the BntiJJ} Fuel, with parlicuhir "Defcnptions of<ach Species. 131 



mote from each other at the bafe of the branches, but cliiftercd 

 together at the fummit. Thefe ckiftered leaves produce a fmall 

 veficle or tubercle on the outfide of their bafe, not much larger 

 than the leaf itfelf :— this proportion of the veficle to the leaf fhbuld 

 be conftantly attended to, as it is a very ftriking mark of diftinftion 

 ivom felaginoides in its moft difguifed forms. The leaves at the 

 fummit, cluftered together with the tubercles at their bafe, refemblc 

 in fome degree a bunch of grapes in miniature. The fmall branches 

 in this fpecies grow fomcwhat zigzag. 



Dr. Withering is the firft who {cY}'^r:ii\.ed felaginoides from tamarif- 

 cifolius of Hudfon. He gives us alfo Major Velley's remark upon. 

 the caerulean tints which are refledted from the branches. It 

 always appeared to us a blue faint light, fuch as is often obferv- 

 able on oyfter-fhells, when the friction of the knife has touched 

 upon a part loaded with nitrous particles. At times this light is 

 very copious, and of courfe truly chara6leriftic and ornamental : it 

 is obfervable only when under water. 



It adheres to rocks moft flrongly ; no fticus having a much 

 Aronger organ of adhefion, or a tougher fubftance. 



14. FUCUS GRANULATUS. 



F. fronde filiformi ramofiflima, deblli ; foliis fubulatis, laxiuf- 



cule imbricatis, bafi tuberculiferis ; tuberculis contiguis. 

 Sp. PI. 1629. Fl. Dan. 591. 

 Inter rejedlamenta maris apud Yarmouth. 



Radix : . From ramofiflima pedalis et ultra debills, efFufa, 



ramis altemis denuo confertiflimis, foliis fubulatis acutis brevibus, 

 bafii ad dorfum tuberculiferis — Tubercula fubrotunda, minuta con- 



S 2 tigua 



