46 
VALONIACEiE. 
they are many times as long as broad ; but now and then a short, globose articulus is 
interposed between the two long ones. Colour , a pale green. 
Plate XLIII. B. Figs. 1, 2, 3. Penicillus capitatus , different varieties ; the 
natural size. Fig. 4. Portion of a dichotomous filament from the capitulum. Fig. 5. 
Small portion of the same, after the lime has been removed ; the latter figures more or 
less highly magnified. 
Sect. 2. Halipsygma, Endl. ( Rhipocephalus , Kiitz.) ; branches of the capitulum 
cohering in flabelliform laminae. 
3. Penicillus Phoenix , Lamk. ; stipes elongate, terete, incrusted, smooth ; capitu- 
lum ovoid or oblong, its filaments incrusted, very slender, dichotomous, cohering by 
their edges into many distinct, flat, cuneate, level-topped, spreading laminae. Dne. 
Cor. p. 98. Lamk. An. Mus. 20, p. 299. Corallina Phoenix , Ell. and Sol. p. 126, 
t. 25, fig. 2-3. JSfescea Phoenix, Lamour, l. c. p. 256. Bhipocephalus Phoenix , Kiitz. 
Sp. Alg. p. 50 6. (Tab. XLIII. C.) 
Hab. Key West, W. H. FI. Dredged in 3| fathoms off Soldier’s Key, Prof. 
Tuomey. (v. v.) 
Root somewhat fusiform, dense, descending. Stipes cylindrical, 1-3 inches long, a 
quarter inch in diameter, thickly incrusted with calcareous matter, the surface smooth, 
composed as in the rest of the genus of many slender longitudinal branching and 
ramelliferous threads. The filaments of the capitulum are thickly incrusted with 
calcareous matter, and disposed in many flat, cuneate, flabelliform laminae ; their 
ramifications lying close together, and cohering laterally by means of the incrustation. 
On removing the carbonate of lime the cohesion of the filaments is destroyed. The 
articulations are many times longer than broad, cylindrical, and much constricted at 
the nodes. 
Plate XLIII. C. Fig. 1 . Penicillus Phoenix , the natural size. Fig. 2. Portion 
of one of the fanlike laminae of the capitulum. Fig. 3. Cells from the same, after the 
removal of the lime ; the latter figures more or less magnified. 
III. BLODGETTIA, Harv. (n. gen.) 
Frond caespitose, branching, confervoid, articulate. Articulations unicellular, filled 
with grumous, viscid endochrome ; the cell-wall formed of separable membranes, 
