CONFERVACE.E. 279 



This plant was formerly included in the genus 

 Lyngbya. It was discovered by Miss Cutler, near the 

 mouth of the river Otter, at Budleigh Salterton, and is 

 named after her. It appears to grow on the sea-shore near 

 the influx of fresh water, and where it is covered at high 

 tide. The development of the endochrome varies, and 

 the difference between a young and a mature thread is 

 very marked. 



Hormotrichum speciosum. The beautiful Hormo- 

 trichum. 



Threads robust, soft, straight when young, becoming 

 curled at maturity, from two to four inches long, growing 

 in flowing or spreading tufts, attached to rocks and Fuci ; 

 cells not very distinctly divided, about half the length of 

 their diameter, at first nearly filled with endochrome, which 

 is condensed into an oblong sporidium, that eventually issues 

 from the cell and leaves it colourless. 



This species was also formerly a Lyngbya, and is nearly 

 allied to H. Carmichaelii. It grows between the tide- 

 marks during summer, and is annual. It is of a bright, 

 glossy, yellow-green colour, and soft texture. 



Hormotrichum Carmichaelii. Captain CarmichaePs 

 Hormotrichum. 



Threads somewhat robust, several inches long, curled, 

 tortuous, growing in densely interwoven layers of consi- 

 derable extent on rocks and other substances ; cells indis- 

 tinctly divided, about a quarter the length of their diameter, 

 at first filled with endochrome, which passes through the 

 usual stages and issues from the cell at maturity, leaving it 

 colourless. 



This species closely resembles the last, and was also 



