KEY TO PLATE XVI 



h- : v xv 



VHJMopfc^ rJuunnbffa 

 a, \ \ StajninatfN flo 

 Pistillate j flower.\ \ 

 with leaves 



o. ajMtanraionj^ Rusji 



(Juncus niantinius, Lain.) 



a, Tistil, with trifid stigma. 



b, Flower, i, Nut, with peri- 

 anth segments, d, Seed, witfh 



ati4 alburr^eh. 

 Base of stem, showing leaf- 

 sheaths. /; trlflorticence k 

 ffl bfact 



3. Grass 



(Zostera marina^ L.J 

 (/a, Pistil, with i\ 

 fV *, Stamen, alterne^with a. N 

 <:, Spadix, with stamens and 

 pistils alternating. </, Utricle. 

 Plan4/ showing/ leaves an4 

 the(,|with sp ^ix 

 \ I j from A tter. 



'TV 



affc&n 



1 \U J //, 

 a, Mower, with anthers and 



glume. !>, Nutlet. <r, FJcwer- 

 ing glume, enlarged- , //, 

 /// PanicwV>f flb.wers ^)th fertile 

 spikele\s\ v in 

 Vit 



No. 4 

 1 \ (Scirpustnaritimus 



a, Stamens and pistil, en- 

 larged. 6, Gluine. c, Nut, 

 with 6 bristles, d, Rootstock, 

 "th leaves and sheath. , 

 r-stalk, with flowers in 

 or cly 



g/umes, g(n4 /^teufipnjs 

 pistil, enlarged. 6, Sec- 

 of leaf, r, Stem, 



ligule, and leaf show- 

 tip inrolled margin. <y, Spike, 

 h flowers, and anthers in 



