BRAUN, ON UNI ELLULAR ALG^E, 147 



B. A series of Spores (macrospores and microspores, if differinq; in size iu 



the same species ; liypnospores, if dormant for a long time) : 



a. True germinating spores (some witiiout fecundation) : 

 n. Simple, developed into a single germinal plantlet : 



* Produced singly in each naked cell : (Edogonium, Bulbochcete, 



TJlothrix (Jlormotrichu'ni), Vmicheria ; 



** Gregarious in each naked cell : Saprolegnia, Sphceroplea ; 



*** Solitary in a pair of conjugated cells : BesmidiacecB, Zygmmacem ; 



**** Serial, in cells {ctsci) of a compound organ [apothecvum, perithe' 

 cium ; the simple spores of some Lichetis and Ascomycetes) ; 



***** Quaternary in the prim.ary maternal cells (singly in the secondary) 

 within compound organs : Floridea (" sphserospores " without 

 fecundation ?), Musci, Uepatica, Filices, Equisetum, &c. (fecun- 

 dation 0). 



j8. Compound (multicellular),* throwing out several germs, — phrag- 



MATOSPORES, POLYPLASTIC SPORES : 



Serial in the cells ( asci^ of a compound organ {apothecium, 

 perithecium ; most Lichens and Ascomycetes). 

 y. Sectile, breaking up within the perispore into several gonidia, each 

 of which germinates : 



* Uudergoing fecundation : Fucoidece ; 



** Without fecundation : Closferlum (/'), Fuastrum (F), Rivularin {('). 



b. Subservient to fecundation — androspores : 



a. Directly fecundating : 



Pollen of phanerogamous plants. 



y. Indirectly fecundating, producing spermatozoidia in their interior : 

 microspores of Selaginella, Isoeles, and the Rhizocarpece. 



C. A series of Conidia : 



a. Conidia in the more restricted sense of the term, arising from a 

 thallus (mycelium') differing very little from vegetative cells, for the 

 most part smooth-skinned (leptodermatous), germinating at once and 

 in totality: 



To this category appear to belong the spores of Batraehospermtim 

 and Lemania ,-f and obviously those of the Hyphomycetes, as 

 well as of the Pyrenomycetes {Erysiphe) and Hymenomycetes 

 {Dacrymyce). 



h. Acrospores of authors {sporoconidia), produced in special organs more 

 distinct from the thallus ; widely different from vegetative cells, for 



* The individual cells of compound spores liave by some been termed 

 " sporidia," terms analogous to " folium " and " foliolum ;" Fries employs 

 the term "sporidia" to designate the naked spores of tlie Hymenomy- 

 cetes. 



f The spores of Lemania arising from the separated joints of the in- 

 ternal filaments germinate together with the perispore itself. {Vid. Wart- 

 mann, Anat. und Entwickelungsgeschichte der Algengattung ^'Lemania" 

 (1854), p. 12, t. 3, f. 5. 



