TAXONOMY OF THE PILOBOLIDAE 195 



added to the group Pycnopodium and Caiilogaster, placing in the 

 former genus, as Pycnopodium lentigerum, a species which he had 

 formerly included in Pilobolus and which would seem to be merely 

 an abnormal state of P. Kleinii. After Corda's lamented early 

 death, Zobel pubhshed (1854) from his friend's manuscript notes 

 a sixth volume of the Icones, in which he gives a long account of 

 Pilobolus crystallinus containing numerous errors. In his drawing 

 (f. 32) he represents the interior of the subsporangial swelhng as 

 hned with reticulations of orange-coloured granules such as no 

 other author has seen, and which are probably only the meridional 

 streams, occasionally met with but rarely figured,^ disturbed by 

 the pressure to which the preparation had been subjected. 



When Cohn pubhshed, in 1851, his celebrated monograph " Die 

 Entwicklungsgeschichte des Pilobolus crystallinus," he had before 

 him, not that species with which he was really unacquainted, but 

 the species of Montague. He figures the characteristic yellow, 

 spherical, thick-walled spores of Pilobolus oedipus, and then remarks 

 with naive surprise that Corda had represented the spores of P. 

 crystallinus as elhptic and colourless " in contradiction to nature." 



Cesati discovered, in 1850, a species which he pubhshed the 

 next year in Klotzsch's Herbarium vivum mycologicum under the 

 name Pilobolus anoinalus, now known as Pilaira anomala Schrot. 



Bonorden, in his Handbuch (1851), described a species under the 

 name of P. crystallinus, which on account of its round spores Coemans 

 referred to P. oedipus, but which I think there is greater reason for 

 considering as P. Kleinii, forma sphaerospora. 



In 1857 Currey wi'ote a note " On a species of Pilobolus " which 

 he thought to be P. roridus, but his plate and description clearly 

 show that the species he had in view was P. Kleinii ; according to 

 van Tieghem, Leveillc in 1826 had fallen into the same error, giving 

 the name of P. roridus to a form of P. Kleinii. Currey also attri- 

 buted the projection of the sporangium to the eversion and upward 

 pressure of the columella, which he believed not to be thrown off 

 with the sporangium. 



In 1861 Coemans issued his " Monographic du genre Pilobolus," 

 in which he summarised what he had read about this subject, and 

 ^ I figured them in my Monograph (1884), pi. 4, f. 12. 



