59 ALGÆ ANTARCTICA, 
sessilibus oppositis basi sæpius ramulo brevi bracteæformi 
fulcratis. 
Has. Cape Horn and the Falkland Islands. 
A beautiful species, 4-5 inches long, having the habit of 
E. granulosus, but amply distinguished by the constantly 
opposite, sessile, conical capsules, or  utricles, very 
generally subtended by a minute ramulus half their own 
length. The main branches are frequently in fours; the 
ultimate very short ramuli, are constantly opposite, and 
issue at an angle of 75° or 80°. Besides the present species, 
the European E. tomentosus and E. siliculosus are found at 
Cape Horn. 
11. Delesseria Davisii, nobis ; caule cartilagineo alato, lami- 
na profunde pinnatifida v. pinnata, laciniis v. pinnis disti- 
chis cultrato-lanceolatis obliquis costatis penninerviis 
(nervis alternis) demum inter nervos alterne v. secunde 
lacerato-laciniatis, lacinulis erecto-patentibus costatis. 
Has. St. Martin's Cove, Cape Horn. 
Stem, or original leaf 5-6 inches long, winged or widely 
margined with a membranous frond, sending out numerous 
alternate distichous simple or forked midribbed branches. 
These are rarely found entire, being generally deeply cleft, 
especially along the outer margin, in an oblique direction from 
the margin to the midrib. Colour a fine rosy red, and sub- 
stance delicately membranous. This species presents us with 
the characters of D. alata and sanguinea strangely combined, 
differing from the most luxuriant specimens of the former 
in colour and substance; and from the latter in the alternate 
disposition of the nervures, the division of the frond, &c. 
12. Delesseria Lyalii, nobis ; folio lineari-oblongo obtuso 
costato penni-nervi nervis oppositis argute serrato, margine 
incrassato, e margine folia consimilia pedicellata pinna- 
tim emittente, serraturis subulatis simplicibus vel latere 
inferiori dentatis, coccidiis in frondis pagina sparsis, soris 
linearibus inter nervos foliorum minorum majorumque 
sitis. 
Has. Kerguelen's Land, and Falkland Islands. 
