378 MILESINA 



3. Uredo Scolopendrii SchrSt. (probably a Milesina). 



Ascospont Scofo/imtL'ii Fckl. Symb. Myc. Nacht. ii. L9. 



Uredo Scolopendrii SchrSt. Kxypt. Flor. Schles. p. 374. Plowr. tJred. 



p. 256 p.p. Sacc. Syll. vii. 860 p.p. 

 r. Ptvridum White Scot. Nat. L877, iy. 27, pi. 2, f. 6. 

 Milesia Polypodii White p.p.; see Gard. Chron. 1MJ2, 3. xii. 77<; 

 specimen on Scolopendrium in Serb. Cooke). 



Uredospores. Sori similar to those of Milesina Blechni, but 

 larger, about J mm., brown, in loose irregular groups; spores 



Fig. 283. U. Scolopendrii. Portion of frond of Scolopendrium, showing 



sori, nat. size ; three uredospores, x 600. 



very numerous, oozing out, colourless, clavate, strongly echinu- 

 late all over, especially at the apex, 35 — 45x15 — 23/*; epispore 

 H— 2 fx thick. 



On Scolopeiid n'v in vulgare. Rare; Scotland, England 

 (Cooke), Forclen (Rev. J. E. Vize), Warton, N. Lanes., March, 

 1908 (J. W. Hartley in Herb. Kew). (Fig. 283.) 



Only known in the uredo-stage, but closely allied to M. Blechni. The 

 name, Uredo Scolopendrii, has been used to include many other species. 



Besides these parasites on Ferns, Plowright also records under Uredo 

 Polypodii (p. 256) a fungus on Adiantum Capillus- Veneris. If this is 

 correct, it was probably Hyalopsora Adiu nii-('<i ^illi- V< -neris Sydow (Annal. 

 Mycol. 1903, p. 248), which, I am informed by Herr H. Sydow, occurs in 

 Istria and North Italy. 



It is quite possible that two others may be found in Britain, viz. 

 Milesina Kriegeriana Magn. on Aspidium spinxdosum and Uredinopsts 

 Micina Magn. on Polypodium Phegopteris, but I have seen no British 

 specimens. The latter is so likely to occur here, that it is advisable to 

 give a description of it. 



