. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON LILIACE.*: 235 On Ornithogalum umbellatum. Rare; Lytham and near Carlisle (Rev. Hilderic Friend). March—May. (Fig. 181.) As usual, only spermogones and teleutospores are present on these specimens. Fischer records that he found the fungus on 0. umbellatum in .March and April in great plenty, with spermogones and teleutospores, but no secidia ; the infested parts of the leaves were swollen, compact, and harder than the healthy portions. He suggests (Centralbl. f. Bakt. 2. xv. 230) with great
. The British rust fungi (Uredinales) their biology and classification. Rust fungi -- Great Britain. ON LILIACE.*: 235 On Ornithogalum umbellatum. Rare; Lytham and near Carlisle (Rev. Hilderic Friend). March—May. (Fig. 181.) As usual, only spermogones and teleutospores are present on these specimens. Fischer records that he found the fungus on 0. umbellatum in .March and April in great plenty, with spermogones and teleutospores, but no secidia ; the infested parts of the leaves were swollen, compact, and harder than the healthy portions. He suggests (Centralbl. f. Bakt. 2. xv. 230) with great probability that the recidia with spermogones which are also found on Ornithogalum (JEcidhom omithogaleum Bubak, Annal. Myc. iii. 222) belong to some heteroecious species. The fungus on 0. umbellatum is a biologic race ; it does not attack 0. nutans, much less other allied species of Liliacere, such as Muscari and Hyacinthus, although P. Lilia- rearuiK is recorded on them. Fischer adds that the mycelium is not perennial, but infection takes place afresh each spring by the basidiospores of the overwintered teleutospores, from leaves lying on the ground. Distribution : Central Europe. Cooke, Handb. p. 528 ; Micr. Micr. Fung. p. 212. 104. Puccinia Porri Wint. Credo Porri Sow. Engl. Fl. pi. 411. U. Alliorum DC. Flor. fr. vi. 82 Fung. p. 217 Uromyces Alliorum DC. ; Cooke, Handb. p. 518 Plowr. Ured. p. 137 Puccinia Porri Wint. Pilze, p. 200. Plowr. Ured. p. 148. Sacc. Syll. vii. 605. Sydow, Monogr. i. 610. Fischer, Ured. Schweiz, p. 80, f. 61. Uredospores. Sori amphigenous, on indeterminate pallid spots, scattered or more or less in rows, minute, at first covered by the swollen epidermis, yellowish or reddish-yellow; spores globose to ellipsoid, very delicately echinulate, yellowish, 20—30 fi. Teleutospores. Sori amphigenous or caulicolous, generally without spots, scattered, minute, oblong or roundish, about 1 mm. wide, but sometimes confluent into larger patches,
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