422 DR LAUDER LINDSAY ON THE 



30. S.filix, Hffm., Nyl., Lich. N.Z., 246 (fig. 37). (Lindsay, Sperinog., p. 194, Plate X. 

 fig. 28. Stictina Jilicina, Ach., Nyl., Synopsis, 349.) 



On trees, East Taeri Bush ; Signal Hill, Dunedin {ex Herb. Dr Sinclair). 



One of the most beautiful of the New Zealand Stictce. Some specimens show 

 the tendency to multifid division of the edges of the latinise, so common among 

 these Stictce. Similar minute squamules or granules occur occasionally also on 

 the margins of old apothecia, as well as on the surface of the thallus. These old 

 apothecia frequently lose their disk, and assume the colour of the thallus, or a 

 paler or whitish tint. The colour of the upper surface of the thallus in the Her- 

 barium varies from buff to bright reddish-brown. The prominent ribs of the 

 lower surface, which, in the Herbarium, have generally a dark-brown colour, give 

 the plant somewhat the aspect of certain marine Algce {e.g., species of Fums). 

 These costse have, moreover, frequently corresponding sulci on the upper surface 

 of the thallus. The stout, rigid stem in the larger forms, frequently becomes 

 sub-fistulose, from incurving of its margins. 



In Signal Hill specimens the thecce are -0030" to "0036'' long, and -0006'' broad ; 

 the spores (fig. 37 a) broadly ellipsoid, 3-septate, colourless or pale yellow; -0009" 

 long, and -0003'' broad. 



Y&r.parvula, Nyl., Lich. N.Z., 247 (fig. 37). 



Tarndale, Nelson (ex Herb. Sinclair) ; bearing both apothecia and spermo- 

 gones. 



One of the most elegant of the lesser Stictce of New Zealand. The thallus is 

 very smooth and glistening, divided into very narrow, minutely cut latinise. 

 The whole plant resembles in size and shape (it is under an inch high) some forms 

 of Cladonia cervicornis, Ach., and its allies. 



The paraphyses are sub-discrete, with coloured and irregular, tuberculiform 

 heads, closely united. The thecce are 8-spored, blue with iodine; -0036" to -0045" 

 long, and -0006" to -0009" broad. The spores (b) are narrowly ellipsoid, 3 to 5-sep- 

 tate, colourless; 0015" long, and 00025" broad. 



31. S. damcecornis, Ach., var. subcaperata, Nyl., Lich. N.Z., 247 (figs. 38-42). 



On trees, East Taeri Bush ; bearing both apothecia and spermogones. 



In colour and other characters it resembles Ricasolia herbacea. The para- 

 physes are discrete, filiform, united by yellow clavate apices, which are covered by 

 a yellow thin membrane. The hymenium gives a beautiful blue with iodine, and 

 its whole constituents are very distinct. The thecce are 8-spored, -0045" long, and 

 •0009" broad. The spores (fig. 41) are broadly fusiform, colourless, 3-septate ; *0012' 

 to -0015" long, and -00045" broad. The spermogones (fig. 38 b) are those of the type, 



