148 SCULPTURE OF THE TESTA OF GERMAN JUNCACES. 
viter apiculata ; dorso regulariter reticulata, lateribus tenuissime trans- 
verse reticulatis, areis lzevibus ; ferruginea ; long. 0:23; lat. 0:13-0:14. 
8. J. paniculatus, Hoppe.* Semina... apiculata ; areis transversis 
reticulata ; ferruginea ; long. 0:24 ; lat. ca. 0°15. 
9. J. Balticus, Willd. Semina ovalia vel obovata, brevissime apicu- 
lata; reticulata, areis paulo transversis ; griseo-fusca ; long. 0:28- 
0:35 ; lat. 0:16-0-2. 
10. J. Arcticus, Willd. Semina oblique obovata, apiculata; reti- 
culata, areis levibus ;} pallide ferruginea; long. 073-0732; lat. 0°15- 
0:18. 
11. J. filiformis, L. Semina oblique obovata, brevissime apiculata ; 
reticulata, areis lævibus;t vitellina, apice ferruginea ; long. 0:2-0:21; 
lat. 0:12-0:13. 
12. J. stygius, L. Semina ovato-lanceolata, longe apiculata ; COS- 
tata, costis numerosissimis areas tenues acutas formantibus ; straminea; 
long. 0:7—1:0 ; nucleus 0°4—0°6 ; lat. 0°3. 
13. J. castaneus, Smith. Semina scobiformia (longissime caudata), 
caudis obliquis; costata, costis numerosissimis, areas tenues acutas 
formantibus; ferruginea, caudis albis; long. 1:25-1:4, nucleus 035- 
0:42; lat. 018—072. 
14. J. triglumis, L. Semina scobiformia, nucleo elongato-ovali ; 
costata ; costis numerosis, transtillis perpaucis inconspicuis ; pallide 
ferruginea, caudis albis; long. 08-1, nucleus 0°3 ; lat. 013-018. _ 
14a. J. biglumis, L.$ Semina scobiformia, nucleo ovato; costata, 
transtillis numerosis inconspicuis (areis fere quadratis) ; pallide ferru- 
ginea, caudis albis; long. 0°55-0°6, nucleus 0:3-0'35 ; lat. 0:2 
* My specimens of J. paniculatus, Hoppe, having only unripe seeds, which 
are quite compressed, the description given above is unsatisfactory. € 
plant differs, however, from the other species by its stouter, branched, mes 
paler inflorescence, whilst the dark-brown sheaths and stems corres nd wit 
PpO of J. glaucus. It hardly deserves to be separated specifically from 
. glaucus. : é 
_+ Ina dry state both plants exhibit a regular reticulation, in which mane 
ribs nor transverse lines are prominent, but the reticulation is often obseu 
by strong wrinkles of the thick, outer membrane. I do therefore not approve 
of Dr. Engelmann referring J. Arcticus to the group with ribbed 
filiformis to that with reticulate. Respecting the appearance of the es 
Mer soaking, and the structure of the inner and outer membrane of testa 
ow. * 
t J. biglumis, Linn., I have enumerated on account of its close ere 
with J. triglumis, although this species is peculiar to the extreme north, and 
does not occur in the Alps. 
