Rhytisma.] FUNGI. 289 



Mt/c. V. 2. p, 560. Corda in St. Deulsch, FL t. 3. t. 13. 3Ioug, 

 ^ Nest. I n. 982,^Sph. reticulata. Bee. FL Fr, 2. p. 138. 

 — Asteroma Pohjgonati^ Dec, Mem. Mus. v. 2. p. 336. t, 4./. 5. 

 On decaying leaves of Convallaria maialis. King's Cliffe, Nortiis. 

 Rev. M. J. Berkelei/. — On the continent it is usually found on Con- 

 vallaria Polygonal am, accompanied by Sph. cruenta : I believe they 

 are also associated in my specimens ; but as the leaves werecjuite dry, 

 I could not satisfy myself on this point. 



2. A. Ulmij Klotzscli, {Elm-leaf Asteroma) ; fibrillin very 

 delicate much brauclied radiating subdichotomoas flexuous 

 seated on a brownish spot. Kl. in Hook. Herb. 



On Elm leaves. Scotland. Khtzsc/i.—'nus is extremely dilfere:it 

 from the plant published under the same name by Eh*. Greville and is a 

 tn\e Asteroma. A species scarcely distinguishable occurs on Apples ; 

 this is, I suppose, A. Pijrl, Grev. in Loud. Ilort. Brit. In the same 

 place a species is* recorded by the name of A. Fraxini, Grev. This 

 is most probably the i)Iant of De CandoUc : I have not seen specimens, 

 and no specific characters have been published. 



3. A. Pnmellcc, Purt. {Prunella Asteroma); epiphyllons, 

 fibrilUe pitch-black straight radiating in fascicles from a central 

 tubercle, cells very minute subcentral. Ba.xt. ! Ox. n, 79. 

 Purt. ! 3ISS. 



On green leaves o^ Prunella viihjaris.— h. most distinct and curious 

 species, resembling Asteroma Pligtenmce, Dec. It has the appearanca 

 of a minute Hutchinsia, spread out upon the leaf, with its knob-like root 

 in the centre. 



4. A. Pcidi, Grev. {Bird-cherry Asteroma) ; radiating much 

 branched, the branches arcuate brown with a central silvery 



line. Grev. ! in Loud. Hort. Brit. p. 459 Dotltidea ? Padiy 



Bub. Syn. p. 716. 



On leaves of Prunns Padus. . Scotland. Dr. Greville. — A most 

 beautiful sj)ecies, of which I have seen but a single sj)ecimen which 

 takes its origin from the midrib on the U|)per side of a leaf, whence 

 three main subdichotomous branches of this parasite are given oil; 

 their branchlets, except towards the apices, strongly arcuate. 



Q^j. RiiVTisMA. Fr. Khytisma. 



Pcrithccinm of no regular form, bursting w ith a more or less 

 flexuous fissure into transverse fragments. Asci erect. — Name 

 ^'oTiiy a wrinkle. 



I. R.corrugdtum, Ach. (wrinlded R/u/tisma) ; minute innato- 

 supcrficial, bursting with many flexuous fissures. Fr. Syst. J/yr, 

 V. 2. ;^. 565. S'cler. Sued n. ISj.—Lccidca corrugata, Ach. 

 Syn. p. IS.^Limboria corrugata, Ach. in V. A. //. 1.S15. f. 6. 

 f. 5. {Ji'le Fr.)— Lichen grauijhrmis, E. B. t. 1464. (para.sitic 

 on Lccidea Ehrartiana mixed with some species of Calicium.) 



On the cruat of Lccidea Ehrartiana. On old baru-doors, &c. 



u 



