ANAIIAKNA. ."> I .". 



/ne generally forms a circle: in longitudinal suet inn ih.- cylinder 

 of blue-green algae does not extra,} mute uj> to the growing 

 point. According to Keinke, the alga penetrates int<> 

 newly-formed intercellular spaces of the drvrlojihm 

 cortex, and remains confined U> the zone which it has tir-t 

 excited to increased growth. It is not certain whether the 

 Nbstoc penetrate- ,,uly int.. injured place- or into natural 

 fissures. 



The branched aerial masses of tubercle- mi < '\v, id-roots an- 

 prodnrrd independently of the AW,*-, 1 l, u t their function is 

 unknown beyond a suggestion that they are r_:an- .|' n-pira- 

 tion. They certainly receive no injury 1'rom inva-i"n by the 

 Nosfor. Since the AW,,r lives completely cut oil from the outer 

 world and frequently in subterranean roots, we mu-t a-.-ume 

 that it receives nourishment from the host. 



Keinke found Anulm, n in routs of Cycas, Ceratozamia, Dioon, 



and En<;j>l,i.ilii,-ti^. 



Keinke has also found very tine fungal mycelia in the roots 

 of Cycads. Schneider observed intraeellular bacteria in root- 

 tubercles free from X*t'-. 



Anabaena azollae Strasb.- This endophyte is never absent 

 from J >//-/. neither A. caroliniana so murh cultivated in hot- 

 houses, nor the wild sjiecies found in America, Africa. A-ia. 

 and New Holland. The algal filament- are pre-mi even in 

 the neighbourhood of the vegetative point and in the clo-rd 

 indusia of the sporangia. They are, however, mo>i abundant 

 in the cavities formed in the epidcrmi- of the tlohy tlnating 

 Leaves. 8 The .!////////// filaments do not nitn the c,i\ity by 

 the ojM-ninu found in the completed structure, but find tln-ir 

 way in durin- the formation of the cavity, and pi'obal.l\ inlbiein r 



it- development. .Vs tl,r caVJtV brrolllr- tillrd \\itli AuttbcU 



>oine cell.- of its inner walls gmw out a- segmented branched 

 filaments amongst the coil- of thr ;dga, probal'l\ in Consequence 



of a -timulii- exerted by the .!//////////. 



N'o r||i|o|,|iytir Srhi/.ojlhycrar a|r KlIoWll 111 llir U'lle Illo- 

 M.H -K ins (loc. ''il.\ .-l.'itrs tliiit tin- r<>t-i "I ' . t .it tin' !'..>( mi. t..n.l.n. 



ll'-i'li-li.i i .. ae\ i . "ii! tin . I naba 



-. /'./,-. | .,,//,;, .Icin, |s7:: ; al-Mi /'. 'I i..h 



i.\ Eillhoiue, 1889 



Mi'- l'-.i\>- '.! . I .//! iin- i|ivii|i-i| lulu t\\" |i.iri~. 'In ii||n-i- ll. >li\ "i 

 liii-li ill at. s n tin- \\.a.-i, tli<- un. 1> -i iii.-iiiln.iih.N-i.il' I .. in.- submerged. 



l' \i 



