SUPPLEMENT. 
127 
small, pyriform spores. Specimens in fruit communicated by Mr. S. Aslxmead from 
Key West. (v. s.) 
Page 61, 
3. Dasya ramosissima , Harv. 
Add to description : Conceptacles sessile on the lesser branches, ovato-globose, thin 
walled, inflated, without prominent orifice, containing a large nucleus. Stichidia on 
the rainelli, either fusiform or ovato-acuminate, always tapering to a slender point ; 
tetraspores in a single or double row. Specimens in both kinds of fruit communicated 
by Mr. S. Ashmead from Key West. (v. s.) 
Page 62, add, 
3.* Dasya Harveyi , Ashmead ; rose red ; stem cartilagineo-membranaceous, longi- 
tudinally striate, glabrous, inarticulate, robust, attenuated upwards, much branched ; 
branches alternate or secund, once or twice decompound, their ultimate divisions being 
pinnated with capillary, closely set, articulated (polysiphonous) ramuli, which are 
densely clothed with byssoid, dichotomous ramelli ; cells of the epidermis of the branches 
very narrow, parallel ; articulations of the ramelli many times longer than broad , 
conceptacles sessile near the tips of the lesser ramuli, urceolate, with a prominent orifice ; 
stichidia on the ramelli, tapering to each end. (Tab. L. A.) 
Hab. Key West, Mr. Ashmead. (v. s. in Herb. T.C.D.) 
Frond 8 — 10 inches long, as thick as crow-quill in the main divisions ; very much 
branched, the successive divisions being more and more slender, till the ultimate ones 
have become finer than human hair. The branching is irregular, the larger divisions 
frequently secund, several lateral branches directed successively first to one side and 
then to the opposite one of the main branch. All the main branches and their lesser 
divisions down to the last are inarticulate, being coated with very slender, coloured, 
longitudinal, parallel, seriated cells, which give the branches a striated appearance under 
the microscope ; they are also glabrous, or bare of ramelli. The ultimate branchlets, 
which are half an inch to an inch long, are plumose, very flaccid and soft, and closely 
set with lateral, but not strictly distichous pinnules, which are clothed with excessively 
slender, cobweb-like, flaccid ramelli. These latter are many times dichotomous and 
taper to the points ; their articulations are many times longer than broad. The concep- 
tacles are nearly of the form of those of Polysiphonia urceolata , and are sessile at or 
near the ends of the pinnules of the plumose branchlets. The stichidia spring from the 
lower forkings of the byssoid ramelli, and are much attenuated, tapering at each end ; 
and containing a double row of tetraspores. The whole plant is of a beautiful, clear, 
rose-red colour. Its substance is very soft and flaccid, and in drying it adheres very 
strongly to paper. 
