. The British rust fungi (Uredinales), their biology and classification. Uredineae. 378 MILESINA 3. Uredo' Scolopendrii Schrot. (probably a Milesina). Ascospora Scolopendrii Fckl. Symb. Myc. Nacht. ii. 19. Uredo Scolopendrii Schrot. Krypt. Flor. Schles. p. 374. Plowr. Ured. p. 256 p.p. Sacc. Syll. vii. 860 p.p. U. (?) Pteridum White, Scot. Nat. 1877, iv. 27, pi. 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 |- mm., brown, in loose irregular groups; s

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. The British rust fungi (Uredinales), their biology and classification. Uredineae. 378 MILESINA 3. Uredo' Scolopendrii Schrot. (probably a Milesina). Ascospora Scolopendrii Fckl. Symb. Myc. Nacht. ii. 19. Uredo Scolopendrii Schrot. Krypt. Flor. Schles. p. 374. Plowr. Ured. p. 256 p.p. Sacc. Syll. vii. 860 p.p. U. (?) Pteridum White, Scot. Nat. 1877, iv. 27, pi. 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 |- mm., brown, in loose irregular groups; spores r^. 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—23yLt; epispore li—2 fji thick. On Scolope-iidrium vulgare. Rare; Scotland, England (Cooke), Forden (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 vised to include ixiany 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 Adianti-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 Magu. on Aspidium spinulosum and Uredinopsis filicina 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.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origi