ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 461 
water. It seems that about the period of maturing the oe 
at the end of August, the long horizontal rhizoma, which at 
its end is to bear the flowering stem of next season, ates to 
hai 
species, at this time, end of August, few in number, and only 
a few inches long. Towards the close of the season they in- 
streams, the sluices of which they are apt to obstruct. These 
leaves decay about the period the ag begins to bloom. The 
beautiful specimens collected by Dr. Robbins for the Herba- 
ering specimens is caused by the strong — in which 
they grew. The only thing approaching submerged 
leaves, Mr. Parker has found in the Delaware fe Philadel- 
t 
is too often a vain desideratum in herbarium specimens. 
SUPINIFORMIS, n. sp.: foliis vernalibus e basi latiore 
subulatis capillaceis longissimis teretibus pallide virentibus 
natantibus evanescentibus ; ; caule florifero erecto humili 
(digitali vel ultra) folia erecta teretia longiora gerente ; 
anicula simplici; capitulis sub-5-floris ; sepalis ovato-lan- 
ceolatis cuspidatis nervosis squalibus seu externis paulo bre- 
vioribus inter se inzequalibus stamina 3 stigmataque paulo 
cxesiienenale antheris oblongis filamento multo brevioribus; 
stylo per-brevi; capsula prismatica obtusa mucronata unilo- 
culari calycem fere excedente; seminibus obovatis utrumque 
apiculatis. 
Common in and around ponds near Mendocino nia oa 
fornia; May and June, #. olander, C Cal. State Surv 
Mr, Bolander informs me that in spring these ponds com- 
