114 CRYPTOGAMIA. ALGAE. Ulva. 
U. compres'sa. Tubular, branched, compressed. 
(E. Bot. 1739. E.)—ZhVA 9. 8. and 10. 8— Pet. Ga%. 9. 6, allowed by Dill, 
to resemble it, but he asserts it to be a different plant, though it certainly 
corresponds with the plant when not branched, as Dillenius himself de¬ 
scribes it sometimes to be. 
Bather solid; unequal; winding; with cells of unequal dimensions commu¬ 
nicating one with another. Branches scattered; but little branched. 
Linn. Tubular; sometimes branched; compressed; straight; or bent; 
smooth, even. Dill. 49. 
Green Compressed Laver. Rocks; stones in the sea; and in salt water 
ditches. A. Jan.—Dec. 
U. purpuras'cens. Tubular, very much, branched; nearly round: 
branches opposite; pointed. Huds. 569 - 
(E. Bot. 641 —FI. Dan. 65 3. E.) 
Stem six inches high, of the thickness of packthread, purplish, semi-trans¬ 
parent; Branches opposite, mostly pointing two ways, round, pointed. 
Huds. n. 11. It is a beautiful transparent, tubular, and almost gelatinous 
substance, of a pale purple or pink colour; not much branched, but 
the branches very long and tapering. Mr. Stackhouse. 
(Tubular Purple Laver. E.) Near Christ-church, Hampshire. Huds. 
Not uncommon in Cornwall. Mr. Stackhouse. A. March—Oct. 
XL ru'bPvA. Thread-shaped, forked, red. Huds. 571. 
(E. Bot. 1627. E.) 
Leaf one and a half inch long, blunt. Branches long. Huds. n. 19. 
(Red Laver. Chceiophora multifida. Hook. E.) Stones in the sea, near 
Christ-church, Hampshire. A. May — Sept. 
XJ. plumo'sa. Thread-shaped, branched : branches strap-spear-shaped, 
winged, shining. Huds. 571. 
(E. Bot. 2375. E.) 
Stem a finger’s length, flatted, of a brownish reddish hue. Branches flatted, 
closely winged, reddish green; wings jelly-like, hair-like, very green. 
Huds. n. 20. 
Feathered Laver. (On marine rocks near Scarborough, but rare. Mr. 
Travis. E.) Rocks and stones in the sea, near Exmouth, Devonshire: 
also at Cromer, and Brighthelmstone. (On the beach near Whitburn. 
Mr. Winch. E.) P. April—Oct. 
XL eu^bens. Thread-shaped, very much branched, reddish: branches 
scattered, horizontal, blunt. Huds. 571. 
Lea f four inchesJong, nearly the thickness of shop packthread. Branches 
■ short. Huds. n. 18. 
(Reddish Short-branched Laver. E.) Rocks and stones in Portland 
Island, and near Pool, Dorsetshire. A. May—Oct. 
XL filifoe/mis. Thread-shaped, very much branched, purplish; 
branches scattered, distant, very long. Huds. 570. 
Leaf six inches long, nearly of the thickness of shop packthread. Branches 
blunt. Huds. n. 16, 
