14 



F L U S T R A. 



were digitated, and others that were very irregularly 

 divided. 



Tab. 3. - piuftra carbafea. Lawn Sea Matt. 



Fluftra foliacea dicho- Subdivided Sea Matt, like 



t&ma, cellulis u?io Jlrato lawn, with a fingle layer of 

 difpofitis. cells. 



Tab. 3. Fig. 6. 7. 



This Sea Matt has larger cells than any of this genus 

 that I have met with ; they are egg-fhaped at the top, 

 the lower part of the fides are a little contracted, they 

 then end abruptly at the bafe. The walls that furround 

 the cells feem to be formed of a very {lender tube. 



The figure here reprefented was drawn from a fmall 

 fpecimen, fent me by the ingenious Dr. David Skene 

 from Aberdeen : fince which, I have received a more 

 compleat fpecimen from my worthy friend Mr. Parfons, 

 M. B. profeffor of chemiflry, at Chrift Church College, 

 in Oxford, who collected it at Leith, near Edinburgh ; 

 this is regularly dichotomous, and is of a brownifh yellow 

 color ; the middle of the cells are almoft tranfparent. 



Tab. 4. 6. Fluftra bombycina. 



Fig. b. 



B. B 1. 'Fluftrn.fronde/cenSjfron- 



dibus obtujis dkhotomis et 



trichotomis co?ifertis ra- 



dicajitibus^ uno ta?itum 



fcrato cellulojis. 



Silken Sea Matt. 



This Sea Matt has very deli- 

 cate thin leaves, divided here 

 and there at the extremities, 

 fometimes in two, fometimes 

 in three parts, growing toge- 

 ther in tufts, fending forth 

 radical tubes, and having but 

 one layer of cells. 



Tab. 4. Fig. b. B. B 1. 



This 



