ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 463 
subulatis acutissimis subequalibus stamina 3 dimida seu tertia 
parte superantibus; antheris filamento plerumque brevioribus; 
stigmatibus subsessilibus ovario ovato obtuso seu rarius acu- 
tato sub-brevioribus inclusis; capsula prismatica mucronata 
seu acutata uniloculari sepala equante seu excedente; semini- 
bus minutis obovatis seu oblanceolatis utrumque acutis areis 
lineolatis reticulatis. 
Var. a. legitimus: caulibus (1-2-pedalibus) erectis gracili- 
oribus; panicula simplici composita vel decomposita patula ; 
capitulis pluri-seu multi-(5-12-30-50)floris demum e fusco 
stramineis; floribus majoribus; sepalis eequalibus seu raro 
exterioribus paulo Jongioribus capsulam prismaticam obtusi- 
usculam mucronatam fere equantibus; antheris filamento 
multo brevioribus; ovario ovato acuto.—J. acuminatus, 
Michx. 1, 192; La Harpe, 136; Elliott, 1, 409? Kunth, 3, 535, 
non Auct. Am. plur.; J. pallescens, E. Mey. Junc. 31, non 
Lamarck; J. paradoxus, E. Mey. 1. c. 30; La Harpe, 141; 
Kunth, 3, 341; non Auct. Am.; J. fraternus, Kunth, 3, 340; 
J. debilis, Gray 1. ¢. ex parte; J. Pondii, Wood Bot. (1861) 
724. 
Var. 3. debilis: caulibus (spithameis sesquipedalibus) de- 
bilibus erectis sen decumbentibus radicantibusve; capitulis 
pauci-(3-6)floris; floribus minoribus pallidis; capsula acuta 
breviter mucronata exserta.—J. debilis, Gray Man. ed. 2, 481. 
Var. y. diffusissimus: caulibus (bipedalibus ultra) erectis 
panicule ultradecomposite ramis numerosissimis filiformibus 
elongatis; capitulis pauci-(3—7)floris pallidis; sepalis angusti- 
oribus stamina fere duplo superantibus; ovario acutato; cap- 
sula lineari-lanceolata acuta calyci fere duplo longiore.—J. 
diffusissimus, Buckley, Pl. Tex. 1. ¢. p. 9. 
Var. 6. robustus: caulibus elatis (2-4-pedalibus) erectis 
foliisque elongatis robustis; panicula ultradecomposita patu- 
la; capitulis pauci-(5—-8)floris stramineo-fuscis; floribus minori- 
bus; antheris filamenta equantibus; capsula ovata obtusa mu- 
cronata fusca sepala acutissima paulo excedente. 
All over the States, from Massachusetts southward to the 
Rio Grande, and westward to Missouri; var. ais the most 
common form found in the whole territory indicated ; var. 3 I 
have only seen from New Jersey, C. #. Smith; Pennsylvania, 
Schweinitz, Moser, Porter; Ohio, Lea; Kentucky, Short (the 
original of Gray’s J. debilis); Mississippi, . Hilgard, and 
South Carolina, Ravenel, but it is probably more extensively 
distributed; var. y, northwestern Texas, Lincecum, Buckley; 
var. 6, in the Mississippi Valley from Illinois, Geyer, Mead, 
Vasey, to Missouri! and to Louisiana, J. ale.—All the forms 
of this species flower early in the season, according to latitude, 
from April to June, and shed their numerous seeds from May 
to July. 
Through the kind liberality of Profs. Roeper of Rostock 
