80 



also this species in certain cases keeps its spherical shape for a 

 longer time, if much attacked by animals. 



The form conglutinata is characterized by its more or less 

 remoted, short bundles composed of very short and much anasto- 

 mosed branches and wart-like processes. The crust partly some- 

 what increases in thickness, though apparently not more than up 

 to about 3 mm., or the central portions of not opened specimens 

 forms lobes, from which the named bundles issue. Pl. 14, fig. 4 

 represents a specimen forming rather coarse lobes, with a smaller 

 cavity in the part that has turned towards the bottom, looking, 

 however, as if a larger cavity has been nearly replenished. An- 

 other and cup-shaped specimen is provided with a distinct and 

 about 3 mm. thick crust, with new and crust-like formations in 

 the part turned downwards, and in the part turned upwards with 

 short branches or wart-like processes, or small bundles. Two other 

 and cup-shaped specimens apparently stand between f. abbreviata 

 and f. lobata. The part turned upwards most closely resembles 

 the latter, forming, however, more indistinct bundles, but the lower 

 part is sometimes furnished with a thin crust, sometimes rubbed, 

 or here and there with new branches in development. 



The colour is a light pink with a purplish tinge, which after- 

 wards often passes into faint brownish-yellow. 



A longitudinal section of a branch shows partly rather distinct 

 partly undistinct cup-shaped layers of tissue, with the inner cells 

 about 10 — 14 p. long and -6— 8 [i broad. 



The conceptacles of sporangia are sometimes scattered, some- 

 times rather densely crowded especially somewhat below the tip 

 of the branches. They are convex, but very little prominent, often 

 scarcely raised above the surface of the frond and rather flattened. 

 The circular roof is 350 — 400 /j. in diameter, occasionally even a 

 little more. It is intersected with 45 — 60 muciferous canals. Over 

 grown conceptacles are partly numerous partly scarce. Also in 

 this species I have seen some few filled with local formations of 

 tissue, but the roof is apparently not so easily to be dissolved as 

 for inst. in L. dehiscens, and, therefore, probably nearly all the 

 conceptacles become overgrown. The sporangia appear to be two- 



