sph^rococcoide^:. 141 



finest specimens that I have seen from English habitats 

 are some that were collected at Plymouth by Mr. 

 Gatcombe. On the west coast of Ireland, particularly in 

 Roundstone Bay, it grows in large quantities and in great 

 luxuriance. In this state, its broad, delicate, pink fronds, 

 and the elegant arrangement of its dotted fructification, 

 entitle it to be considered one of the most beautiful of 

 our native Sea-weeds. 



Nitophyllum Hillise. Miss HilPs Nitophyllum. 



Frond fan-shaped, thickish, very irregularly divided, some- 

 times nearly simple, sometimes cleft into a few broad seg- 

 ments, and sometimes deeply cut into ribbon-like lacinise, 

 proliferous from the margin and much waved, veined at the 

 base. Spores in large hemispherical conceptacles, which are 

 irregularly scattered over the frond ; tetraspores in minute, 

 dot-like spots, also scattered over the frond. 



This species is less common than the preceding. It 

 grows on the shady sides of deep, tidal pools, near low- 

 water mark, and is in perfection in summer and autumn. 

 Its most obvious characteristics are its thicker substance, 

 and large scattered spore-conceptacles. I am also in- 

 debted to Mr. Gatcombe for fine Plymouth specimens of 

 this species. 



Nitophyllum Bonnemaisonii. Bonnemaison's 

 Nitophyllum. 



Frond hand-shaped, dichotomously divided, two to four 

 inches in length, expanding from a short cylindrical stalk, 

 which springs from a disc-root ; veins sometimes confined 

 to the base, sometimes extending considerably up the seg- 

 ments. Spores in small, not very prominent conceptacles 



