*-^ ^ 



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1 ." 



THE GENUS CHLOROCIIYTEIUM. 



25 



the host assume a figuro-of-cight form, the lower s[)here becoming the 

 L'uJophyiic cell and the smaller sphere the nij)plo-shapo(l projection. Celh 

 in the centre of tlie host liave no projection. 



JJah. Tm Polysiplionia^ Schizonema^ Campamdaria Jle^'uosa^ Infusoria, etc* 



Vak. PoKriiYiLE (N. L. Gardner), nob. 



Cldororhfjtruun Porphijva\ N, L, Gardner in *'New Pacific Coast Marine 

 Algus I.;' Univ. Calif. PiibL in Bot. roK yi. June 1917, 



Cells spherical, 40-GO/x in dianietci-, completely embedded in host^ wiLhout 

 nipple-shaped projection. Chroniato})hore single, at first small, covering 



U[)per part of young cell, then extending by means of radiating bands to 

 cover the whole cell. Zoogonidia sexual^ fusiform or almost spherical, 3-4 /i 

 in diamuter. In germination of ^^ygote no part remains on epidermis of host. 

 Ilab, In the outer membrane o^ Porpliijra i)erfoTata and segreyaia^ Setcliell 

 k Hus. 



X. C. MooREi, N. L. Gardner in " New Pacific Coast Marine Alga^, I.,'' 

 Univ, Calif. PubL in Bot. vol. vi. no. 14, p. 382, June 1917. 



CIdorocijstis Colinii^ G* T. Moore in ''New or little known Unicellular 

 AIg;e, L/' Bot. Gaz. vol. xxx. (1900) p. 100, pi. 10. 



Cells spherical, elliptical, or pear-shaped^ lG-2t)yL6 in diameter. Cell-wall 

 uniformly thick and destitute of a neck ; chloroplast parietal, completely or 

 partly lining the cell- wall. Propagation by successive bipartition into 

 quadriciliute zoogonidia of two sizes, each with a posterior chloroplast and 

 anterior pigment-spot. Larger zoogonidia spherical, 6-7 /^ in diameter, with 

 a pyrenoid; smaller zoogonidia pear-sha])cd, 2'G-3'5/i in diameter. Escape 



of zoogonidia is effected by the lifting of a circular lid 10^ in diameter from 

 surface of cell, usually without a mucous vesiide ; no fusion observed. 



Hub. Partly embedded in or wholly epiphytic upon tubular fronds of 

 Enteromorplicu 



Doubtful Fokms. 



XI. C. L^TUM, Schroetor, 'None Beitriige zur Algenkunde Schlesiens' in 

 Jahresber. Schles. Gesellsch. 1883^ p. 181. 



Cells globosej com})letely embedded ; wall of uniform thickness, destitute 

 of neck. Cell-contents often bright yellow, bright green when submerged. 

 Propagation by ''spores'^ produced by successive bipartition. 



Ilab. In leaves of Lyclinis Flos-cucali. 



XII* C. VIKIDE, Schrooter, 'Neue Beitrafje zur Algenkunde Schlesiens' in 

 Jahresber, Schles. Gesellsch. 1883, p. 181- 



Cells globose^ often produced into a short neck; cell-wall uniformly 

 thickened and gelatinous ; cell-contents bright green with rounded lobes ; 

 a red pigment is present. 



llab. In leaves of Ritmex ohtusifolius^ giving a red colour to the epidermis 

 of the host. 



I 



