Ser. RuoposPERMEA. Fam. Cryplonemiacee. 
Puate CCLXXXVIII. 
GIGARTINA LANCEOLATA, Za. 
Gen. Cuar. Frond carnoso-cartilaginous, flat or cylindrical, simple or 
variously branched, composed of two strata of cells; the medullary 
stratum, of cylindrical, articulated filaments, anastomosing into a 
very lax network; the cortical, of moniliform, vertical, dichotomous 
filaments set in firm gelatine. Lructification: 1, external, globose, 
finally perforate conceptacles, containing within a saccate placenta (?) 
formed of closely interwoven filaments, a compound nucleus consist- 
ing of many confluent nucleoli, or masses of roundish-angular spores ; 
2, cruciate ¢etraspores, collected into dense, subprominent sori, lodged 
beneath the superficial cells: —Greartina (Lamour.), from yuyaptoyv, 
a grape-stone, which the conceptacles resemble. 
Frons carnoso-cartilaginea, plana v. cylindracea, ramosa, ex stratis duobus 
cellularum composita; stratum medullare ex filis tenuibus cylindraceis laxe 
anastomosantibus, corticale ex filis moniliformibus verticalibus dichotomis 
formatum. Fruct.: 1, favillidia intra pericarpium eaxternum carpostomio 
pertusum excepta, filis arachnoideis intertextis obvoluta; 2, tetraspore cru- 
ciatim divise, in soros subprominentes infra stratum corticale nidulantes 
plurime collecte. 
Gieartina Janceolata ; frond rising from a short, scarcely channelled stipes, 
flat, fleshy, lanceolate or oblong-obovate, simple, or divided into se- 
veral similar fronds; margin plane, naked or more frequently pin- 
nato-ciliate; cilia subulate, horizontal; sori of tetraspores globose, 
punctiform, immersed in the smooth disc of the frond. 
G. lanceolata; fronde e stipite brevi vix canaliculato oriente plana carnosa 
lanceolata v. oblongo-obovata simplici v. in frondes plures consimiles partita, 
margine ruda v. sepius plus minus pinnato-ciliata, ciliis subulatis horizontali- 
bus ; soris tetrasporarum punctiformibus per laminam levem sparsis unmersis. 
GicartTINnA lanceolata, Harv. in Fl. Tasm. v. 2. p. 326. 
Has. Georgetown, 2. Gunn. 
Grocer. Distr. Tasmania. 
Descr. Root a small disc. Fronds one or many from the same base, shortly 
stipitate, the stipes 3-4 inch long, somewhat channelled, compressed and 
widening upwards, and gradually expanding into the cuneate base of the 
lamina; lamina lanceolate or obovate-oblong, either subacute, acute, or 
acuminate, mostly quite simple, but sometimes branching near the base, the 
branches lanceolate as the simple fronds. The surface is flat and quite 
