UPON SCAI.E-rxSECTS. 81 



Plate IV. 



Fig. 51. — This shows the development of the Cephalos- 

 porium from below the scale — only a segment is drawn. 

 s, portion of scale ; c, conidiophores. x 60. 



Fig. 52. — Branched conidiophores of Cephalosporium. x 



"520. 



Fig. 53, — Single conidiophore in dry state, c, globular 

 head of mucilage in which the conidia are embedded, x 

 550. 



Fig.D-k. — Single conidiophore after treatment with acetic 

 acid. The conidia c, are now visible, x 550. 



Verticillium. 

 Fig. 55. — Conidiophore. c, conidium. x 550. 



PeziotricJium (Botryotrichum) ? 



Fig. 56. — Scales of Aonidia affected by fungus on piece o/ 

 leaf of Memecylon. s, scales without fungus, x 3. 



Fig. 57. — Detached scale with fungus, b, sterile bristles ; 

 m, conidial mycelium, x 10. 



Fig. 58. — One of •bristle-hyphse showing swollen hyaline 

 tip. x 100. 



Fig. 59. — Part of bristle-hypha more magnified, x 

 320. 



Fig. 60. — Portion of conidial mycelium, c, conidia. 

 x 320. 



Fig. 61.— Conidium. x 550. 



Microccra. 



Fig. 62. — Piece of leaf containing scales of Aspidiotus 

 affected with the fungus, s, scale without fungus. Natural 

 size. 



9(1)06 (11) 



