. British fungi (hymenomycetes). Basidiomycetes; Fungi -- Great Britain. LEUCOSPORI. Spores 6-7 x 4 mk. B. Name—integer, whole. Minute but perfect. Pers. Omphalia. Ic. 6-* descr. t. 13. f. 5. Fr. Monogr. \. p. 193. Hym. Eur. p. 165. Icon. t. 7$.f. 6. Berk. Out. i>. 134. C. Hbk. n. 230. Illust. PI. 252. .S. Mycol. Scot. n. 208. A. buccinalis Sow. /. 107. An uncertain species. Fries (Hym. Eur. p. 162) says it approaches A. stellatus chiefly in the stellate base, but from the slightly fleshy pileus it is perhaps a young form of A. umbelliferus. Berkeley (B. &* Br. n. 1930*) says, " Th
. British fungi (hymenomycetes). Basidiomycetes; Fungi -- Great Britain. LEUCOSPORI. Spores 6-7 x 4 mk. B. Name—integer, whole. Minute but perfect. Pers. Omphalia. Ic. 6-* descr. t. 13. f. 5. Fr. Monogr. \. p. 193. Hym. Eur. p. 165. Icon. t. 7$.f. 6. Berk. Out. i>. 134. C. Hbk. n. 230. Illust. PI. 252. .S. Mycol. Scot. n. 208. A. buccinalis Sow. /. 107. An uncertain species. Fries (Hym. Eur. p. 162) says it approaches A. stellatus chiefly in the stellate base, but from the slightly fleshy pileus it is perhaps a young form of A. umbelliferus. Berkeley (B. &* Br. n. 1930*) says, " This is certainly no form of A. umbelliferus ; and it is too fleshy to be the same as A. stellatus. It is, as Sowerby says, not uncommon. It has the habit of A. ptychophyllus Cd., a species not noticed by Fries; but the gills are not ; C. Illust. PL 272. Submenus IX. PLEUROTUS (irXevptv, a side ; ovs, an ear). Fr. pieurotus. Syst. Myc. i. p. 178. Stem excentric, lateral, or none. Epiphytal (very rarely growing on the ground}, irregular, fleshy or membranaceous. The Pleuroti are very easily dis- tinguished from the subgenera with cartilaginous stems (VI. -VIII.); but from the other subgenera, which have the hymenophore continuous with the stem (), they are only distinguished by their place of growth being on wood. For many Pleuroti of the first section when growing ver- tically — , A. corticatus, ulmarius, spodoleucus — have the stem central and the pileus regular and horizon- tal. On the contrary, various species of Clitocybae and Omphalias in a slanting situation, especially on the sides of roads, vary in form and become excentric and oblique. Among the Lactarii, Cantharelli, Marasmii, and all the last gen- era of the Agaricini, there are also forms analogous to the Pleuroti. Fr. Hym. Eur. p. 166. The species are very polymorphous. Usually late in the year (but A. ostreatus also occurs in spring). Most are mild, and some — , A. ulmarius, t
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