CARPOASC1. 123 



conidiophores. These branch at their summits and bear flask- 

 shaped cells from which, the conidia are abstricted. The ascocarps 

 which, both in size and colour, resemble grains of sand, have only 



FIG. 111. Penicillium crustaceum : a conidia (x 300); b germination of conidia; c small: 

 portion of mycelium, produced from a conidium at *, with five conidiophores ; d young 

 conidiophore (x 630), a flask-shaped cell is abstricting a conidium; e the same conidio- 

 phore after 9-10 hours. 



FIG. 112. Penicillium crustaceum: a two spirally-coiled byphse arise from the my- 

 celium, from one of which (ascogone) the asci are produced ; fc a further step in the- 

 development of the ascocarp ; the branching ascogone is surrounded by sterile hyphae ; 

 c section of young ascocarp ; the larger hyphaa in the centre are the ascogenous. 

 hypha?; these are enclosed by a pseudo-parenchyma of sterile hyphas (x 390); d series 

 of ripe asci with spores ; e four ascopores seen laterally ; / germinating ascosporea 

 (x 800). 



