PLATE II. 



COMMON BROWN MOULD. 



Fio. 1. THE MUCOR PLANT PRODUCED FROM A CONIDIUM. Showing 



Branched hypha. 



Erect hypha (Gr. hyphe, a weaving) terminating in a minute enlargement the sporangium. 

 Fio. 2. Showing 



End of erect hypha. 



Columella (L. a little column). 



Terminal cell, conidia-case, or sporangium (Gr. spora, a seed; angeion, a vessel). 



Wall of sporangium with crystals of oxalate of lime, 



Spores or a endo-conidia (Gr. endan, within ; Iconis, dust). 

 Fio. 3. Showing 



Burst conidia-case or sporangium. 



Collar, the remains of the wall of sporangium. 



Endo-conidia or spores. 

 Fia. 4. Showing 



The conidium germinating and producing a branched hypha, which ultimately develops into the 



form shown in fig. 1. 

 FIG. 5. Showing 



Portion of branched hypha with protoplasm removed. 



No septa. 

 FIG. G. Showing 



Portion of old submerged hypha, breaking up into distinct joints the Chlamydospores (Gr. 

 chlamys, a coat ; spora, a seed) or Mucor-torulse, each containing a vacuole. 



Note. Vacuolated protoplasm and septum. 

 FIG. 7. THE SEXUAL PROCESS 



a fy b. Two distinct processes given off from the hyphse. 



c. Terminal cell separated off from each process. 



d. Union of the two terminal cells to form a zygospore (Gr. zugos, a yoke ; spora, a seed). Since 



the uniting elements closely resemble one another the process is called conjugation. 



DIAGRAM OF THE PRO-EMBRYO OF MUCOR PRODUCED FROM A ZYGOSPORE. Showing 

 Zygospore. 

 Unbranched hypha. 

 Erect hypha. 



Conidia-case or sporangium, containing conidia, each of which can produce the Mucor plant 

 (% I)- 



CLASSIFICATION OF MUCOR. 



Kingdom Plantse. 



Sub-Kingdom Thallophyta. 



Class Zygosporeaj, marked by its sexual process, viz. conjugation. 



Group Fungi. 



Order Zygomycetes. 



Gemw Mucor. 



Common Name Brown Mould. 



