OEDEB MUCORALES 



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Fig. 59. Mucorales, Family Endogonaceae. (A-F) Endogone lactiflua Berkeley. 

 (A) Young gametangia. (B) Gametangia in longitudinal section, showing numerous 

 nuclei. (C) Gametangia in longitudinal section, showing one privileged nucleus in the 

 right-hand gametangium, the others receding basally. (D) Gametangia set off by 

 septa and male nucleus entered into the female gametangium. (E) Zygospore budding 

 out from top of female gametangium. (F) Practically mature zygospore. (G) Endogone 

 pisiformis Link, mature sporangium. (After Bucholtz: Botan. Centr. Beihefte, II Abt., 

 29(2):147-225.) 



sembling the mycelium and sporangiophores of M. ramannianus Moller, 

 and like that species with a pink to rose color. Very numerous chlamydo- 

 spores were produced also and eventually, when grown on 1 per cent malt 

 agar, zygospores of the typical Endogone type. The sporangial walls 

 quickly break up or, when placed in water, deliquesce, letting the spores 

 escape and revealing a spherical columella. The species is homothallic, 

 for cultures from a single spore produce zygospores. Endogone occidentalis 

 contains in its sporocarps both chlamydospores and zygospores, but 

 when brought into culture by Miss Kanouse gave rise to chlamydospores 

 only, producing neither zygospores nor sporangia. In none of the cultures 

 by Miss Walker or Miss Kanouse could typical sporocarps be obtained. 

 Because the sporangia obtained from cultures of E. sphagnophila are 

 Mwcor-like, not like those of E. malleola Harkness and E. reniformis 

 Bresadola, Miss Kanouse segregates the latter two in a separate genus 

 Modicella. The two other genera assigned to this family, Sclerocystis and 



