— 250 — 



and it is probable that the peculiar appendix is a sort of floating 

 apparatus. 



Stagonospora aquatica Sacc. 

 This fungus, in litterature known to grow upon Scirpus triqueter- 

 stems (France), was found by us in the heath at Borris upon stems of 

 Scirpus caespitosus. 



Hyphomycetes. 



Chalara Ginkgonis n. sp. 



Hyphis sterilibus repentibus vel nullis, fertilibus 

 stricte erectis, unicellularibus vel cellula basali mi- 

 nima, e basi ampullacea leniter attenuatis, cylindricis, 

 [J y long. 50 — 62 fi, crass, basi c. 9 ju, apice 2 — 3 1 k ^, 



fuscis. (Rarius forma vix tumida, 2 — 6-locularis 

 occurrit). Gonidiis intra tubulos formatis, ex apice 

 deinceps exsilientibus, (catenulatis non visis), cylin- 

 dricis, utrinque truncatis, 5 — 7 x /2 ti X 2 — 2V2 p, 

 hyalinis. 



Ad folia dejecta Ginkgonis bilobae in horto 

 botanico Hafniensi. 



Fig. 7. Chalara 

 Ginkgonis. 



A and B. Conidiophores: 

 B shows a spore being 



ejaculated. 

 C. Spore. 



(A, B, G: highly magnified, 

 circ. 7(X, /i.) 



Heterosporium Fraxini n. sp. 



Gaespitulis nigris, congregatis; hyphis incre- 

 mento sympodiali flexuosis, sparsim ramosis, brun- 

 neolis, basi stromatico. Gonidiis acro- 

 genis, cylindricis, utrinque rotundatis, 

 (aseptatis vel) 1 — 3 septatis, griseolis, ple- 

 rumque circ. 17 x 5 — 6 ju, maximis circ. 

 25 x 7 — 10 fji, muriculatis. 



Ad fructus nondum dejectos Fraxini 

 excelsioris prope Vaerloese Selandiae. 



The caespitula generally break forth 

 through the epidermis, more seldom through 

 the stomata. In the season in question (De- 

 cember) the conidia-formation was lively,, 

 and the conidia formed germinated as 

 well fructificatively (Alternaria) as vege- 

 tatively. 



There appeared to be a slight inclination to formation of septa. 

 The fungus grew in company with a Macrosporium and Phoma 

 samararum Desm. 



Fig. 8. Heterosporium Fraxini. 



A. Conidiophores. 



B, Spores. 



(higly magnified.) 



