54 



MR. C. BAILEY ON THE STRUCTURE ETC. 



having two narrow parallel ridges passing over the summit, 

 and descending about halfway down the covering of the 

 flower (fig. 78). For comparison, see an antheriferous 

 flower of N. minor in Plate VI. fig. 17 j a transverse sec- 

 tion of N. major in fig. 1 8 ; a vertical section of N. major 

 in fig. 23 ; a vertical section of N. minor in fig. 27 ; and a 

 vertical section of iV. major in fig. 21. 



Fig. 77, 



Fig. 78. 



The membrane which invests the anther is formed of 

 close-ranked, elongate, translucent cells, six to twelve 

 times as long as broad, and tinged with a beautiful rose- 

 colour ; the superposition of this rosy membrane over the 

 lemon-coloured pollen of the anther gives the flower a 

 tawny-orange appearance, which readily attracts notice, 

 even without the aid of a lens. The cells which compose 

 the ridges in the upper half of the flower are larger and 

 broader than those of the rest of the membrane. 



Robert Brown^s N. tenuifolia has considerable affinity 

 with the Manchester plant, but, independent of other 

 differences, the anther is very dissimilar on account of its 

 external tunic terminating in a narrow elongate beak, 

 which bears a number of brown spiny teeth at its free end 

 (see fig. 15, Plate VI.). At the period of dehiscence the 



