18 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 ioo, 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, i-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-ciliate 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: 1 130. 11: 446, 14: 7^5. 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 

 1. Antheridial cells forming a. compound anther id 



a. Dioecious 



(1) 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 



(1) Antherids arising on an appendage 

 (a) Antherids lateral 

 x. On a subbasal cell of the appendage 



Cantharomyces T. 271, L. 497 



