>'EW OR NOTKwoinnv Fu>*(ii 175 



Desinazieres credits liis A. clavaUis \\\i\\ globose spores ; Peck 

 says of his A. clavellua " spores globose or widely elliptic " ; Sac- 

 cardo's spores were oval. In the Biriiiingham specimens all these 

 shaj)es of s})ores occurred ; many of them were nearly sphei'ical. 



887. Kaaiulauia Doromci, comb. nov. 



Oi'ularia Doronici Sacc. Syll. iv. 141. Trans. IJrit. Myc. Soc. 

 1912, iii. 8(38. 



8i)ots roundish or oblong, numerous, greyish ; tufts hypophyllous, 

 densely clustered, white, covering the sjjot like a white meal. Spores 

 oval, then oblong, and iinall}^ cylindi-ical, 10-15 x8-0/i. reaching at 

 last 18-19 fji long, and then (or earlier) 1-septate, acute or obtuse 

 above, occasionally in short chains, hyaline; s])oro])hores up to 50 /a 

 long, about 8 /x broad, subulate, denticulate above, irrcgulaj-, acute, 

 densely fasciculate. 



On Doronicum Pardalianchcs. In country lanes near Bi-istol 

 (Miss 1. M. Koper). Feb. 1919. Two localititi, both in Somerset. 



This species has the same history as so many other Raraularias ; 

 it is at first indistinguishable from an Ounlaria, but if some of the 

 older s])ecimens be more closely examined there will be found some 

 sjjores which are elongated and distinctly 1-septate, and finally 

 many such. It does not, of course, follow that the same rule 

 applies to all species of the genus, e. g. O. spluerioides seems to be an 

 exception. 



888. Cercosporella Oxalidis, sp. n. 



(§ Qercodesmium, conidio|)horis dense fasciculato-ramosis.) 



Maculis rotundatis, 2-5 mm. diam., fuscis, pagina aversa iialli- 

 dioribus. Cespitulis hypophyllis, dense fasciculatis, per stomata 

 emergentibus ; hyphis fertilibus erectis, ramosis, torulosis. Conidiis 

 obclavatis, a])ice acutis, basi rotundatis, 1-septatis, rarissime 2-sep- 

 tatis, multiguttulatis, 25-30 X 4-5 /k, hyalinis. (Fig. 14.) 



Hah. in foliis vivis Oxalidis Acetosellco. Bagshot Woods. Aug. 



In the fresh state, the toi'ulose hyphie ai'e seen to be much 

 l)ranched below, and the conidia which are clustered at the apex 

 of each branch are fasciculate and pressed tight into aclavate bundle ; 

 in water, they diverge. The septum is very delicate ; occasionally 

 the lower cell gives rise to another conidium laterally at its apex, bv 

 a kind of proliferation. 



889. Cladosporium AniTDis Thihn. in CEsterr. Bot. Zeitschr. 

 1877, p. 12. Sacc. Syll. iv. 369. Trans. Brit. Myc. Soc. vi. 208. 



Hyphie ascending or erect, branched, fascicled, faintly se})tatc, 

 fuscous, about 6 /^ thick. Conidia oblong-ovoid, acute at j^oth ends. 

 at length 1-septate, not constricted, paler than the hvplnc, 10- 

 20x6^. 



On various Aj^hids, Edgbaston (Mrs. Merrett-Hawkes). 



Saccardo records 2-septate conidia, but these were not seen. The 

 species has also been recoi-ded on Chermes Pini, in Gloucestershire. 

 It is suggested by some that this is only a form of the common 

 CI. herharum, but, if so, it is modified somewhat by its habitat, 

 especially in the form of the conidia. 



