocca retusa tri- 

 loculari sepala aequante seu paulo superante; appcndicibus 

 semini ipso lineari costato-lineolato paulo brevioribus. 



On the banks of Fox river, near Ringwood, in Northern 

 Illinois, " a few years ago, in an open wood, now plowed 

 over," Dr. George Vaseij, who paid a good deal of attention 

 to this genus and to the botany of his neighborhood generally, 

 and for whom this species is named ; on the Saskatchewan, 

 JSourgeau; in the Rocky Mountains, Drummond; and, mixed 

 with J tenuis, in Colorado, E. Hall. — The wiry stems, 1 or 

 \\ to 2 or *l\ feet high, are covered at base with brown 

 sheaths, the innermost of which bear very slender terete 

 leaves, shorter than the stem, and channelled only near the 

 base, so that our plant is thus most closely allied to those of 

 the first section; its inflorescence, however, is decidedly term- 

 inal, and connects it with J. tenuis and its relatives. The 

 compact panicle is $-1 inch long, green, or, when fully ripe, 

 of a light brownish straw color ; flowers 2 lines long ; seeds 

 very slender, body about 0.3, and with the appendages, 0.5- 

 0.7 line long. This species is the western representative of 

 J. Greenii, from which it is distinguished by the longer stems, 

 the terete, scarcely channelled leaves, the lighter colored 

 flowers, the shorter capsule, and by the slender seeds with 

 longer appendages. 



22. J. Greenii, Oakes& Tuckerm. Sillim. Journ. 45 (1843), 

 p. 37; Steud. Glum. 2, 305; Gray Man. ed. 2, 483; caespitosusj 

 caulibus (pedalibus sesquipedalibus) rigidis strictis striatis basi 

 parce stramineo-vaginatis ; foliis caule brevioribus teretiuscu- 

 lis totis profuude sulcatis ; spatha paniculam contractam ad 

 ramos ultimos secundifloram plerumque longe superante ; 

 sepalis (stramineo-fuscis) lanceolatis subulatis subaequalibus 

 seu interioribus paulo brevioribus cuspidatis stamina (3 duplo 

 superantibus ; antheris filamenta aequantibus ; capsula ovato- 

 oblonga retusa sepala excedente (pallide fusca) triloculari; 

 semini bus obovatis costato-lineolatis breviter caudatis. 



On the coast of Massachusetts and Rhode Island (to Long 

 Island?) and on the Saco river at the foot of the White 

 Mountains. — Few and pale sheaths at the base of the stem ; 

 leaves deeply channelled all their length ; panicle contracted, 

 with erect, one-sided branches, 1-14 inches long; flowers 

 1.7-1.8 lines in length ; seeds 0.25-0.30 line, and with the 

 appendages, 0.37-0.40 line long, appendages about half as 

 lomr as the diameter of the seed. 



