FUNGI IMPERFECTI 



conidium forms secondary functional spores called ' Deuteroconidia,' 

 which are the reproductive spores. 



III. The Conidia [sing. Conidium) are spores which differ from 

 the thalliis in being incapable of forming new spores or hyphse 

 while still attached to the parent mycehum. They show great 



Fig. 537.— a Blastospore from Fig. 538. — A Chlamydospore from 

 Cyyptococcus myvemecicB Chal- Trichophyton currii Chalmers 



MERS AND ChRISTOPHERSON. AND MARSHALL. 



variety of form, being rounded, stellate simple or septate (stauro- 

 spore); needle-shaped, simple or septate (scolecospore) ; or spirally 

 twisted, simple or septate (helicospore), and of structure being 

 simple (amerospore) or divided by septa (did3anospores with two 

 cells and one transverse septum ; phragmospores with two or more 



i 



Fig. 539. — A Hemi- 

 spoRE : Develop- 

 ment FROM Hemi- 

 spora stellata Vuil- 

 lemin, 



(a) Protoconidia ; 



[b) Deuteroconidia. 



transverse septa and three or many cells; dictyospores in which 

 there are longitudinal septa as well as transverse septa). The 

 variation of colour is also of importance as a means of classification. 

 The colouring matter usually occurs in the membrane. 



Their number is also important, as they may be single, formed in 



Fig. 540. — A Hemi- 

 SPORE from Hemi- 

 spora stellata 

 Vuillemin. 



Fig. 541 .-^ Aleuriospores 

 FROM AleuHsma flavis- 

 simum (Link, 181 6), 



EMENDAVIT CHEVA- 

 LIER, 1836. 



(After Vuillemin.) 



