FUNGI OF ICELAND 493 
centrally. — Asci cylindrical, short-stalked, 80-100 X 6—7 u, 8-spored. 
Spores parallel, needle-shaped, 50X1—2 u, provided — sometimes at both 
ends, but more often only at one end — with a 20—30 u long, straight 
or curved appendage, 0.5—1 4 broad, in some few spores 2 or 3 such 
appendages at the same end. 
Distinguished by the appendages of the spores. 
Valsaceae. 
Valsa (Scopoli) Fries. 
238. V. betulina Nitschke, Pyrenomycetes germanici, p. 219. 
Fornhagagil [O.D.], Holm in Selsundslekur (Feddersen). — On dead 
branches of Betula pubescens. 
239. V. polyspora Nitschke, Pyrenom. germ., 
p. 238. 
Vifilsstadahlid [P. L.]. — On dead branches 
of Betula pubescens. 
Diaporthe Nitschke. 
240. D. salicella(Fries) Saccardo, Syll. fung. I, 
p. 622. 
Sphaeria salicella Fries, Syst. Myc., vol. II, 
p. 377. 
Sluttnes in Myvatn [P.L.. — On dead 
branches of Salix phylicifolia. 
241. D. aristata (Fries) Karsten, Mycologia Fig. 3. 
Fennica II, p. 112. Linospora caudata n. sp. 
: : 2 JER L a. 2 spores X 500. 
Sphaeria aristata Fries, Syst. Myc, II, p. 363. hs Aron weil DALE SEE 
Hälsskögur and Hof [O. D.], Hallormstadir, 
Norötünga and Pingvellir [P.L.]. — On living and dead branches of Be- 
tula nana and Betula pubescens — a facultative parasite. 
242. D. muralis Spegazzini, Michelia I, p. 458. Saccardo, Syll. fung. I, 
p- 655. 
Asarnir in Galmarströnd [0.D.). — On dead stems of Sedum 
villosum. 
Fenestella Tulasne. 
243. F. princeps Tulasne, Selecta fungorum carpologia II, p. 207. 
Fornhagagil [O.D.). — On dead branches of Salix lanata. 
244. F. tumida (Persoon) Saccardo, Syll. fung. II, p. 329. 
Sphaeria tumida Persoon, Synopsis methodica fungorum, p. 41. 
Hälsskögur [O.D.). — On dead branches of Betula pubescens, 
