go:mpitillus. 



[ 360 ] 



GONATOZYGOX. 



Fig. 283. 



Glyphomitrium Daviesii. 

 Teeth of the peristome. Magnified 150 diams. 



pith, also, contain curious branched liber 

 cells. 



GOMPHIL'LUS, Nyl.— A genus of 

 Lichenaoeous Lichens. 



G. calycioidc'S. On mosses, rare. (Leigh- 

 ton, Lich.-Flora, 50.) 



GOMPPIOGRAM'MA, Biauu.— A genus 

 of Diatomacese, cohort Fragilariese. 



Char. Frustules solitary or geminate, 

 front view tabellar, -with interrupted clavate 

 longitudinal vittaB, ends internally dentate ; 

 valves ovate or elliptic-lanceolate, Avith 

 transverse continuous costte. 



G. rivpestre (PI. 62. fig. 3). On moist 

 rocks (freshwater). 



BiBi.. Pabenhorst, Fl. Air/, i. IIG; and 

 p. 12 (fig.). 



GOMPHOXE'MA, Ag. — A genus of 

 Diatomacefe. 



Char. Frustules mostly single or binate, 

 attached by a filiform stipes, vvedge-shaped 

 in front view ; valves with a median fine and 

 a nodule at the centre and at each end, and 

 striated with transverse or slightly radiating 

 granular strife. Freshwater and fossil. 



Conjugation has been observed in several 

 species. 



Kiitzing describes thirty-eight species; 

 Smith admits twelve as British. The form 

 of the frustule is subject to great variety ; 

 and the specific characters are probably of 

 little value. 



The most common species are : — 



G. acuminaf 1(771 (PI. 16. fig. 34 «, b, c). 

 Frustules in front view simply cuneate, or 

 inflated in the middle ; valves attenuated at 

 the base, ventricose in the middle, beyond 

 which they are again expanded ; ends acu- 

 minate, or truncate with an acuminate pro- 

 longation; sti-ife distinct; length of frustules 

 1-360". San Plore deposit. 



G. (/emin(ifu77i. Valves ventricose in the 

 middle, constricted and rotundo-truncate 

 towai'ds each end ; stria3 distinct ; stalks 



long, thick, densely intei-woven ; length of 

 frustules 1-216 to 1-180". 



G. oUvaceimi . Densely crowded, forming 

 a mucous mass ; frustules broadlj^ cuneate 

 (fr. V.) ; valves obovato-lanceolate ; strife 

 distinct; length of frustules 1-1020''. 



G. cu7-vatum. Frustules curved ; valves 

 obovato-lanceolate; striae faint; length 

 1-720". 



BiBL. Ehr. Infus. 215 : Kiitzing, Bacill. 

 84,- and Sj). Alff. 6S; Smith, Br. Diatom. 

 76; Ealfs, Aim. N. H. 1843, xvi. 459. 



G0:MPH0SPH^E'RIA, Ktz.— a genus 

 of Palmellacese ; with the cells radiating, 

 and united into groups in a globose mucous 

 envelope. 



G. ajyonina. In pools. (Rabenhorst, Fl. 

 Al(f. ii. 55.) 



GONATOBO'TEYS, Corda.— A genus of 

 Mucedines (Hyphomycetous Fungi), the f er- 



Fig. 284. 



Fig. 285. 



Gonatobotrys simplex. 



Fig. 284. A fertile filament. Magn. 100 diams. 

 Fig. 285. A sporiferous joint, with most of the 

 spores removed. Magn. 600 diams. 



tile filaments of which present at intervals 

 swollen articulations, on which are attached 

 simple ovate spores (figs. 284, 285). 



BiRL. Corda, Icones Fungo7-vm. 



GONATOR'RHODON, Corda. — A 

 genus of Mucedines (Hyphomycetous 

 Fungi), the fertile filaments of which have 

 at intervals swollen artictdations, whence 

 arise moniliform chains of spores (fig. 286). 



BiBL. Corda, P/'«c/<(^. eu7-op. Schiiimielb. 

 pi. 3. 



GOXATOZY'GON, De Bary.— A genus 

 of Biatomacene. 



Char. Cells cylindrical or truncate-fusi- 

 form, neitlier constricted nor incised, united 



