ACOTYLEDONS. ALGJE. Ulva. 91 



juice, in the saine wav as U. umhUicalis. It is esteemed g-ood, as 

 , indeed almost all esculent vegetables are, for scvophulous habits, 

 Lightfoot says that the islanders ascribe to it an anodyne virtue, 

 and bind it about the front and temples to assuage head-ache in 

 fevers and to procure sleep. 



2. U. hidloso, frond dilated tubular tben spreading plane green 

 variously sinuated and folded subgelatinous lubricous. A^.pA\. 

 E. B. t. 2320. Ulva Lacluca f3., Ligktf. p. 971. 



Hab. Fresh v^-ater ditches and pools, Lighff. 



Smaller, subgelatinous, lubricous, firmly adhering to paper, and ex- 

 cessively tender, otherwise much resembling L^ Lactucct. May not 

 the dliierences arise from the different places of growth ? 



3. U. umhiikaUs, fronds broadly oblong membranaceous i)ur- 

 plish spreading nearly plane waved and crisped. Ligktf. 

 p. 967. E. B. t. 2288. Ulva laciniala P Ughlf. p. 974. 



Ulva purpurea, Ag. p. 42. 



Hab. Rocks on the shore, frequent, Lighff. Mouth of the Clyde, not 

 common, Hopk. 



This, under the name oi Laver, is much eaten in many parts of Eng- 

 land, pickled with salt and preserved in jars, and when brought^ to 

 table served up with lemon juice. According to Lightfoot, the in- 

 habitants of the vv-estern isles gather it in the month of March, and, 

 after pounding and stewing it with a little water, eat it with pep- 

 per, vinegar, and butter. Others stew it with leeks and onions. 



4. U. Linzo, frond linear-lanceolate green with the margin 

 waved and crisped. Jg. p. 44. Light/, p. 96S. Dill. Muse. 

 t.9.f.Q. 



Hab. Ditches, especially of salt and brackish v/ater. 

 Six inches to a foot long. 



5. U. crispa, fronds bullate plicate and crisped wrinkled grooi 

 collected into a broad mass or stratum. Ligktf. p, 972. 

 Ag. p. 43. Dill. Muse. t. 10. /. 12. 



Hab. Upon the ground in shady places, belov^^ walls and houses and 

 upon thatched roots, not uncommon. 



6. U. monlana, " frond coriaceous dark red of numerous ascend- 

 ing rounded flattish finely granulated lobes." Sm. Ligktf. 

 p. 973. E.B.t.2\93.' 



Hab. Among grass and moss upon the mountains, in the Isle of Skye 

 and on the western coast, Lighff. 



This is called mouufain dulse by the Scotch; and the Highlanders, 

 according to Lightfoot, wash it, and rub it between their hands in 

 water, so as to make a paste, v,^ith which they purge their calves. 

 *■* Fronds tubular. 



7. U. hiteallnalis, frond linear-oblong very much sinuated and 

 wrinkled tubular green simple. Ligktf. p. 9(3S. yJg. p. 45. 

 Dill. Muse. t. 9. fl. 



Hab. Ditches, especially of salt or brackish water. 



8. U. cvrnpressa, frond tubular linear or filiform simjdc or 



