ErysipJie.-] ruNGi. 325 



1. L. LonicercB^ Kunze, {Honey -suclile Lasiohotrys). Kimze, 

 Myc. Heft. 2. p, 88. Grev. Sc. Crypt, Fl. t. 191. Moug. \ 

 JSest, ! 71. 860. Fi\ Syst. Myc. v. 3. p. 2SS.—Dothidea Loni- 

 cerce, Fr. Syst. Myc, v. 2. p. 557. — Xylo7na Lonicerce, Ft. Obs. 

 1. t.A.f.7. 



On various living species o^ Lonicera. Not uncommon in Scotland. 

 — Isle of Wight, Rev. 31. J. Berkeley. — Epiphyilous or cauline. — VVitli 

 or without a yellow spot, at first covered by the epidermis. I can per- 

 ceive no sjjorangium, but the whole fleshy mass is interspersed with 

 subglobose sporidia. There are frequently abortive peridia which may 

 easily be taken for sporangia. The structure, as described by Kunze, 

 wants confirmation, and it is desirable that it should be examined 

 in an advanced stage of growth on fading or fallen leaves. 



103. Erysipiie. Hcdw.Jil^Dec, JNlildew. Erysiplie. i 

 Peridiwn^G^hy, opening- at the collapsini^ apex, subgelatinous 

 within. Sporidia included in one or more peridiola, often con- 

 tRmwgsporidiola. Thalhts floccose, effused, free.— Name, £ci;T/,S/j, 

 mildew. ^ 



* Thallus effused, without any tldcler supporting fiocci, 

 ^ 1. E.pcinnosa, Schlecht. {Rose Mildeiv); flocci at length pul- 

 vinate M-hite, peridia sessile very minute globose witli a solitary 

 poridiolnm. Lh. in Willd. Sp. PI. v. 6. F. I. p. 104. Fr. Sysf. 

 Myc. V. 3. p. 236. — Eurotiu7n Rosarum, Grev.! Sc. Cryr)t.Fl.t. 

 164./ 2. Baxt ! Ox. n, 92. Fr. Syst. Myc. v. 3. p. 232. 

 _ On the leaves, &c., of various species of Rose. Common in some 

 situations. — Easily known by its shining clothy aspect, very different 

 from the general habit of the genus, there is, however, considerable 

 doubt as to whether it be a iiii^Erysiphe or an Eurotium ; Link and 

 especially Wallrolh describing it as an Erysiphe with a gelatinous, 

 white peridiolum, containing 6—8 small .sphieroid sporidia ; Greviile 

 ns an Eurotium, containing numerous, minute, globular sporidia, which 

 accords, as Fries remarks, with the dry plant, and which 1 find to be 

 the structure in authentic specimens. " The point can onlv be settled 

 by a very careful examination of fresh individuals in difterent stages of 

 growth, for \\hich at present I have no opportunit}-. 



** Thallus effuse, jJeridia supported hyflocci. 



a. peridiolum single. 



2. E. 77iaciddris, Wallr. {Hop Mildetv) ; flocci effused uhite 

 Avoven together into snbdeterminate spots, fulcra crisped bent 

 upwards, peridiolum solitary. Fr. Syst. Myc. v. 3. p. 237. 

 Kl. ! Fung. Germ, exs. n. 63. — u. Humuli. Lk. I. c. p. 101. 



On the leaves of hops and other rongh-leavcd plants. iMost abun- 

 dant on hops and often extremely injurious. — The upper side of the 

 leaf has a farinaceous appearance and is generally, but not always, barren. 



b. peridiola many, 



3, E. cojit/nunis, Schlecht. {co7n77wn Erisyplic) ; llocci effused 



