OF SOUT[[ AUSTRALIA. 
199 
rimosely cracking crust, rounded pale edge, more or less horizontal pore surface 
near Saccardo’s Umber (xxi.x.), orifices minute, about 7 in 1 mm., context 
radiating, Oohraceous Tawny (xv.), spores white, spherical, (i.5 fi, setae as above. 
Soutli Australia — At the base of Eucalyptus rostrata Schl. and on E. viminalis 
Labill. National Park. May, June. 
298. Fomes conchatus (Pers.) Fr. (Gr., Iwnchc, a mussell shell). — Pileus 
to Sin. (6.2 to 7.5 cm.) laterally, projecting i to lin. (1.2 to 2.5 cm.), more or 
less effuso-reflexed, extending vertically 1 to oin. (2.5 to 7.5 cm.), sometimes 
forming a ratlrer thin acute-edged bracket, sometimes mostly resupinate with a 
narrow thicker upper surface, sometimes imbricate, the hymenial aspect 
irregularly concave and often shell-shaped. Upper surface tomentose, slightly 
irregular, sometimes concentrically sulcate, Prout ’s Brown (xv.), young growing 
portions moi’e tomentose, irregularly nodular. Tawny Olive (xxix.), old portions 
becoming bare, with a hard crust tending to crack a little, becoming brownish 
black. Context sometimes rather thin, 2 to 10 mm., hard-corky, rather brittle, 
Ochraceous Tawny (xv.) to near Sudan Brown (ill.). Tubes shallow, about 
[Photo, hy S. Tee. 
Figure 42 . — Fomes rimo,sus Berk. (No. 299). On Tea-tree, 
Hallett’s Cove. Reduced slightly. 
1 mm. deep, old tube layers indistinct, usually obliciue, colour of the context or 
a little paler, orifices 4 to 5 in 1 mm., slightly irregular, dissepiments rather 
thin, near Snuff Brown (xxix.) or paler. Spores sulispherical, hyaline, 4.5 to 
5.5 y. Setae acuminate, thickened at the base, brown. South Australia — At the 
base of Eucalyptus ohliqua L’l-Ierit., Kuitpo; Willunga Hill; Mount Lofty. New 
South Wales. Perennial. (Figure 41.) 
This species resembles small forms of F. rohustus, but the pileus is thinner and 
the pore surface more or less concave. 
299. Fomes rimosus Berk. (L., rimosus, full of cracks). — Moderately large, 
lioof-shaped, laterally attached throughout its width, usually about 2in. (5 cm.) 
laterally, lin. (2.5 cm.) from before backwards and liin. (S.7 cm.) vertically 
Pileus convex, extending upwards at the attachment, zonately sulcate and bulging 
between the depressions. Drab (XLVi.) or brownish, becoming greyish-brown or 
nearly black in the oldest portion, villous near the rounded growing edge, then 
becoming smooth and ci'ustose, the crust ci'acking, often into ((uadrilateral 
segments (var. Casuarinae Clel. et Cheel), edge Buckthorn Brown (xv.). 
Hymenial surface nearly horizontal and plane, pore orifices small, about 2 to 3 in 
1 mm., equal, rounded. Cinnamon Brown (xv.) to Snuff Brown (xxix.), Dresden 
Brown (xv. ) in a glancing light. Context thick, firm, radiating from the attach- 
