428 TRANS. OF THE ACAD. OF SCIENCE. 
the sub-genus Juncellus, I find each circle consisting of two 
parts only, a curious and rare arrangement in a monocotyl- 
connie —_ 
of flowers we find, in some species with articulate 
hen jeafy buds or shoots as the result of retrograde meta- 
mon in J. pelocarpus, which, from this — has been 
named viviparus and abortivus ; in J. pallescens, var. fra- 
ternus, — ee got the name J. scciaiien "and i in J. 
nodosus genuinus, 
The spe persistent sepals furnish important 
e 
characteristics. e exterior and interior ones are sometimes 
similar but more freq ae dissimilar; the former usually 
carinate or naviculate, more h us, more strongly ribbed 
mistaking an Shexanite: sepal for an acute one must be reeled, 
e 
allen. The nerves of the sepals, which are of such diagnostic 
importan ce in Graminee and even Cyperacee, are of min 
va eth in ae as they vary considerably in different forms 
of the spec 
Stam 
ati —E. “Me eyer had already paid attention to the 
number of stamens and their proportion, and in many species 
valuable characters are derived from them, but they alone 
ry or capsule. We have only two species in which their 
number regularly varies between three and six, J. Buck 
and J. sages ; in them the inner circle of stamens is in- 
completely present. In many tri-androus species we find 
ran a a fourth or fifth stamen, and that often smaller 
than the rest ; but where both circles are regularly developed 
I have never seen them unequal in size or shape, which we 
notice so often in other allied families. 
° 
<4 
Es) 
