i8o2 CRYPTOGAMIA. ALGAE. 1942. Fucus. 



*mucronatus. Round, much branched; branches filiform, fpinous, 

 the extreme-ones veficular: veficies innate, lanceolate, filiform, 

 ending, in a fimple tubercled point. Veley t 7./. I. 



*barbatus. Round, much branched, unarmed ; branches filiform, 

 tubercled at top: tubercles cluttered into an ovate cufpidate pod. 

 E/per /. 30. 



*Jelagnoides. Round, much branched; branches panicled, with al- 

 ternate fubulate fomewhat tetraftichous fpines tubercled at the 

 bafe; upper-ones clofely imbricate. 



*tamarifcifoUus. Round, much branched; branches filiform, fpin- 

 011*, the extreme ones veficular: vtficies roundifh, innate, ending 

 in fubulate fpines tubercled at the bafe. Ner, Brit it. 



* fibrofus. Round, unarmed, much branched: veficies roundifti, 

 moniliform, innate: leaves entire, lower ones linear-lanceolate, 

 upper-ones fetaceous. Ner. Brit. 14. 



*ligulatus. Somewhat cartilaginous, flat, veinlefs, bipinnate-ligulate; 

 ligu'es oppofite, 2-rowed, the extreme-ones linear-lanceolate 

 and fpinous- toothed. Light/, t. 29. 



®efculentus. Simple, undivided, cnfiform, on a pinnate ftalk ; divifi- 

 ons2 rowed, oblong, veinlefs. Light/. 28 



*Jerratus. Linear, foiked, ferrate-toothtd, cloven and flat at the tips; 

 barren ones obtufe, fertile ones acute. Eng. Bot. 1221. 



*veficu o/us. Linear, forked, entire, with g'obular, innate and ax- 

 illary veficies, cloven at the tips; barren-ones flat, fertile-ones tu- 

 mid. Eng. Bot. t. 1066. 



*ceranoides. Somewhat forked, linear, entire, fcatteredly pinnate ; 

 divifions many cleft, fomewhat radiate, tubercled linear-lanceo- 

 late rather tumid and pointed at their tips. 



% membranaceus. Linear, forked, membranous, dotted, diaphanous^, 

 very tender, with an undulate nerve fcatteredly proliferous. 

 Ner hrit 6. 



*alatus, Membranous, very tender, fomewhat forked, with alter- 

 nate, decurrent fegments: tubercles globular, fessile. 

 Ner Brit /. 13. 



*dentatus. Membranous, branched, almoft nervelefs, alternately 

 pinnatifid; branchlets linear, cut at top, with acute fegments : 

 ' fruit racemed. Ner. Brit. 15. 



*laceratus Membranous, very tender, flight'ly veined, with linear, 

 obtufe branches undulate and curled laciniate on their margins ; 

 tubercles immerfed Engl. Bot. 1067. 



* laciniatus. Membranous, branched, veinlefs ; branches dilated, 

 palmate, obtufe with flat margins: tubercles in the marginal 

 fringe Eng. Bot. 1068. 



tiifidus. Membranous, dilated, cloven, with divaricate obtufe feg- 

 ments: tubercles marginal, fcatttrcd. Eng. Bot. t. 773. 



