+ 
Ser. CHLOROSPERMES. Tam. U/vacee. 
Puate XLII. 
ENTEROMORPHA ERECTA, Zook. 
Gen. Cuar. Frond tubular, membranaceous, of a green colour and reticu- 
lated structure. ructijication ; granules, commonly in fours, con- 
tained in the cellules of the frond. ENrrromorpHa—from évrepoy, 
an entrail, and poppy, form, or appearance. 
Entrromorena erecta; frond cylindrical, filiform, slender ; branches erect, 
opposite or alternate, all attenuated to a fine point ; ramuli capillary, 
erecto-patent ; reticulations rectangular, nearly square, arranged in 
many longitudinal lines. 
ENTEROMORPHA erecta, Hook. Br. Fl. vol. ii. p. 314. Wyatt. Alg. Danm. 
no. 166. Harv. Man. p. 175. 
EnTERoMoRPHA clathrata, 8. erecta, Grev. Alg. Brit. p.181. Harv. in Mack. 
Fil. Hib. part 3. p. 242. 
ScytosiPHon erectus, Lyngb. Hyd. Dan. p. 65. t. 15. 
FIsTULARIA erecta, Grev. Fl. Edin. p. 300. 
SoLeEnra clathrata, var. confervoidea, 4g. Syst. Alg. p. 187. 
Has. On rocks in the sea, and in rocky submarine pools, at about half- 
tide level; also dredged in 4—6 fathom water. Annual. Spring and 
Summer. Not uncommon. 
Geocr. Distr. The temperate and tropical zones of both hemispheres. 
Descr. Frond from four to eight inches in height, cylindrical, varying from the 
thickness of a hog’s bristle to half a line or a line in diameter. Stem usually 
undivided, tapering at the base and apex to a fine point, closely set through- 
out the greater part of its length with opposite or alternate, simple, erect 
or erecto-patent branches, the lowermost of which are longest, the upper 
gradually diminishing towards the upper part of the frond, all of them 
attenuated, like the stem, to an exceedingly fine point. The branches are 
well furnished with slender, subdistichous or irregularly quadrifarious, 
setaceous, short ramuli, and have a beautifully feathery appearance. The 
structure consists of a delicate membrane, composed of square or oblong- 
rectangular cells, each containing a dense endochrome, which in a state of 
fruit separates into about four distinct granules. Co/our a brilliant grass- 
green. Substance glossy, tender, and adhering to paper in drying. 
ae on 
IT have cautiously confined myself im making the above des- 
cription to the typical variety of this variable plant, a specimen 
of which, communicated by Mrs. Griffiths, is represented in our 
plate. In the “Manual” I have recorded my agreement in opi- 
nion with Dr. Greville, Sir Wm. Hooker, and, indeed, with the 
K 
