BY D. McALPINE. 475 



(3) Glomeruli. — I appty this term to pale or dirty green, or 

 even brownish capsules, generally more or less spherical or hemi- 

 spherical, and imbedded in and surrounded by the hyphse. They 

 are very common, and vary considerably in size from 75 to 470 /x. 

 in diameter. The surface is I'aised into minute rounded elevations, 

 a structure easily accounted for on crushing and examination. 

 They are often arranged in groups or in chains, and then they 

 become somewhat polygonal from pressing against each other. 



These capsules burst readily when ripe, and are found to 

 consist of an outer green la3'er and inner colourless contents. 

 The outer layer is composed of numerous clusters of green cells, 

 each like a miniature mulljerry, and measuring about 22 /^ in 

 diameter, hence the mammillated appearance of the surface. 

 These clusters act like gemmae and reproduce the disease on 

 another Citrus-leaf, according to Penzig.* Inside this green shell 

 are innumerable spherical, hyaline cells, large and small, imbedded 

 in a gelatinous mass. They are either solitary or attached to 

 each other by slender necks. The contents are turbid, with a 

 relatively large vacuole, and while the larger are from 12-13 ij. in 

 diameter, the smaller are from 5-8 }i in diameter. 



This has been assigned to the form-genus HeJerobotri/s, Sacc, 

 and it is also found in connection with the " Sooty Mould " in 

 Italy. 



Penzigf describes and figures it as a stage in Meliola p"nzi(/i, 

 8acc., as a third conidial form, hitherto kuoVn as //. pamdoxa, 

 Sacc. It is interesting to observe that it is a different form of it 

 we have in Australia, as the following account of the Italian form 

 by Penzig will show (for the translation of which I am indebted 

 to Dr. Gagliardi). He says : — " //. jmradoxa, Sacc, appears to 

 th(i naked eye as a small black globe, one-third of a millimetre in 

 diameter, closely imitating the form of a perithecium. In fact, 

 when we examine this small globe under the microscope, we can 



* AnnaH di Agricoltura, p. 322, 1887. 

 t L.r. p. 321, and Atlas PI. xxiv. fig. 4. 



