OF SOUTH AUSTRALIA. 
47 
This is a very important genus on account of its containing several highly 
poisonous species, one of which at least, A. muscaria, has been found at Aldgate 
in this State. Its members may be recognised by the presence of both a ring 
and a vulva (which may later almost disappear) and by the spores being white. 
The gills also are usually white or whitish, but may be tinted. In some species 
their colour may be a faint pink tint, and it is perhaps due to the mistaken 
inclusion, when gathering mushrooms, of young specimens showing such a colour 
or having a general resemblance to the common mushroom that has led to the 
few fatal cases of Agaric poisoning known in Australia. 
KEY TO THE SPECIES. 
Volva sheathing, ample. Ring definite. 
Pileus whitish with a biscuity tint. Spores 
relatively narrow, 10 to 13 x 5.5 to 6 > . . . . I. Amanita anffustispora. 
I ’ileus and ring drab-coloured. Spores 10.5 to 12 x 
8 2. A. cinereo-annulosa. 
Volva rarely sheathing, usually floccose, friable or 
evanescent. 
Pileus scarlet or orange, covered with fragments of 
the volva 3. A. muscaria. 
Pileus reddish-brown or dingy reddish-brown with 
grey, white, or yellow mealy patches. Flesh 
turning reddish 4. A. rubescens. 
Pileus pinkish buff, pale fawn, biscuity or pale 
ochre. Gills becoming buff yellow. Spores 10 to 
13.5 x 6 to 7 /j- 5. A. ochrophylla. 
Pileus drab, hair brown, bistre or nearly chocolate- 
colour with often greyish or whitish fragments 
of tlie volva. Volva rarely sheathing, some- 
times nearly absent. Ring marked or evanes- 
cent. Spores 11 to 15 x 9 to 13 V . 6. A. grisca. 
Pileus white or whitish. 
Beset with prominent shaggy warts. 
Pileus whitish with a silvery sheen. Sour 
smell. Spores 8.5 to 11 x 0.8 to 9 /j. . . 7. A. grossa. 
Beset with scattered often villose warty 
patches or surface dull in places. 
Pileus whitish or slightly biscuity. No 
sour smell. With a prominent conical 
root. Spores 9 to 11 x 5.5 to 7 g. . , 8. A. conico-bulbosa. 
Surface smooth or mealy. 
Gills straw yellow. Pileus white . . . . 9 .A. straminea. 
Gills white. 
Pileus up to 5in., white with tints of 
fawn or pearly grey, mealy. Stem 
very mealy 10. A. farinacea. 
Pileus under 2in., pallid brownish to 
nearly white, mealy. Stem sub- 
mealy 11 . A. subaTbida. 
(a) Margin of volva free, persistent. Pileus generally naked. 
1. Amanita angustispora Olel. (L,, angustus, narrow). — Pileus J to 2in. 
(1.8 to 5 cm.), irregularly convex, then nearly plane or with the centre depressed, 
viscid when moist, subfibrillose round the edge, whitish with a slightly biscuity- 
brown tint in the centre, or with a pale chocolate or greyish-brown tint. Gills 
just reaching the stem to adnexed or nearly adnate, moderately closci, not 
ventrieose, edges serrate in one collection, -jin. or more (7 mm.) deep, white 
with -a slight cream tint. Stem 1* to 2jin (3.7 to 6.2 cm,), equal, moderately 
stout to moderately slender (fin. to §in., 10 to 12.5 cm. thick), mealy and gill- 
marked above the definite dependent white superior or nearly median rin«- 
slightly fibrillose below, solid, base bulbous, lin. (2.5 cm.) long, Sin. ( 1.9 enV) 
thick, rounded below or with n conical root. Volva usually sheathing, ample, 
