J40 ^- Fkrd'nandsen. 



Omphalia Fr. 

 Omphalia umbellifera (L.) Fr. — Elench. I, p. 22. 



No. 381a (coloured drawing): Thermometerfjæld, 17—8—07; No. 1936: bog near 

 Danmarks Havn, 16—7—08 (Honey-fungus). 



As the drawing and the term "honey-fungus" indicate, the fun- 

 gus has a beautiful yellow colour in the living condition (the form 

 Ag. chrysoleucus Pers., which is common in high mountains and in 

 the Arctic). 



"Seems to be the most commonly occurring and most wide- 

 spread of the Agaricineae in Greenland" (Rostrup: Fungi Groen- 

 landiae, Medd. om Grønland III, p. 528). — Cf. also Rostrup: Øst- 

 Grønlands Svampe, Medd. om Grønland XVIII, p. 7, Duc d'Orléans: 

 Croisière océanographique etc. Botanique p. 12. — N. Hartz's note, 

 that the fungus is common on damp spots in the heath in Scoresby 

 Sound (Øst-Grønlands Svampe 1. с.) agrees well with the fact, that 

 on Danish heaths it is also chiefly bound to moist spots between 

 the Ca//una-tufts, where the author has even found it submerged. 



Omphalia umbellifera (L.) Fr. var. ad O. rusticam Fr. vergens. 



No. 360: fungi on fairly dry ground on S. E. side of the Varde-Ridge, 11 — 8 — 07; 

 chocolate-brown, the small specimen with a light spot in the middle. 



From the typical 0. umbellifera this form differs by its dark 

 colour and by somewhat narrower, more crowded lamellae; in 

 these characters it approaches to 0. rustica Fr., which species along 

 with 0. umbellifera-ïorms is united by Persoon to the species Agaricus 

 ericetonim. Both species [umbellifera and rustica) are found on Da- 

 nish heaths. 



Omphalia sp. 



No. 991: Basiskæret 20 — 6—08; in rough dried moss and as stiff as wood. 



The badly preserved condition makes a certain determination 

 impossible. 



Kussiila Fr. 



This is one of the genera in which the separation of the species 

 is often very difficult, in fact almost impossible in alcohol material 

 when the plants have not been collected and labelled by a specialist. 

 A certain amount of knowledge of the shades of colour of the spores 

 and of the taste (smell) of the flesh is in fact an indispensable con- 

 dition for the determination of the species — and of these characters 

 the first can be only with difficulty, the last impossibly recognised 

 after treatment with alcohol. The determinations given must there- 

 fore merely be regarded as approximate. 



