324 BOTANICAL GAZETTE. | Dec., 
7. On examining a leaf of Eriophorum Virginicum we see 
that it is very thick, with many veins and lacune. The epider- 
mis is composed of small cells; the single band of bulliform cells 
over the midvein consists of about eight rows of considerable 
depth. The epidermal and bulliform cells are much like those of 
Dactylis glomerata. 
8. In Fuirena squarrosa the cells of the upper epidermis 
extend about one-third the depth of the leaf and are somewhat 
uniform in size. There is no special enlargement of these cells 
above the midvein. The epidermis is much like that of Fim- 
bristylis autumnalis and Kvyllingia pumila among sedges, and 
Andropogon prinoides among grasses, except the cells above the 
leading veins are as large as any, while in the grass they are very 
small over the veins. 
So far the examples of leaves of sedges noticed belong to one 
tribe, Scirpez. 
9. The leaves of Rhynchospora capillacea (fig. 14) are very_ 
narrow, with a few veins, small epidermal cells, and a band of 
bulliform cells reaching more than half way across and extending 
nearly one-third the depth of the leaf. This may be compared 
to a very narrow leaf or the apex of a leaf of Dactylis. 
The leaf of Cladium mariscoides is rather thick, beeom- 
ing thinner at the margins and toward the midvein. e epl- 
dermal cells are small and have thin walls; there are many layers 
of similar thin-walled parenchyma cells below the epidermis; 
but no distinct band of bulliform cells. The leaf reminds us 
very much of the leaf-blade of Scirpus validus. 
-he last two examples belong to the Rhynchosporee. : 
11. The bulliform cells of Scleria triglomerata are much like 
those of Carex vulpinoidea (fig. 15). 
The following eight examples are selected from the large and 
difficult genus Carex : ; 
12. The blade of C. vulpinoidea (fig. 15) is of medium thick- 
_hess, having about six bulliform cells extending one-third the 
way to the lower side of the broad shallow midvein. Between 
the veins there is a noticeable enlargement of about six epider- 
mal cells, the other epidermal cells being rather large. These 
side bands approach in appearance the side bands in Phleum 
pratense, only they are less distinct. 
[os podioides has a leaf much resembling the last, 
“i the epidermal cells do not show a resemblance to bulliform 
_ 14. C. Grayii is a coarse species found in low and wet places- 
_ The epidermal cells are of moderate size; the lacune are large- 
