TABLE IX. 
gramineae — continued. 
Fig. 39. Knappia. — a. Spikelet. b. Floret and glumellas. 
Fig. 40. Cynodon. — a. Portion of a spike, b. Spikelet. 
Fig. 41. Digitaria. — a. Spikelet. b. Fertile floret and glu- 
mellas. 
Fig. 42. a. Pistil of a grass with its hypogynous scales, b. 
Portion of the stem of a grass, with the ligule upon 
the leaf, and the sheath slit on one side, c — g. 
Examples of the inflorescence of grasses, c. Spike- 
like panicle, as in Anthoxanthum. d. Panicle, as in 
Briza minor, e. Spike, the spikelets distichous, as 
in Lolium. perenne. f. Spike, the spikelets imbri- 
cated on all sides, as in Triticum cristatum. g. Par- 
tial spike unilateral, or with the flowers pointing 
one way, as in Spartina stricta. 
Filices. 
POLYPODIACEAE. 
Fig. 1 . Ceterach. — a. Segment of a frond, from part of 
which the scales have been removed, b. Capsule. 
Fig. 2. Polypodium. — a. Segment of a frond, b. Portion of 
the same. 
Fig. 3. Woodsia. — a. Pinna, b. Involucre, most of the cap- 
sules removed. 
Fig. 4. Aspidium. — a. Pinna of first division ; b. sorus and 
involucre, c. Pinnule of second division ; d. sorus 
and involucre. 
