66S 



THE SUBDIVISIONS OF THE VEGETABLE KINGDOM. 



Class Y.— FUNGI. 



Parasitic or saprophytic plants destitute of chlorophyll and for the most part 

 possessing a mycelium. Sexual reproduction known and generally admitted in 

 the Phycoinvcetes only. Asexual reproduction by means of spores and conidia. 



Sub-class I. — Phtcomtceies. 



iiycelium for most part unicellular, tubular, and branched. Sexual reproduction 

 both by conjugation of equivalent cells and by egg-cells. 



Fig. S70 — CliyWdlaoero and Aiioyllstaoow. 



, s, ' Lageiudimn Rabenhorstii, parnsitlo upon Spirogyra. «. » Poliiphaffus Eutjlemv. ' KhiiiiUomyim apophysattiS, paraaiUo 



on an oogonium ot Saprxileiinia, 



Alliance XIV. — Oomyoetea 



Families: Peronosporew, Saprolegniacece, OliyfHdiactw, Ancylistacciv, 



Entovwphthorea. 



Mycelium often very slightly developed; asexual reproduction by means of 

 swarm-spores; sexual reproduction by egg-cells. On the whole in this group we ai-e 

 dealing with Fungi which very nearly resemble the Algre of the Allimice Siphonew 

 (e.g. Vaiu'heria) both as regards the structure of their mycelium and mode of ropro- 

 duction. A loss of sexuality is to be noted in many membera of this group. 



