378 MILESINA 
3. Uredo Scolopendrii Schrét. (probably a Milesina). 
Ascospora Scolopendrii Fckl. Symb. Myce. Nacht. ii, 19. 
Uredo Scolopendrit Schrét. Krypt. Flor. Schles. p. 374. Plowr. Ured. 
p. 256 p.p. Sace. Syll. vii. 860 p.p. 
U. (2) Pteridum White, Scot. Nat. 1877, iv. 27, pl. 2, f. 6. 
Milesia Polypodii White p.p.; see Gard. Chron. 1892, 3. xii. 776 
(specimen on Scolopendrium in Herb. Cooke). 
Uredospores. Sori similar to those of Milesina Blechni, but 
larger, about 1 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—45 x 15—23 p; epispore 
13—2 p thick. 
On Scolopendrium vulgare. Rare; Scotland, England 
(Cooke), Forden (Rev. J. E. Vize), Warton, N. Lancs., March, 
1908 (J. W. Hartley in Herb. Kew). (Fig. 283.) 
- Only known in the uredo-stage, but closely allied to Mf. Blechni. The 
name, Uredo Scolopendrit, has been used to include many other species. 
Besides these parasites on Ferns, Plowright also records under Uvedo 
Polypodii (p. 256) a fungus on Adiantum Capillus-Veneris. If this is 
correct, it was probably Hyalopsora A dianti-Capilli- Veneris 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 spinulosum and Credinopsis 
Jjiticina 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. 
