=solitaria=, Bull. 8-12 cm. soon plane, whitish or tinged rufous, warts angular, small, floccose, easily removed; g. white, broad, narrowed behind and adnexed; s. 7-10 cm. with imbricated scales below, ring torn, base swollen, rooting, volva marginate; sp. 7-12 × 5-6.
=echinocephala=, Vitt. White. P. convex then plane, shining, bristling with acute, deciduous pyramidal warts; g. adnexed; s. solid, scaly, base bulbous, rooting, ring distant; sp. 10 diam.
[=Persoonii=, Fr. P. greyish-white, margin even; g. free; s. solid, nearly equal, rooting.
[=arida=, Fr. P. soon plane, grey, margin sulcate; g. adnexed; s. subglabrous, ring distant, volva absent.
=strobiliformis=, Vitt. P. 10-20 cm. convex then expanded, white, grey, or dingy ochre, with large pyramidal, hard warts; g. free; s. floccosely scaly, bulbous, ring large, torn, volva forming concentric rings; sp. 13-14 × 8-9.
[=cariosa=, Fr. P. soft, even, umber or dark grey, with mealy patches; g. adnate; s. equal throughout; sp. 10 long.
=vaginata=, Bull. P. 6-10 cm. plane, margin striate, grey, yellow, brown, or white; g. pallid; s. 10-12 cm. narrowed upwards, minutely squamulose, volva large, margin free; sp. 10 × 7-8.
The grey form is edible, the brown form is unpalatable.
=strangulata=, Fr. P. 8-10 cm. soon plane, livid-bay or grey, with patches of the volva, margin striate; g. free, white; s. 10-14 cm. stout, thinner upwards, pale, volva breaking up and forming 2-4 ring-like ridges on the stem; sp. 9-15 × 7.
Perhaps a vigorous form of _A. vaginata_.
[=urceolata=, Viv. P. thin, hemispher. then slightly depr. umb. viscid, mouse-colour, edge striate; g. adnate, shining white; s. white, even, naked, volva urceolate.
[=friabilis=, Karst. P. exp. thin, rather viscid, greyish, edge sulcate, with broad crowded warts or scales; g. free, white, edge darker, crenulate; s. conical, everywhere floccosely scaly, white or greyish; volva broken up into fragments; sp. glob. 11-12.
Differs from _A. vaginata_ in smaller size and imperfect volva.
[=praetoria=, Paul. P. thin, campan. then exp. naked, pectinately sulcate, maroon or brownish; g. annulato-adnexed; s. ventricose, volva large, lax.
=lenticularis=, Fr. P. 7-10 cm. globose, then convex, even, naked, reddish-tan; g. free, crowded, pallid; s. 10-14 cm. subbulbous, white, ring large; sp. ----.