2779
N I T O P H Y L L U M Gmelini.
Marginal-fruited Nitophyllum.
CRYPTOGAMIA Algce.
Gen. Char. Frond plane, delicately membranaceous,
rose-coloured, reticulated, wholly without veins,
or with very slight vague ones towards the base.
Fructification, hemispherical capsules imbedded
in the substance of the frond, and ternate g ra nules
forming distinct scattered spots.— Grev.
Spec. Char. Stem short, passing into a frond with a
roundish outline deeply c le ft; the main segments
broadly wedge-shaped, vaguely subdivided, faintly
marked with vague flexuose veins ; the margin
entire. Spots of ternate granules irregularly marginal.—
Grev.
S yn. Nitophyllum Gmelini. Grev. Alg. Brit. 82.
Hook, in Sm. Engl. FI. v. 5. 288.
Delesseria Gmelini. Lamour. Ess. 36.
Fucus laceratus y. Turn. Hist. Fuc. v. 1. 153.
“ JRjOOT a small disk. Stem two lines to half an inch in
height, simple, or divided into two to four branches, each
expanding into a roundish semicircular or broadly wedge-
shaped frond, one to four inches in height, cleft more than
half-way down into two to five wedge-shaped segments,
which are again divided, but not so deeply, very unequally
and irregularly, the summits always obtuse. The margins
are entire, and mostly quite even : the reticulated substance
is traversed from the base to the extremity with obscure
often pale veins, always perceptible when fresh, but some