Delesseria .] 
IX. alg^e. 
683 
alternate, at length lacerate between the nerves, the ultimate segments erecto- 
patent, costate. — FI. Antarct. 470. t. 175 ; Harv. Ner. Austr. 115; J. Ag. 
Sp. Alg. ii. 689. 
Ruapuke, Preservation Harbour, and Chalky Bay, Lyall. (Fuegia.) 
§ 3. Frond proliferous, the branches rising from the midrib. 
7. D. nereifolia, Harv. in FI. N. Z. ii. 238. Frond red-purple, stiff 
and elastic when fresh, when old with a stout stipes, 6-8 in. long, 1 in. 
broad, linear-oblong, obtuse, costate, pinnately veined ; branches or leaflets 
springing from the often denuded stout costa, oblong, quite entire, flat, ob- 
tuse, with broad prominent midribs, and feathered with opposite close-set 
nerves, between which the membrane is reticulated with articulate lines of 
cells. Fruit unknown. 
Preservation Harbour and Stewart’s Island, Lyall. 
8. D. oppositifolia, Harv. in FI. JV. Z. ii. 239. Frond lake-red, 
1-2 in. high, linear-lanceolate, costate, at length 2-3-pinnately compound, 
with opposite leaflets springing from the costa ; larger leaflets with a cylindric 
costa coated with small cells ; smaller leaflets with an articulate costa. 
Stewart’s Island, rare, Lyall. 
9. D. crassinervia, Mont. ; — FI. N. Z. ii. 239. Frond bright red, 
linear, 1-2 ft. long, more or less closely pinnated throughout with branches 
6-8 in. long ; branches emitting leaflets from the midrib, which again are 
proliferously divided ; costa very thick ; leaflets ovate-lanceolate, acuminate 
at both ends. Sori elongate, solitary on each side of the midrib. — Mont, in 
Yoy. au Pole Sud, 164. t. 8. f. 1 (small state) ; FI. Antarct. 184 ; Harv. Ner. 
Austr. 115 ; J. Ag. Sp. Alg. ii. 694. 
Ruapuke Harbour and Stewart’s Island, Lyall. Lord Auckland’s group and 
Campbell’s Island, J. 1). H. (Fuegia, Kerguelen’s Land.) — Perhaps only a large 
southern state of the European D. Hypoglossum. 
10. D. ruscifolia, Lamour. ; — FI. N. Z. ii. 239. Frond crimson, 1-3 
in. high, with a branched winged stem, linear-oblong, branched throughout 
proliferously from the costa ; leaflets stipitate, young obovate, old linear, ob- 
tuse ; costa pinnately veined ; nerves pellucid when dry. Sori linear, 2 pairs 
on each side of the costa. — Harv. Ner. Austr. 115 ; Phyc. Brit. t. 26 ; J. Ag. 
Sp. Alg. ii. 695. 
Cook’s Straits, Lyall. (Australia, Fuegia, S. Africa, N. Atlantic.) 
54. HEMINEURA, Harv. 
Frond rose-red, leaf-like, delicately membranous, flaccid, 1-3-pinnatifid, 
entire or serrulate; midrib very slender. Conceptacles horned, pierced by a 
pore on the costa. Tetraspores intramarginal. 
Genus of two species, one Tasmanian and the following. 
1. H. cruenta, Harv. in FI. JH. Z. ii. 240. Fronds 4-5 in. long, J- 1 
in. broad ; segments narrow, ultimate y 1 ^ in. broad, acute, quite entire, but 
2 y 2 
