EXPLANATION OF THE FIGURES. 



PLATE XIV. 



Fig. I. Lever-apparatus dissected from flower of Salvia lanata. X 4 (a), (a), 



filaments ; (<5), pouch formed by the metamorphosed lower anther-lobes ; 



(c~), pollen-bearing anthers ; (d), upper arm of connective. If the pouch 



(&) is pushed back the anthers (c) descend as indicated by the arrows. 

 2. Flower of Salvia lanata. X 3 with half the calyx and corolla removed 



showing the lever-apparatus in position, (a), hypogynous disc which 



excretes nectar ; (i), ovary; (<?), style ; (<?), stigma. The arrow shows 



the direction in which pressure is applied by a bee. 

 3. The same with the pouch-like trap door pushed back and the anthers 



consequently brought down close to the landing stage. Letters as 



before. 

 4. Complete flower ot Salvia lanata. x 3. (a), position of the stigma in a 



young flower ; (i), its position in an older flower. 

 5. A stamen of Berberis Lycium. 



(a), from the back, the anther valves are closed. 



(b~), also from the back, the right-hand valve is opening and beginning to 



move upwards carrying the pollen with it. 

 The left-hand valve after completing the upward motion has turned 



inwards so that the mass of pollen faces the centre of the flower. 

 (c), from the front showing both the pollen-covered valves facing the centre 



of the flower. 

 6. Expanded flower ol Berberis Lycium. X 5. (a), inner large yellow 



sepals ; (i), outer petals ; (c), inner petals ; (d~), filaments ; (#), nectary. 

 7. Single petal of Berberis Lycium showing the position of the two large 



orange nectaries at the base. 

 8 Showing position of a stamen which has sprung up on being irritated, 



(a), stimatic surface ; (J), ovary. 



