Miscellanea. 
423 
alternis, crassis, simplicibus furcatis v. alterne multifidis, acu- 
tis, basi constrictis : articulis diametro 2-3-plo longioribus; 
stichidiis minimis, lanceolatis, ad apices ramellorum insiden- 
tibus. 
George Town, V. D. L., R. Gunn , Esq., n. 1303 in part .— 
Fronds 4 inches, or probably much more in length, § of a line in 
diameter at the base, gradually smaller upwards, irregularly di¬ 
vided many times in a pinnate manner, the divisions patent with 
rounded axils. Branches rather flexuous, opake, and not dis¬ 
tinctly jointed, but divided at intervals of 4-5 diameters into por¬ 
tions resembling joints narrowed at the base and swelling up¬ 
wards, almost pyriform; from the swollen part of which spring 
lesser branches or pinnules, also inarticulate, but furnished with 
jointed single tubed ramili, which are not of much less diameter 
than the pinnules. These ultimate ramuli are contracted at the 
basal joint, and gradually taper to an acute apex; they are simple 
at the lower part of the pinnule, erecto-patent and rather distant; 
those in the upper part of the pinnule are alternately divided or 
pinnulated:—the joints in all about 2-3 times longer than broad. 
The Stichidia are exceedingly minute, especially so in reference 
to the large size of the plant, and are borne on long pedicels or 
accessory ramuli which spring from the more divided of the jointed 
ramuli. Each stichidium is of less diameter than the ramulus 
from which its pedicel springs, and might easily fit into one of 
its joints.—Of this plant I have seen but a single imperfect spe¬ 
cimen, but its characters are so distinct that there can be no 
doubt of its claim to specific distinction. It is not closely related 
to any Australian species yet noticed, but is allied in many cha¬ 
racters to the European D. coccinea , from which the smooth stem, 
the long joints, and the fruit will readily distinguish it. The 
colour is a pinky red, given out in fresh water. 
9. Polysiphonia byssoclados , Harv.; caule ultra-setaceo, elongato 
sub-dichotomo, articulato, basi nudo; ramis decomposito- 
ramosissimis, sensim attenuatis ; ultimis elongatis, simplicibus; 
totis ramellis monosiphoniis dichotomis articulatis roseis den- 
sissime vestitis; articulis caulinis diametro triplo longioribus, 
rameis diametro equalibus v. brevioribus; keramidiis ovatis, 
