ADDENDA.
[The following species have been added to the British Flora since the publication of the Appendix.]
Æcidium Parnassiæ, Grav. Parnassia Cluster-cups; hypophyllous; spots pallid; peridia in subrotund patches, irregularly disposed, tawny-yellow, between urceolate and concave; the margin thick and nearly entire; spores pallid. Duby. Bot. Gall. ii. p. 904.—On leaves of Parnassia palustris, near Glasgow. (Dr. Greville.) The original specimen is in the Edinburgh Herbarium.
Æcidium Statices, Desm. Sea-Lavender Cluster-cups; hypophyllous; spots subrotund, or confluent and irregular, purple; peridia in subrotund circinating clusters, sometimes irregularly disposed on the nerves and petioles; urceolate; margin lacerated, white; spores orange. Desm. Exs. No. 132. Cooke, Exs. No. 444.—On leaves and petioles of Statices. June, July. Fleetwood, 1859 (Rev. A. Bloxam). Walney Island, Lancashire, 1871 (C. Bailey). Near Basingstoke, 1871 (R. S. Hill). Near Chichester, 1872 (F. V. Paxton).
Chætomium funicolum, Cooke. Twine Bristle-mould; perithecia scattered, sub-ovate, black; hairs of the vertex very long, dichotomous or simple, erect, slender, acute, black; sporidia lemon-shaped, dingy brown.—On twine suspended in a vessel containing water at the British Museum. (W. Carruthers, F.R.S.) March, 1872. This species is most closely allied to C. elatum, but much smaller and neater. It is wholly black, and without the fibrous base of C. elatum. The hairs are more delicate, not having half the diameter, and the sporidia are scarcely more than half as long or broad. A species of Polyactis afterwards made its appearance on the same mycelium on some portion of the twine left behind with a few immature perithecia.