Rust, Smut, Mildew, & Mould: An Introduction to the Study of Microscopic FungiCooke, M. C. (Mordecai Cubitt)
Science
Rust, Smut, Mildew, & Mould: An Introduction to the Study of Microscopic Fungi
Cooke, M. C. (Mordecai Cubitt)
Phytopathogenic fungi -- Great Britain
Var. _d._ _Jacobæa_, Grev.; pustular, soon becoming agglomerated,
numerous, depressed; peridia splitting into short, brittle,
yellowish-white teeth.—On leaves of _Senecio Jacobæa_ and _Sonchus
arvensis_. June to August.
Var. _e._ _Lapsani_, Purt.; spots purplish, irregular, confluent, on
both sides of the leaves; peridia amphigenous, in irregular patches or
scattered, not prominent, teeth numerous, minute, reflexed; spores
yellow, oval.—On both surfaces of the leaves of _Lapsana communis_.
April. Not uncommon.
=Æcidium Saniculæ=, Carm. SANICLE CLUSTER-CUPS; spots purplish, slightly
incrassated, small, scattered, roundish; peridia in small circulate
clusters, hypogenous, and on the petioles, at first hemispherical, at
length open, margin with from 4 to 6 spreading lobes; spores yellowish,
elliptical.—On the under surface of the leaves and on the petioles of
_Sanicula Europæa_. Not uncommon. May and June.
=Æcidium Violæ=, Schum. _Violet Cluster-Cups_; spots yellowish; peridia
in irregular heaps, seriate and scattered; spores orange, at length
brown.—On leaves, petioles, and sepals of Violets. Common. May and June.
=Æcidium Poterii=, Cooke. BURNET CLUSTER-CUPS; spots obliterated,
clusters subrotund or elongated; peridia hypogenous and on the petioles,
circinating or scattered, immersed, margin irregularly fringed with
numerous minute teeth, soon falling away; spores yellowish, oval.—On the
under surface of the leaflets and on the petioles of _Poterium
Sanguisorba_. Rare. May and June. Dartford Brent, Kent.
=Æcidium Geranii=, DC. CRANESBILL CLUSTER-CUPS; spots yellow and purple;
peridia in circinating clusters; spores yellow, at length brown.—On the
under surface of leaves of _Geranium pratense_ and _G. dissectum_. Not
common.
=Æcidium Menthæ=, DC. MINT CLUSTER-CUPS; spots obliterated; subiculum
thickened; peridia scattered, emersed, or aggregate immersed; spores
orange, elliptic.—On various Mints. Common.
=Æcidium Scrophulariæ=, DC. FIGWORT CLUSTER-CUPS; spots yellowish;
peridia in roundish circinate clusters (rarely scattered) on the under
surface; spores whitish, becoming tawny.—On the leaves of _Scrophularia
aquatica_. Thame and Sydenham, Oxon.
=Æcidium Pedicularis=, Lobosch. RED-RATTLE CLUSTER-CUPS; spots
obliterated, subiculum thickened; peridia thickly and irregularly
clustered, subimmersed; spores dirty, pallid orange.—On petioles,
leaves, and stems of _Pedicularis palustris_. Not common.
=Æcidium Primulæ=, DC. PRIMROSE CLUSTER-CUPS; spots obliterated; peridia
solitary, scattered, and crowded, hypogenous; spores whitish-yellow.—On
the under surface of leaves of Primroses. Not common. May.
=Æcidium rubellum=, Pers. DOCK CLUSTER-CUPS; spots purple; peridia
circinating, centre free; spores yellowish-white.—On leaves of Dock and
Sorrel. Not uncommon in moist localities. May and June.
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