Pl.cell.aph. 10. SARCOTHECEZ. 236. Erysibe. 589 
I. 236. ERYSIBE. Rebentisch. Mould-bud. 
Thali globular, upon a radiated basis. 
1. Erysibe suffulta. Propped mould-bud. 
Thali: lentilshape, brown; lasts fibrous, fulcrate, ra- 
diating irregularly. 
Erysibe suffulta, Rebentisch Fl. Neomont. 
Sclerotium Erysiphe coryleum, Persoon Syn, 124,12. 
Erysiphe coryli, De Candolle Fl. Gall. 730. 
On the lower face of hazel-leaves. 
2. Erysibe alni. Alder mould-lud. 
Rays many, expanded, very long, free. 
Erysiphe alni, De Cundolle Fl. Gall. 730. * 
On the lower face of alder-leaves. 
3. Erysibe aceris. é Maple mould-lud. 
Rays many, long, interwoven into a thin membranaceous 
pellicle; ¢had/z at length collapsing and becoming concave. 
Erysiphe aceris, De Cand. Fl. Gall. 132.* 
On the lower face of maple-leaves, rarely on the upper. 
4. Erysibe polygoni. Knot-grass mould-lud. 
Rays many, long, interwoven into a membranaceous 
pellicle; thalle few. 
Erysiphe polygoni, De Cand. Fl. Gall. 733. 
On the lower face of knot-grass leaves. 
5. Erysibe populi. Poplar mould-lud. 
Rays many, interwoven into a slight crustlike pellicle. 
Erysiphe populi, De Cand. Fl, Gall. 733.* 
On the upper face of black poplar-leaves, rarely on the 
lower. 
6. Erysile pist. Pea mould-lud. 
Rays numerous, very long, very slender, sometimes in- 
terwoven into an irregular pellicule. 
Erysiphe pisi, De Cand. Fl. Gall, 734. 
On the leaves of peas. 
7. Erysibe convolvuli. Bindweed mould-bud. 
Rays numerous, interwoven into a slightly membra- 
nacecus adhering pellicle; ¢hald: scattered, or in rings. 
Erysiphe conyolvuli, De Cand. Fl. Gall. 736. 
On the upper face of bindweed-leaves. 
