282 
THE IjAKGER FUXGI 
KEY TO THE SPECIES. 
Peiiilium of two distinot layers, spores obovate . . . . 444. Ehisopogon Clelandi. 
Peridium of a single layer; spores elliptical. 
G-leba strongly gelatinized and indurated . . . . 445. E. luteolus. 
Gleba fleshy, tirni, thougli soft 446. E. nthesoens. 
444. Rhizopogon Clelandi Cunn. (Named after the finiler of the type) .—Plants 
subglobose, to llin. (.’1.5 cm.) diameter, pallid cream colour, drying' lemon yellow 
or tawny broun. Peridium of two layers, the outer of partly gelatinized liyphae 
and peeling away in shreds, exposing the inner portion which likewise is of 
partly gelatinized hyphae but more firmly compacted, 400 to 800 g. thick. Fibrils 
few, adnate, absent aboye, rluzoiddike below, sometimes wanting. Gleba cream- 
coloured, becoming tawny, fleshy, not at all indurated; cells subglobose, empty 
of spores; tramal plates 70 to 100 fi thick, scissile, of woven hyphae, not at all 
gelatinized. Spores hyaline, obovate or less commonly subglobose, shortly 
pedicellate, smooth, 7 to 8.5 x 4.5 to (i p (rarely to 10 g long). Basidia per- 
sistent, 2 to 4-spored. Half buried in the ground. — Cunningham. South 
Australia — Second Valley Forest Reserve. June. 
445. Rhizopogon luteolus Fi-. et Nordh. (L., luteolus, yellowish) .—Plants 
subglobose, oblong or tuberiform, to IJin. (I! cm.) diameter, bay brown or tawny 
brown, often distinctly yellowish. Fibrils well developed, dark-brown or black, 
appressed, rhizoid-like basally. Peridium of strongly gelatinized woven hyphae’ 
25(1 to .350 « thick, ochraceous or tarvny in section. Gleba firm ami indurated, 
at first white, becoming yellowish-brown, finally almost black in areas; cavities 
labyrinthiform, filled with spores; tramal plates 70 to 90 g thick, (strongly 
scissile, of gelatinized hyphae. Spores tinted yellow, elliptical or occasionally 
irregular, (i to 9 x 2.8 to 3.5 /j., sometimes shortly pedicellate. Basidia subclavate, 
bearing d to 8 spores. Growing partly buried in sandy soils under pines. — 
Cunningham. South xAustralia — Mount Lofty, Kuitpo, Ka'langadoo. New South 
Wales. Tasmania. New Zealand. Europe. Asia. Africa. North America. 
April to June, August. 
44(i. Rhizopogon rubescens Tub (T,., nihescens, turning red). — Plants 
gregarious, sometimes caespitose, irregularly globose or tuborifonm, ,to 24in. 
(6 cm.) diameter, at first white, then lemon yellow, drying bay brown or ferni- 
ginous brown, often with a reddish tint, and tinted re<l where bruised or cut. 
Fibrils usually scanty above, more prominent below, though not infrequently 
almost wanting, appressed, dark-brown or black. Peridium of a single laye'if 
of loosely woven but firm liyphae, 150 to 300 thick, tawnv or yellowish brown 
in section, mixeil with numerous amorphous globules of orange pigment. Gleba 
from tawny to dark ferruginous brown, firm but soft and readily cut, cells 
subglobose, empty of spores; tramal plates 35 to 60 p. thick, rarely more, slightly 
scissile, of loosely woven hyphae not at all gelatinized. Spores smooth, tinted, 
elongate elliptical, ends rounded, (i to 9 x 2.8 to 3.5 /r. Basidia cylindrical, 6 to 
8-spored. Growing on the surface or partially buried in debris on the ground 
under Pimifi species. — Cunningham. South Australia — Millbrook, Willunga Hill 
(no pines near). Mount Lofty. New South Wales. Tasmania. Western Aus- 
tralia. New Zealand. Europe. Asia. Africa. North and South jAmerica. 
May to July, October, December. 
MEL ANOG ASTER Cord a. 
(G'r., melan, black; gasier, the belly.) 
Plants subglobose or irregularly tuberiform, with branched fibrils arising from 
the exterior of the peridium, more numerous basally, hypogaean. Peridium of a 
single tough layer of woven gelatinized hyphae, (vontinuous with the tramal plates. 
Gleba consisting of tramal plates anastomosed to form numerous polygonal or 
subglobose cavities, which, are usually larger towards the centre and at maturity 
filled with spores; hymenium of elavato 2 to 8-spored basidia (commonlv 2 to 
4) which are not arranged in a definite jialisadc but irregularly distributed 
through a broad hyphal zone lining the cavities. Spores borne on short 
sterigmata, elliptical or lemon-shaped, deeply coloured, smooth, shortly pedicellate. 
— Cunningham. 
