I STILAGO. .">"j 





to tin- ti--ue iif i In.- I'l'li/'jiiui'in and may form -imple 

 filaments. or -evt-ral such tilaiin-nts may hecome hound to-ethei 

 hy lateral connections. Kadi strand heco] U e- .-iirrounded 1>\ 

 spores of the r's/ //////,. which art- set five mi rupture of the 

 fruit--all, while the cell-strands laterally hound in cadi other 

 are loosened IVuin the surrounding tissue as the capillitium. 



"The spores -crminate in water, prodiidn- shurt unieellular 

 promycelia and fairly lar-e coiiidia. which coalesce he-lore they 

 -ermin. The mvcclium is ci.ntined tn a small part of the 



>teui. twins. ( ir intldrcsceiices nf the hii<t-plaiit. The liypi-r- 

 triiphied pai'ts ,,{' the stein cmitain aluinrinal spmi-y wnud. 

 which easily decomposes and lirhrj- aliuiit the death ul' the 

 .ualls. almiu with parts ,.f the stem >ituated l.eyi.nd them, or 

 even the wlmle plant. Tlie normal jiroductiou of camliiuni is 

 coiiipleli-ly destroyed in the -alls. The pith and primary rind. 

 however, remain uninfluenced. The camhium produces. l>oth 

 outwards mid inwards. >uch a mass of thin-walled ]iarenchyiua 

 that the normal basl is forced a>under and disarranged. In 

 this way rupture of the sclerenchyma-layer ensueSj wherehy the 

 jirimary rind is destroyed, and the almormal tissue formed liy 

 the caml'ium emerjr- tn vit-w. h is from sudi place- thai 

 the excrescences de<crilitMl have their ori-in." 



It Will he -ecu We haVe liele the J.ai'tllers of a SymbiOSifi 



lieeniiiiu-- <n adajited to each other that the hoM-planl pi'odiices 

 a -pi.-cial tissue tor the distribution of the spores. Tin- 



further than nmst of those already mentioned in ?' 5; 

 Init the hushes produced 1,\ Cacoma <l,j'<>riiiini^ for the fnrmatiou 

 of it- spores are a-ain a di-tinci advance <>\\ the " fruit --alls " 

 of this UstUago. 



Cintractia. 



Spore-masses developed in-ide a -Imma and pa-sin^ mituanU 

 that the mature Mack spores Ij,- freely d. 



MagllUS 1 li;i- i i-i-i-iil l_\ - p.o :iti-i| /'.</," I'.-i-. ami / 



l\ i ii., and | d. -i ' -i -i I tl it-ii i iiinli-i- 1 hi- 'j<-nu-, because th.-ii sp e dr\ i-in|i,-,i 



only in i In- f|iiilfi-in;i I cells of the b > .\ . 



Cintractia caricis (P ir.iii.uu and LJ.S. Ameri< The 



i mi. A i nolur., Ser. vi., Vol. xv., iss::. I 'I d. XV. 



\l ' . ii 1 1 ./.'./(. l rtin d. PTOV. B . \ \ \ \ 1 1. I \\> \> \> I, x 



II. MI . 1895. 



