RHODOSPERME. 105 
beautifully reticulated, and marked at short distances by transverse striz 
or slightly curved cross-lines, thus indicating the structure of the jointed 
or chambered internal axis, which is clearly visible with the aid of a good 
_ lens. This plant does not readily adhere to paper, but if it be soaked 
in fresh water for some hours, and afterwards subjected to strong pressure, 
careful manipulation will thus be rewarded with a beautiful book specimen. 
R. thuyoides, though not rare, is by no means common, though it is found 
in rocky tidepools in some situations in large quantities. I have occasionally 
found it thus in rock-pools under Mount Edgcumbe. Like the foregoing, 
Fie. 99. Rytiphlea fruticulosa. 
it isa small species, being rarely over 4in. high. The colour is dark brown, 
sometimes even a yellowish olive, but turning nearly black in drying. 
This species is intermediate between the foregoing and R. fruticulosa. 
Fig. 99 represents a branch of this latter highly beautiful species. The 
plant from which it was taken was gathered by me off the rocks at 
extreme low water-mark in Whitsand Bay, where it grows abundantly and 
in high perfection. The colour of this plant in the growing state is 
another instance of the departure from the ordinary characteristic tint of 
the Rhodosperms, being usually a true purple, changing to a greenish tint, 
L 
