Miscellanea . 
381 
expand. In the leaflet which I examined, and which I explain 
as above, the processes or leaflets near the apex, and for a long 
wav below it, were perfectly distinct from each other, merely 
being subulate teeth pectinately inserted, gradually increasing in 
length, and becoming of a lanceolate form as they were farther 
from the apex ; those next them had teeth in various stages of 
development, proceeding from their midribs on the upper surface; 
and only the lower ones were united by bars, and these only in 
their lower parts. What 1 have above called u leaf ” or the 
lanceolate lamina, becomes eventually the rachis of the compound 
leaf, and finally the stem; the leaflets become the main nerves of 
the net-work, or, in fertile plants, the stalks of the capsules. 
2. Dictyomenia tridens, Grev.; fronde lineari, membranacea, re¬ 
ticulata, bi-tripinnata, costata, costa ante apicem evanescente, 
pinnis pinnulisque crebris, apicem versus sensim minoribus, 
erecto-patentibus, margine dentibus tri-multifidis ornatis ; 
axillis dentorum rotundatis; keramidiis globosis, sessilibus; 
stichidiis_?—Fucus tridens, Turn. t. 255. 
George Town, V. J). L., R. Gunn y Esq., n. 1280.— Fronds 
6-8 inches long or more, from a line to nearly a quarter of an 
inch in breadth, flat and membranaceous, linear, tapering to the 
base and apex, furnished in the lower part with a strong midrib, 
which gradually becomes thinner and fainter as it approaches the 
upper part, and nearly or quite disappears below the apex, sim¬ 
ple or divided into 3-4 principal stems ; stems or main branches 
bi-tripinnate, with an ovate circumscription; pinnee closely set, 
erecto-patent, with rounded axils; pinnules similar; and the 
margin in every part of the frond save the denuded bases ot old 
stems, furnished with minute, tooth-like, forked, trifid, or 4-6 fid 
ramuli, about a line in length, occasionally elongating into pin¬ 
nules. Colour dark reddish brown or chesnut. Capsules or 
Keramidia nearly globose, wide mouthed, sessile on the tooth¬ 
like marginal processes. 
3. Pollexfenia pedicellata, Harv. 
Pollexfenia, Nov. Gen. 
Fronds plana, membranacea, purpureo-rosea, expansa, enervia, 
