198 MICROSCOPIC FUNGI. 



Var. a. Taraxaci, Grev.; clusters small, scattered.— On leaves 

 of the Dandelion. June to July. 



Var. b. Prenant/iis, Pers.; spots circular or irregular, purplish; 

 subiculum incrassated. — On leaves of Hawkweed (Hieracium 

 paludosum). Summer. 



Var. c. Tussilaginis, Pers.; clusters round, on a thickened base; 

 peridia circinating. — On the under surface of leaves of Coltsfoot 

 and Butterbur. Common. Autumn. 



Var. d. Jacobeece, Grev.; pustular, soon becoming agglomerated, 

 numerous, depressed ; peridia splitting into short, brittle, yellow- 

 ish-white teeth.— On leaves of Senecio Jacobcea and Sonchus 

 arve/>sis. 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, 

 retiexed ; spores yellow, oval.— On both surfaces of the leaves 

 of L'ip&ana communis. April. Not uncommon. Said to be a 

 condition of Puccinia Lapsancc and other species. 



JEcidium Saniculae, Carm. Sanicle Cluster-Cups ; 

 spots purplish, slightly incrassated, small, scattered, roundish; 

 peridia in small circinate 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 

 Europ&a. Not uncommon. May and June. Said to be a con- 

 dition of Puccinia Sanicula. 



JEcidium Violse, 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. Said to be a condition 

 of Puccinia violarum. 



JEcidium 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 jellowish, oval.— On the under surface of the 

 leaflets and on the petioles of Poterium Sanguisorba. Kare. May 

 and June. Dartford Brent, Kent. 



JEcidium Parnassise, Grav. Parnassia Cluster-Cups; 

 hypopbyllous; spots pallid; peridia in subrotund patches, irregu- 

 larly disposed, tawny-yellow, between urceolate and concave ; the 

 margin thick and nearly entire ; spores pallid. Duby. Bot. Gall, 



