202 



:^IANUAL OF POISONOUS PLANTS 



Mucor septatus, Siebenmann. 



Mycelium at first white, later grayish ; sporangia light yellowish brown, 

 sporangia small; colmuella colorless; conidiophore branched; spores small 2.5 m 

 in diameter. 



Distribution and Habitat. Found in Europe. 



Pathogenic properties. Pathogenic for human beings, found in the ear. 



Mucor cquiniis. (Costaiitin and Lucet), Pammel 



Mycelium branched, at first white or whitish, floccose with simple pedicels 

 withous rhizoid processes, erect or suberect, becoming fascicled, hyphae 8-12 M 

 in diameter ; columella spherical or subspherical 20- 50m in diameter ; spore 

 roundish or slightly angular smooth 4 M in diameter, chlamydospores numerous 

 especially at blood temperatures. 



Distribution. First found in Europe. 



Pathogenic properties. Found in horses. Guinea pigs and rabbits inoculat- 

 ed peritoneally die on the 5th or 6tli day. 



Mucor parasiticus (Lucet and Costantin), Pammel. 



Mycelium spreading, branched, brownish fawn color producing stolons and 

 rhizoids; sporangia-bearing peduncles branched; conidiophores 12 to 14 m wide 

 1-2 cm. long; columella ovoid pyriform slightly brownish 7-30 M high; sporangia 

 8 to 37 m; lateral sporangia similar but smaller. Grows readily in nutrient 

 media. The rhizoids sink into the substance, the simple conidiophores rise from 

 the rhizoids. Lucet and Costantin placed this species in a new genus Rhizomucor. 



Pathogenic properties. It is essentially parasitic and was isolated from 



lb. Hmfusa splwcrosf'crma. 1. Larvae of Cabbage But- 

 Conidiophorcs and conidia x 300. 4. Conidiuiu .x 600. 



...^ _ ._.. _^^ 350. 6. Single zygospore x 600. 7-12. Coiiidiobolus 



utric'uYosus;^ iound on' The" gelatinous fungi like the Jew's Ear (Auriciilarw). 7. Conidio- 

 phore X HO. 8-9. Same, much enlarged. 9. Discharging conidium .10-12. I'ertilization 

 and forming zygospore. After Brefeld. 



Fig. 46. I'jitomopthoraceae. 

 terfly. 2. Sectional view. 3. 

 5. Mycelium with zygospores 



