

. 1 



/ 





r 



I 



TAB. IX. 



GRASSES 



continued. 



I 



i 



Fig. 39. 

 Fig. 40. 

 Fig. 41. 



Fig. 42. 



/ 



Knappia. — a. Spikelet. &. Floret and glumellas- 



Ctnodon. — «. Portion of a spike. J. Spikelet. 



DiGiTARiA. — a. Spikelet. 5. Fertile floret and gln- 

 mellas. 



Pistil of a grass with its hypogynous scales, b. Por- 

 tion of the stem of a grass with t h ligule upon the 

 leaf, and the sheath slit on one side. c. — g. Ex- 

 amples of the inflorescence of Grasses, c. Spiked 

 panicle as in Anthoxanthum, d. Panicle as in Briza 

 minor, e. Spike, the spikelets distichous, as in Lo- 

 Hum perenne. f. Spike, the spikelets imbricated on 

 all sides, as in Triticum c?Hstatum. g. Partial spike 

 unilateral, or with the flowers pointing one way, as 

 in Spartina stricta. 



\ 



I 



FERNS. 



] 



Fig. 1 



Fig. 2. 



Ceterach. — a. Segment of a frond with part of a 



scale removed, b. Capsule. 

 PoLYPODiuM. — a. Segment of a frond, b. Portion of 



the same, 

 WooDSiA. ~ a. Pinna, b. Involucre, most of the cap- 

 sules removed. 



Fig. 4. AsPiniUM. — a. Pinna of first division; b. Sorus and 



involucre. — c. Pinnse of second division ; d. Sorus 



and involucre. 



Fig. 3. 



J 



