CYsTOl'US. 127 



observed on Capsella may be summarized here: tlie fun -us 



attacks all parts above Around, and causes enlargement of 



parenchymatous cells ; it forms only 



oonidia ; formation of chlorophyll is 



increased; the formation of interfasci- ^ 



cular cambium isdiminished or altogether 



.suppressed ; the intrafascicular cambium 



retains its activity longer; accessory 



vascular bundles make their appearance ; ,,,!'''; ; 



no differentiation of tissue takes place 



in the ovary wall, the secondary vessels remain incomplete, 



;i in 1 tin- embryo dries up. 



C. portulacae, J>. < '. On l'nr(,il<i,;i oleracea and /'. *<iti,-<i (U.S. Ani.-ii.-a). 



C. tragopogonis, Per*. 1 (( '. .-,-/*//, -/A.x,/.>{) (Britain and I'. S. Ainni.a). On 

 ('mpnsitaf, -.//. C/iiiiiiumiffii, .\<-l,;n,;t, Cirsium, Scorsonera, etc. Tin- markings 

 mi tin- spore-coat take the form of a doulik- net-work. 



C. convolvulacearum, ottli. (<'. ipomoeae-pandiuranae, l-'arl.). < >n Con- 

 <;,l,-,ihiceae. (Halst.-.!'-' -/ives tliis as one <>f tin- causes of n,t in >\v-ct (mtato 

 in America.) 



C. bliti (Biv.-Bern.). < >n species uf Amarantaceae (I". S. Amn i, -a i. 



C. lepigoni, de Bary. < >n >/ /'/" / "''"' (Hi'itain). 



Basidiophora. 



The non-septate mycelium inhabits intercellular .-pares of 

 living jilants, and is nourished by small liaustoria. The conidio- 

 phoivs i>sue in tufts from tlie stomata, and have a characteristic 

 form: they arc unbranched with club-shaped en<ls, from which 

 arise several stcri-ma-likc couidiophores with almost spherical 

 conidia. The conidia or sporau-ia are produced in lar-e number-. 

 ami on germination discliaru'e numerous /oosjiores with two 

 lateral cilia. The oosporcs are formed singly in the oogonia, and 

 ajjpear as yellowish-ln'own bodies in the interior of the plant. 



Basidiophora entospora, l;/.e ami Cornn. On AY///'/'"" cana- 

 dense, Aster, Xn/^A^//,,, etc. (I'.i-itain and I'. S. Ameiica). 



Plasmopara. 



The mycelium is richly branched and -rows intercellular. 

 nourished l, v little button-shaped liaustoria. The c 



M.i-mis, /;./. ./. -/./(/-.-/I. l,utnn. '.'.., l^'i:; 



- / /. l'jl,,,,-..i<krnnl;h.it.n, 1MI.">, p. 



