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88 THE BRITISH SMUT FUNGI<br />
Entorrhiza aschersoniana (Magn.) Lagerh.<br />
Schinzia aschersoniana P. Magnus, Ber. deutsch. hot. Oes.. vi, p. 103, 1888..<br />
Entorrhiza aschersoniana (Ka,^.) Lagerheim, Hedioigia, xxvii, p. 261, (Aug.)<br />
1888. I<br />
Bori in swellings of the roots, 3 mm. diam. and up to l' cm. long. Spcn-e mass<br />
cream-coloured, then light- brown, granular. Spores elliptical, thick-walled,yellow-brown,<br />
coarsely verrucose, 17-20 X15-17/x<br />
. (Fig. 12). [No British material examined.]<br />
Sporidia sickle-shaped, 5-10 X-2-3 fi.<br />
On Juncus bufonius, nr. Aberdeen, Scotland (Trail,<br />
Scot. Naturalist, N.S., vi, p. 241, 1884; Ann. Scot. nat.<br />
Hist., No. 47, p. 188,1903).<br />
FIG. 12. Entorrhiza ascher- This, or allied species, have also been reported<br />
Spores. X500. (Rabenh., ^^ '^• squarrosus and J. uligmosus, nr. Glasgow<br />
Fungi Europ. 3902.) (Cameron, Proc. Trans, nat. Hist. Soc. Glasgow, N.S., i,<br />
p. 299, 1886, as E. cypericola), and on J. articukitus<br />
(Trail (1903) loc. cit., as E. digitata; Schwartz (1910), as E. cypericola) but in<br />
the absence of specimens the identity of the species involved must remain in<br />
doubt.<br />
Spore germination is not weU known. Weber (1884) germinated spores which had<br />
been overwintered in moist sand out of doors in water at 10° C. during February,<br />
and stated that in nature germination occurs in early May. The spores formed<br />
one to four septate hyphae from the apices of which solitary sickle-shaped<br />
sporidia developed. Brefeld (1912), who doubted the relationship between<br />
Entorrhiza and the Ustilaginales, stated that on germination richly branched<br />
hyphae produced long, pointed conidia in basipetal succession on sterigmata as<br />
in Acrostalagmus. The conidia germinated and repeated the process. Schwartz<br />
(1910) who made observations on the development of the chlamydospores was<br />
unable to induce them to germinate.<br />
ScHEOETEEiA Winter,<br />
Rabenh. Krypt. Flor., i (1), p. 117, 1881<br />
Type: Schroeteria delastrina (Tul.) Winter on Veronicapraecox, Poictiers, France.<br />
Synonym: Oeminella Schroeter, 1869 [non Turpin].<br />
Sori in the seed capsules of species of Veronica. Spore mass dark coloured.<br />
Spores in pairs. Spore germination, see p. 89.<br />
Schroeteria delastrina (Tul.) Wint.<br />
Thecaphora delastrina Tulasne, Ann. Sci. nat.„Bot.,SGv. 3, p. 108, 1847.<br />
Geminella delastrina (Tul.) Schroeter, 1869.<br />
Schroeteria delastrina (Tul.) Winter, Rabenh. Krypt. Flor., i (1), p. 117, 1881.<br />
Sori in the seed capsules. Spore mass granular, at first grey-green, later dark<br />
grey. Spores in twos, or, less frequently, single, globose when single, flattened<br />
on side of contact when one of a pair, tinted grey-green, thin-walled, verrucose,<br />
9-12 /i diam. (Fig. 14).