Rust, Smut, Mildew, & Mould: An Introduction to the Study of Microscopic Fungi

by M. C. Cooke

Lecythea epitea, Lév. Tawny Willow Rust; sori roundish, scattered, at first tawny, at length growing pale, surrounded by the ruptured epidermis; spores subrotund and pyriform.—On the under surface of Willow-leaves.

Lecythea mixta, Lév. Orange Willow Rust; spots yellow; sori subrotund, aggregate, confluent, effuse, permanently surrounded by the ruptured epidermis; spores oblong and pyriform, orange.—On both surfaces of the leaves of Willows.

Lecythea Saliceti, Lév. Common Willow Rust; spots yellowish; sori subrotund, solitary, or in circles, surrounded by the ruptured epidermis; barren spores subglobose and pedicellate or pyriform; fertile spores subglobose, orange.—On the under surface of Willow-leaves. Autumn. Common.

Lecythea Baryi, Berk. De Bary’s Rust; sori few; cystidia with an abrupt globose head; spores subglobose.—On leaves of Brachypodium pennatum. Very rare.

Lecythea Valerianæ, Berk. Valerian Rust; spots yellowish; sori subrotund, small, confluent, sometimes circinating; epidermis at length bursting; spores reddish-brown, subglobose or clavate, shortly pedicellate.—On Valeriana officinalis. August.

* * Spores invested.

Lecythea gyrosa, Berk. Ringed Rust; spots obliterated; sori minute, confluent, and forming a small distinct ring; epidermis bursting; spores globose and elongato-pyriform, yellow or pale.—On the upper surface of Raspberry and Bramble leaves, forming a more or less perfect ring with the centre unoccupied. September. ([Plate VIII.] figs. 162-164.)

* * * Spores concatenate.

Lecythea Capræarum, Berk. Sallow Rust; spots obliterated, yellow on the opposite side; sori varied in form, here and there confluent, surrounded by the ruptured epidermis; barren spores subglobose and pyriform, pedicellate; fertile spores subglobose, dirty yellow.—On the under surface of the leaves of Sallows. June to August. Very common. ([Plate VIII.] figs. 160, 161.)

Lecythea Lini, Berk. Flax Rust; spots yellowish; sori subrotund, scattered, surrounded by the ruptured epidermis; spores globose or pyriform, sometimes pedicellate.—On Linum catharticum. July. Not uncommon. ([Plate VIII.] figs. 165-167.)