Ser. RuoposPERME&. Fam. Cryptonemiacee. 
Prats CCXC. 
GYMNOGONGRUS FASTIGIATUS, Harv. 
Gen. Cuar. Frond coriaceous, somewhat fleshy, nearly filiform or flat, 
dichotomous, fastigiate, formed of two strata of cells; the medullary 
stratum of roundish-angular cells, the coréicat of moniliform, vertical 
filaments, set in gelatine. Lructification: 1, immersed conceptacles, 
more or less prominent, composed of several nucleoli of spores aggre- 
gated in a compound nucleus; 2, external nemathecia (or warts), 
formed of radiating filaments, whose cells at maturity are changed 
into cruciate tetraspores.—Gymnoconerus (JJart.), from yupvos, 
naked, and yoyypos, « wart-like eacrescence on trees. 
Frons carnoso-coriacea, teretiuscula aut plana, dichotomo-fastigiata, stratis duo- 
bus cellularum constituta; strato medullari cellulis rotundato-angulatis, cor- 
ticali filis monilifor mibus verticalibus muco cohibitis contexto. Fruct. : il; 
c vystocar ‘pia tmmersa, plus minus prominentia, clausa, nucleolis sporarum plu- 
ribus in nucleum compositum aggregatis constantia; 2, nemathecia externa, 
jilis radiantibus demum in tetrasporas cruciatas solutis constituta. 
Gymnoconervs fastigiatus ; frond dwarf, filiform or a little compressed, 
dichotomously much branched, fastigiate, flabelliform; branches and 
ramuli close, tapering to the apex, subacute; axils obtuse ; cystocarps 
below the tips of the ramuli, forming round swellings prominent to 
every side. 
G. fastigiatus ; fronde pusilla Jiliforme v. parum compressa dichotome ramosis- 
sima fastigiata fabelliformi, ramis ramulisque densis apice attenuatis subacu- 
tis, axillis obtusis, cystocarpiis infra apices ranulorum nodoso-incrassatos 
immersis circumcirca prom inentibus. 
GymNnoconerws fastigiatus, Harv. in Hook. Fl. Tasm. v. 2. p. 322. 
Has. On granite rocks, at half-tide, Forester’s River, Tasmania, R, Gunn. 
Groer. Distr. Tasmania. 
Descr. oot a small dise. Fronds densely tufted, 1-14 inches high, scarcely 
as thick as bristle, many times dichotomous, the segments spreading like a 
fan, and fastigiate, erecto-patent, acute. The axils throughout the frond 
are blunt, though narrow. Cystocarps are abundantly produced on our spe- 
cimens ; they occur either solitary or in pairs in the uppermost ramuli, 
forming knot-like swellings in the ramulus about thrice the diameter of the 
part where they occur. The nucleus is very dense, consisting of minute 
spores. The colour is a dark and dull reddish-brown, becoming browner 
in drying and horny on exposure to weather. Sudstance very rigid, horny 
when dry. The frond does not in the least adhere to paper in drying. 
PLL PPL PRA POPP PLP Pe 
