13° ■^'*' Turner's Defcr'iptions of
Fuci the capsules, when mature, burst, and immediately die away; while the feeds, from that viscidity which they are known fo eminently to possess, adhere to the surface of the frond, till, upon the whole plant at the end of autumn passing into decay, they attach themselves to the stems of the larger species, or rocks, as the force of the sea carries them, and there remain fixed till the latter months of the following spring again awake their vegetative powers.
Excepting Fucus Hypoglojfum there is none in the Britifli lift with which Fucus rufcifolius can possibly be confounded, and 1 {hall therefore trouble the Society with no more upon the subject.
Fucus crenulatus.
F. fronde plana coriace^ linear! dichotomS, ; ramorum apicibus bi- furcis oblongo-lanceolatis.
Tab. VIII.
Fig. 3. Planta naturali magnitudine. 4. Frondis apex lente au£lus.
Habitat prope Durium flumen in Lufitanise littoribus ; /3 apud Du-
brem. D. L. W. Dillwyn. Perennis ? Floret Augufto, Septembri.
Radix callus expanfus, fibrarum aliquot craffiufcularum rudimentis plerumque in{lru6lus. Frondes pliirimas, vix palmares, plans, enerves, flipiti brevi, tereti infidentes, late expanfas, undique di- chotomy, lineares, fingulari modo, prsfertim extremitates versus, obtufd, fed et minutiflime crenatas. Apices bifidi, angulis acutis, in lobos oblongo-lanceolatos defmentes. Rami plurimi, nunquam proliferi. Frudificatio tubercula hemifphserica, magnitudine fe-
minis
