ZYGODON. 



[ 829 ] 



ZYMOMES. 



of some Thelephoroid Fungus. Currey has 

 shown that Corda's figure (fig. 812) is not 

 completely accurate, since he finds the 



Fig. 812. 



Zygodesmus fuscus. 

 Magnilied 400 diameters. 



points at the apex of the fertile pedicels 

 each crowned by a spore ; and the normal 

 nimiber of sterigmata is probably four, so 

 that the structure would resemble a basi- 

 dium of Hymenomycetes. The above figure 

 is after Corda. 



BiBL. Berk. Crypt. Bot. 298; Currev, 

 Micr. Jn. v. 126. 



ZYG 'ODON, Hook, and Taylor.— A genus 

 of Orthotrichaceous Mosses, deriving its 

 name i'rom the yoking of the teeth in pairs ; 

 the species are mostly found in mountainous 

 districts and rarely in fruit. 



ZYGOGO'NIUM, Kiitz. — A genus of 

 ZygnemaceDe (Confervoid Algae), consisting 

 of filamentous plants, growing on damp 

 groxmd or in water, gTeen or yellowish 

 when fresh, purple or bro'^Tiish when dry. 

 Kiitzing includes here all Hassall's species 

 of Tyndaridea (Zvgxema) which produce 

 the spore in the cross branch. 



Z. ericetorum, Kiitz. Filaments 1-2160 

 to 1-1440" in diameter, joints as long or half 

 as long again, cylindrical or torulose (fila- 

 ments sometimes slightly branched). Con- 

 jugation rare, apparently mostly 'chain-like,' 

 from one cell to the next in the same fila- 

 ment. Contents green when growing in 

 water, purple when growing on wet heaths 

 (Hass. pi. 41; Greville, Sc.CrypL Fl. pi. 261. 

 fig. 1). Conferva ericetorum, DiUw. 



See Zygnema. 



BrBi,. Hassall, I. c. ; Greville, /. c. ; KUt- 

 zing, Sp. Aly. 445, Tab. Phyc. v. pi. 10; 

 Enq. Bot. pi. 1553 ; Rabenh. Aly. iii. 251. 



ZYGOMYCETES.— A group of Fungi, 

 in which conjugation takes place, corre- 

 sponding to the Conjugatas of the -Ugse, as 

 in the Mucoiini &c. (Brefeld, Schimmel- 

 pilze, 1872 ; V. Tieghem, An. Sc. N. 5. xvii.; 

 Sachs, Bot. 268.) 



ZYGOSEL'MIS, Duj.— A genus of In- 

 fusoria, of the family Eugleuia. 



Char. Form variable ; movement eflected 

 by two flagelliform filaments, incessantly in 

 action. 



Z. nehdosa (PI. 32. fig. 28). Body colour- 

 less, sometimes globular, at others variously 

 expanded so as to become pyiiforni or 

 top-shaped, turbid from the presence of 

 numerous granules. Freshwater; length 

 1-1100". 



BiBL. Dujardiu, Inf. 369; Kent, Inf. 

 417. 



ZY'GOSPORE or Auxospore. — The 

 result of the union of conjugating Algse. 



ZY'MOMES =MiCROZYMES. 



THE END. 



PlilNTKD UV TAYLOR AND !• KANCIS, KED LION COURT, FLEET STREET, 



