j^ Dansk Botanisk Arkiv, Bd. 2, \'r. 7. 



ß. Spores verruculose or spinulose. 



a Cap striate, ding}' brownish C. erosa (27) 



b. Cap even, dark fuscous C. tcsqiwrum (28) 



SYSTEMATIC AND FLORISTIC NOTES. 



I. AR MILLAR I A. 



1. Collybia (Armillaria) mucida (Schrad.). 



Spores globular, 13 — 18 X 12 — 16 u., epispore very thick. 



Figured specimens: »Fruens Bøge«, on fallen branch of Fagus, 

 Oct. 1895. — On wounded trunks and dead branches of Fagus 

 (as well when lying on the ground as when still on the tree), 

 even high up (about 15 meter), often growing somewhat fasci- 

 culate. It sometimes appears to be a true parasite, but never 

 attacks young and vigorous trees. Found everywhere, till late in 

 the autumn. 



II. EU-COLLYBIA. 



A. LÆTICOLORES. 



a. STRIÆPEDES. 



2a. C. radicata (Reih). 



Spores ovate, 15 x 10 u. Basidia 4-spored. Cystidia inflated, 

 cylindric-sackshaped, about 20 \x broad. 



Figured specimens: Hjallese, wood of Fagus, July 1905; forma 

 arrhiza: Hjallese, July 1903. 



Common everywhere in our beechwoods, very rarely met with 

 outside. Although apparently growing on the ground it is, I 

 believe, always a true xylophilous fungus, the »root« always 

 springing from a tree-root, and varying in length according to 

 the depth in which this root is running under the surface. — On 

 superficially-running roots the fungus accordingly has no »root 

 at all, but only an alliiform swelling at the base. This form: 



forma arrhiza, I have found at Hjallese, July 1903, and in 

 Aalykkeskov near Odense, 1911. — A more distinct form is 



2 b. C. radicata var. gracilis J. E. Lange. 



Spores as in the typical form. Cystidia about 40 u long, cylindric- 

 subulate, 2— 3 ju broad, base inflated, subovate. 



Fig. specim.: Wood of Fagus, Hunderup 1897 (and 1900). 



i 



