38 A SYNOPSIS OF THE BRITISH ACIDIACEI. 
yellow, brown on opposite side; peridia somewhat circinating, in sub- 
rotund heaps; sporidia brown.— Cooke, l. c. 4. 1431 ; DC. Fl. Fr. vie 
94; Berk. Outil. p. 331; Eng. Fl.v. pt. 2. p. 472.—On Silene in- 
Jlata. Not common. Some of the peridia are short and open, others 
26. Aieidium Orobi, DC. (Bitter Vetch ZEcidium); spots yellow, 
effused; peridia scattered and disposed in small heaps; sporidia at 
length white.—Cooke, l. c. n. 1432 ; DC. Fl. Fr. vi. p. 95; Berk. Outl. 
p. 991; Eng. Fl. v. pt. 2. p. 913.—0On stems and leaves of Orobus 
tuberosus. Scotland. 
y: Subimmerse. 
27. ZEcidium Compositarum, Mart. (Composite /Ecidium) ; spots 
purplish, subrotund, confluent above; peridia crowded, in orbicular 
patches, or circinating on the under surface; sporidia orange, oval.— 
Cooke, l.c. n. 1433; Mart. Erl: p. 8145 Berk, Outl. p. 391 ; Eng. Fl. 
vy. pt. 2. p. 370. 
Var. a. Taraxaci, Grev. ; clusters small, scattered.— FI. Ed. p. 444 ; 
Johnst. Fl. Berw: p. 205.—On leaves of the Dandelion. June to J uly. 
Var. 6. Prenanthis, Pers. ; spots circular or irregular, purplish ; subi- 
culum incrassated.— Pers. Syn. p. 208; Grev. Fl. Ed. p.445 5. Johnst. 
Fi. Berw. p. 206.—On leaves of Hawkweed (Hieracium paludosum). 
Summer. - AMO TE 
Var. c. Tussilaginis, Pers. ; clusters round on a thickened base ; pe- 
ridia eireinating.— Pers. Syn. p. 209; Sow. t. 397. f. As Grev. FI. 
Lid. p. 445; Johust. Fl. Berw.; Graps Nat. Arr. p.537. Adi Pe- 
tasitidis, Gray's Nat. Arr. p. 536. Lycoperdon epiphyllum, Linn. Sp. 
Pl. 1655 ; With. iv. p. 456; Hulls Brit. Fl. p. 415.— On the under 
surface of leaves of Coltsfoot and Butterbur. «Common, Autumn. 
| Var. d. Jacobee, Grev.; pustular, soon becoming agglomerated, 
numerous, depressed ; peridia splitting into short, brittle; yellowish- - 
white teeth.— Grev: Fl. Ed; p. 4445 E Senecionis, Desm. n. 011; 
Æ. Sonchi, Johnst. Fl. Berw. p. 206.—On leaves of Senetio Jucobea 
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 scat-: 
tered, not prominent, teeth numerous, minute, reflexed ; sporidia yel- 
low, oval.—Purt, mss.—On both surfaces of the leaves of D 
apsana 
communis. April. Not common. (Tab. XIV. f; 21) 
