Bnteromorpha.] algje inarticulate. 315 



thickness of a bristle, latticed, green and remarkably tenacious, branches 

 scattered, long, erect, attenuated, transversely striated at the point, and 

 perfectly free and disentangled." Carm. MSS. 



6. E. clathrata, Grev. {latticed Enteromorpka); frond latticed 

 filiform irregularly branched and interwoven, the branchlets 

 divergent or recurved. Carm. — *S'. clathrata, «. Grev. Alg. Brit. 

 t. 181. — Solenia clathrata, Ag. Syst. — Ulva clathrata, Ag. 

 Syn. — Conferva clathrata, Roth. — Scytosiphon paradoxus, Fl. 

 Dan. t. 1595./. 2. — Conferva paradoxa, Dilltv. Brit. Conferv. 

 Synop. p. 70. L F. E. Bot. t. 2328. 



Sea-shores, Bangor, Brighton ; Devonshire, Mrs. Griffiths. Spread- 

 ing over the sand, Appin, Capt. Carmichael. ©. Spring — Autumn. — 

 " Fronds several inches long, about the thickness of a bristle, smooth, 

 cylindrical, very much branched and interwoven into a thin inextricable 

 fleece, sometimes of great extent, branches exceedingly unequal, patent 

 or recurved. Substance membranous, latticed, of a green colour. 

 Agardh has made E. erecta a variety of this species. This is an easy 

 way of getting over the ground, to be sure, to huddle plants together as 

 mere varieties of each other; but the characteristics which distinguish 

 these Alga?, are too decided to admit of their approximation ; the one being 

 erect, with long, equal, loose and disentangled branches, the other pros- 

 trate, with branches of all lengths interwoven into a matted web. If 

 this difference of habit do not constitute a difference of species, where 

 are we to look for such ?" Carm* MSS. 



7. E. ramidosa, (branchleited Enteromorpka) ; frond latticed 

 compressed twisted divaricatedly, very much branched and in- 

 terwoven, every where covered with spinulose branchlets. 

 Carm. — Ulva ramulosa, E. Bot. p. 2137. — Solenia irhi/iata, 

 Car), i. MSS. — Enteromorpha clathrata, y. uncinata, Grev. Alg. 

 Brit. t.\S\. 



In the sea. Bantry Bay, Miss IhUchins. Plymouth, Mr. Sconce. 

 Spreading over sand, Appin, rare. Capt. Carmichael. ©. Spring. — 

 " Fronds 5—G inches to 1 and 2 feet long, $ a line in diameter, com- 

 pressed, curled and twisted, much and repeatedly branched and inter- 

 woven into a (more or less) thick and inextricable mat, and beset on 

 all sides with short Bpine-like branchlets, or rather apiculi, which render 

 it harsh to the touch, Substance membranous, green. This species 

 can be distinguished at once Brora E. clathrata, with which alone there 

 is any risk of its being confounded, by mere handling, the one feeling 

 harsh and rough to the touch, the other soft and silky." Carm. MSS. 

 — Notwithstanding the great Btress my late valued friend, Capt Car- 

 michael, lias laid upon the distinguishing characters of this and the two 

 preceding species, other able Botanists think differently of their im- 

 portance] and 1 must confess, that there are intermediate 

 these plants, which would rather lead me to coincide with Dr. GreviHe 

 and to unite them. In the ramification tiny are extremely variable, in 

 the clathrate or latticed structure of the frond [by which they are dis- 

 tinguished from all others <>f the geQUS) very uniform and Constant 



s. I-;..- percurta, (Cbf^ferm-Jft Bnteromorpha); frond very 

 ilender capillary oompreeaed marked with gporioua ret i calaUous 

 and a central longitudinal line. Carm. M s s '• Soi < m)i 



