NO. 6 PHYCOMYCETES COLLECTED BY W. R. TAYLOR 103 



Monoblepharidales 



5. Monoblepharella n. gen. 



Mycelium, contents, zoosporangia, zoospores, oogonia, antheridia, and 

 antherozoids as in Monoblepharis, the egg after fertilization emerging 

 from the oogonium and by means of the persistent flagellum of the male 

 gamete undergoing a period of swarming, after which it encysts and 

 becomes a thick-walled oospore; the oospore upon germination forming 

 the vegetative mycelium. 



Mycelium, sporangia, zoosporis, oogonium, antheridia, antherozo- 

 oideis simuli Monoblepharis; ova inseminata postice uniciliata, natantia; 

 oosporis in aqua liberis, germinatio formati mycelio. 



Monoblepharella Taylori comb. nov. 



Monoblepharis Taylori Sparrow,- in Mycologia 31 : 737. 1939. 



Mycelium well developed, consisting of tenuous, flexuous branched 

 hyphae 2 — 5ix in diameter, the contents reticulately vacuolated; sporan- 

 gia narrowly siliquiform with a tenuous wall, variable in size, 35 — 65ju, 

 long by 5 — 9/A in diameter, with a very narrow (2.5 — 4/a) base, occur- 

 ring singly or in pairs at the tips of the hyphae or after sympodial branch- 

 ing of the hypha appearing lateral; zoospores ovoid or somewhat cylin- 

 drical, 7 — 9^ long by 4.5 — 5ju, wide, the posterior cilium 2 — 3 times the 

 length of the body ; oogonium at first terminal or after sympodial branch- 

 ing of the supporting hypha often appearing lateral, clavate or obpyri- 

 form with rounded apex and narrow cylindrical base, 15 — 17/i long by 

 8 — 10/A wide, tapering to 2 — 3/x at the base, the contents at maturity 

 forming one or occasionally up to 6 eggs containing numerous large re- 

 fractive globules; antheridium usually hypogenous, several often devel- 

 oped in basipetal succession, consisting of a cylindrical segment of the 

 suboogonial hypha and a beaklike lateral outgrowth 8 — lO/x long by 

 4 — 5/x wide, antherozoids two to five, strongly amoeboid, posteriorly 

 uniciliate, ovoid when swimming and about 5/a long by 'iix wide, escaping 

 through a pore formed at the tip of the beak; zygote broadly ovoid to 

 nearly spherical, 10 — 13/a long by 8 — 10/a wide, posteriorly uniciliate, 

 free swimming, the contents bearing numerous large refractive globules ; 

 oospore formed free in the water, spherical, 8 — 11/x in diameter, with a 

 slightly thickened, light brown, smooth wall, contents bearing globules, 

 upon germination forming a mycelium. 



2 A Latin, but not an English, description has been previously published in 

 Mycologia. 



