234 ASCOMYCETKS. 



mouth pine. According to the observations of liostrup in 

 Denmark, and myself in various localities of Germany, this 

 is a dangerous parasite on Pinus Strohus. 

 It kills the needles and young shoots, 

 and may devastate whole tracts of forest. 

 The diseased needles become brown in 

 summer, and fall off during next winter. 

 On them are produced apothecia containing 

 club-shaped asci and paraphyses with button- 

 shaped ends. The eight spores of each ascus 

 are at first unicellular, later apparently bi- 

 cellular, and enclosed in a very mucilaginous 

 Fig. 118. -Leaf of ^Hca coat. The ascl havc an average length of 

 'Co".™i!\X?ofth1 120/x, the spores 20m, and when swollen 



lower surface. 1, An .^ q f ^ o n 

 entire and a dehiscing -^^ ^' 'J "A'- 



spore.= '( t^Tuw deT)" H. piiiicola Bruuch.^ forms linear apothecia 



on needles of Fimis sylvestris. 

 H. ericae Tubeuf.- In Tyrol and Northern Italy, this fungus 

 causes a disease on Erica carnca. It is common and epidemic, 

 causing death of the leaves. 



Hypodermella. 



Similar to Hyidodcrma, except that the spores are pear-shaped 

 and unicellular ; they occur four in each ascus, and are shorter 

 than it. 



Hypodermella sulcigena (Link)'' has four long, club-sha]->ed, 

 unicellular spores. Eostrup regards it as parasitic on Pinus 

 montana and P. si/lrcstris, its mycelium being found in living 

 green needles, and causing their death. 



Hyp. laricis Tubeuf.- This is a new fungus of the larch- 

 needle found by Tubeuf on the 8onnenwendstein (Bavaria) in 

 September, 1894, It was present in large quantity on larches 

 on the upper part of the mountain, and was in every way so 

 decidedly parasitic in character, that there is little doubt as to 

 its being an epidemic disease. The full-grown needles on many 

 of the foliar spurs had died oft' and turned lu'own. The 



' Brunchorst, Xo<jlc iior-fh- sl-orsyijdommf: in Ber(j< un Miis.. 1S92. 

 -V. Tubeuf, Botan. CcutraVdait, xxi., 1885, and lxi., 1895. 

 ^Rostrup, Fortmtte Unchrsoefidser, 1883. 



