PLATE XIII. 



Figs. 



1. Lilium tigrinum var. Fortunei (Tiger Lily). Trans- 

 * formation of a bulbil into a flower. 1 a, natural con- 

 dition ; 1 b, with the two outermost bulbil-scales 

 removed, and the others laid open, showing the 

 swollen bases of the perianth-leaves ; 1 c, andrce- 

 cium, showing a petaloid stamen (bst) with a swollen 

 base ; 1 d, diagram of the flower, bl, bulbil-scales ; 

 bp, transition between bulbil-scales and perianth- 

 leaves. (Miss M. Smith.) pp. 160-161, 163. 



2. Crocus. 2 a, foliage-leaf bearing a stigma at its apex; 



2b, scale-leaf or bract bearing a stigma at its apex. 

 (After Lutz.) p. 187. 



3. Marsilia hirsuta. Two out of the four leaflets of a 



foliage-leaf changed into " fruits." (After Busgen.) 

 p. 185. 



4, 5. Ginc/ho biloba (Maidenhair Tree). Fig. 4. — Foliage- 

 leaves (a, b, c) bearing anthers (an). (After Fujii.) 

 p. ]86. Fig. 5. — Foliage-leaf bearing an ovule (ov). 

 (After Fujii.) p. 186. 

 6. Picea nigra (Black-leaved Spruce). A bract (6) of 

 the female cone bearing ovules on the dorsal side. 

 ss, seminiferous scale. (After (Ersted.) p. 189. 



