i8 MONOBLEPHARIDACEAE— LABOULBENIACEAE 



Order 6. CONFERVALES 



Typically multicellular filamentous algae, propagating by zoospores, and repro- 

 ducing by the union of isogametes, or by heterogametes borne in antherids and oogones ; 

 one fungous family. 



Family 13. MONOBLEPHARIDACEAE 



ScHROETER io6, 7: 277, 14 : 452, 16: 394 

 Mycelium filamentous, one-celled or septate, producing zoospores and sex cells; 

 zoospores i-ciliate arising in terminal sporangia; antherids cylindric producing ciliate 

 antherozoids ; oogones globose, terminal, opening by a pore, l-spored. 



I. Zoospores i-ciliate 



1. Mycelial threads equal throughout Monoblepharis 7: 277, S. 107 



2. Mycelial threads constricted, necklace-like 



Gonapodya 14:452, S. 107 



II. Zoospores two or more ciliate 



1. Zoospores 2-ciIiate Diblepharis 16:395 



2. Zoospores many-ciliate Myrioblepharis 14: 455 



Class 4. ASCOMYCETES 



Fungi usually destitute of a conspicuous mycelium, reproducing by means of a 

 spore-fruit containing asci (perithecium or apothecium), the spore-fruit occasionally 

 reduced to a group of naked asci. 



Order 7. LABOULBENIALES 



ThAXTER 197, LiNDAU 491 



Family 14. LABOULBENIACEAE 



8: 909, 9: 1130, II : 446, 14: 72s, 16: 674, 17: 915 

 Receptacle consisting of two to many cells in a row, or parenchyma-like, regu- 

 larly producing from the cells one or more appendages bearing antherids as a rule; 

 antherozoids normally endogenous, borne within flask-like, simple or compound an- 

 therids, rarely produced like conidia, i. e., naked or exogenous ; perithecia one to many, 

 stalked or sessile, terminal or lateral on the receptacle, resulting from fertilization 

 by means of a trichogyne ; asci seriate, mostly 4-spored, spores usually- 2-celled. 

 I. Antherozoids endogenous, i. e., in closed antherids 

 I. Antheridial cells forming a compound antherid 



a. Dioecious 



(i) Perithecia and appendages in pairs to the right and left 



Dimorphomyces T. 264, L. 497 

 (2) Perithecia and appendages in a row 



Dimeromyces T. 267, L. 497 



b. Monoecious 



(i) Antherids arising on an appendage 

 (a) Antherids lateral 

 X. On a. subbasal cell of the appendage 



Cantharomyces T. 271, L. 497 



