148 BRAUN, ON UNICELLULAR ALG^, 



tlie most part pacliydermatous, and gcrmiiiatiug- tlirough pores or a 



rupture of the exospore : 



The naked and acrogenous spores of most of the Coniomycetes 

 and Hypliomycetes ((jften compound or multicellular) ; the 

 basidiospores of the Gasteromycetes and Hymenomycctes (for 

 the most part simple) ; the stylospores of the Ascomycetes 

 {Bulgaria, Cenangium, Lermalia, &c.) and of the Lichens 

 {Scutula^. 



c. Spekmatia {sjiermaloconidia, androconldia)^ very slender, minute cells, 

 often exhibiting a tremulous motion, sterile or fecundating:* 



In the Lichens and Ascomycetes, and also in the Hyphomycetes, 

 e. g., in Trichothecium ; and the Hymenomycctes, e. g., in 

 Tremella and Dacrymyce. 



With respect to the parts, lastly, by which the propagative 

 cells are produced, it is well known that, in the different 

 orders of Cryptograms, parts widely differing in value are 

 designated under the same name, or that parts essentially 

 identical have received different appellations, so that a more 

 accurate terminology is much required. Thus it is, in the 

 first place, desirable to distinguish in the organs of fructifica- 

 tion those which are directly such, and simple, i. e., parent- 

 cells, within which propagative cells are generated, and those 

 which more remotely perform the function and are compound, 

 — those within which parent-cells are formed and contained. 

 The former the author would term — 1, sporoajtia,f when 

 they contain spores ; 2, goniocytia, if containing gonidia ; 

 3, sper7natocytia,X if containing spermatogonidia or sperma- 

 tozoidia ; and the latter, for the same reason — 1, sporangia 

 [sporocarpia, Schleiden), to which belong the sporangia of 

 Ferns and Equisetace?e, analogous to which are the locula- 

 ments, or thecce, of the anthers in phanerogamous plants, and 

 also the sporangia of two kinds of the Lycopodiacese (" an- 

 theridia" and "oophoridia,'^ Spring), those of the Musci and 

 Hepatic(e, and lastly the apothecia, or cymatia, sind pe7-ithecia 

 of the Lichens and Pyi'cnomycetes, as well as their pycnides 

 (Tulasne), containing stylospores, and the peridia of the 



* Tulasne has noticed the germination of the spermatia of Claviceps 

 purpurea {Spliacelia segetum), of Spharia typhina, and S. Laburni ; and 

 Hoffmann ('Bot. Zeit.,' 1854, p. 2G8) the incomplete germination of the 

 spermatia in Hageiiia ciliaris, tubercularia, and Trichotliecium roscum ; the 

 boundary, therefore, between the spermatia and other kinds of couidia would 

 seem to be but ill defined. 



f Schleiden terms these organs " Sporangia," a term elsewhere frequently 

 used to express compound sporiferous organs ; in the Alg^c they are callea 

 sometimes " sporoeysts," sometimes " pcrispores " (as in the Fucacea) ; the 

 sporocytia of Lichens, Pyrenomycetes and Discomycetes are known under 

 the names of " asci " and " thecse." 



X " Autheridia " of tlie Fucacea. 



