On the Biology of Poronia punctata (L.). 
BY 
MARIA DAWSON, B.Sc. (London and Wales), 
1851 Exhibition Science Research Scholar. 
With Plates XIV and XV. 
HE genus Poronia was founded by Willdenow 1 in 1787, 
JL and up to 1882 it is given by Saccardo 2 as containing 
seven species. In Lindau’s 3 classification eleven species are 
described. 
The species here concerned was first described by Linnaeus. 
Up to the present time but few investigators appear to 
have devoted their attention to Poronia. With the exception 
of a brief description of the external features of Poronia 
punctata , with excellent figures of the stromata, asci, and 
spores by Tulasne 4 , and a similar description, with an account 
of the cultivation of its spores and conidia-bearing stromata 
by Brefeld 5 , a mere passing reference is made to this Fungus 
in various contributions to our knowledge of the Ascomycetes. 
1 Willdenow, Flor. Berol. Prodr., p. 400. 
2 Saccardo, Sylloge Fung., vol. i, p. 348. 
3 See Engler and Prantl, Pflanzenfamilien, vol. i, Abt. i, p. 490. 
4 Tulasne, Carpologia, ii, p. 27, tab. III. 
5 Brefeld, Untersuch. a. d. Gesammtgebiet d. Mykologie, Heft x, p. 261. 
[Annals of Botany, Vol. XIV. No. LIV. June, 1900.] 
