=firmus=, Fr. P. 6-7 cm. exp. obtuse, glabrous, rusty ochre, flesh compact, white; g. crowded; s. 6-8 cm. solid, stout, rather bulbous, white, veil rusty; sp. ----.

Differs from _C. subferrugineus_ by clear colour of p. and white s.

=subferrugineus=, Fr. P. 5-7 cm. exp. yellowish brick-red becoming rusty, subhygr.; g. scarcely crowded, broad, opaque, rusty; s. 6-8 cm.

solid, spongy, rigid outside, subbulbous, white then dingy; sp. 8-10 5-6.

=armeniacus=, Fr. P. 4-9 cm. exp. gibbous, glabrous, tawny cinnamon (yellowish tan), shining; g. adnate, crowded; s. 5-7 cm. conical, rigid, subperonate, white; sp. 8-9 5.

var. _falsarius_, Fr. P. yellow, white when dry.

[=umbilicatus=, Karst. P. convexo-plane, minutely umbil. undulate, obtuse, even, glabrous, brown-bay; g. very broad, cinnamon; s. equal, base thickened, whitish; sp. 6-6.5 4-4.5.

=damascenus=, Fr. P. 5-7 cm. thin, exp. bay-cinnamon (brick-red, rivulose); g. adnate, crowded; s. 5-7 cm. solid, firm, cylindrical, whitish; 12 6.

=privignus=, Fr. P. 4-5 cm. exp. gibbous, glabrous, pallid fuscous, silvery-h.o.a.ry (tan then pallid); g. adnate, serrate; s. 6-7 cm. fragile, silvery white; sp. 8 5.

=duracinus=, Fr. P. 3-6 cm. rigid, exp. gibbous, watery brick-red (tan, opaque), edge strongly incurved, silky; g. adnate, thin; s. 3-5 cm.

rigid, unequal, rooting, glabrous, white; sp. 5 3.

[=candelaris=, Fr. P. conico-campan. obtuse, glabrous, reddish dun (tawny, shining) edge slightly incurved white-silky; g. adnato-decur.; s. rigid, yellowish white, rooting.

=illuminus=, Fr. P. 3-7 cm. exp. gibbous, glabrous, tawny brick-red (brick-red, tan) edge thin; g. adnate; s. 5-9 cm. partly hollow, pallid becoming rusty; sp. 11-12 6-7.

=tortuosus=, Fr. P. 3-5 cm. exp. glabrous, even, shining, rusty bay (brick-red); g. adnate, tawny blood-red or purplish when touched; s.

somewhat twisted, silvery; sp. 15-16 8.

=dilutus=, Fr. P. 4-5 cm. exp. sub.u.mb. glabrous, even, opaque, reddish dun (tan); g. broad, crowded; s. 4-7 cm. soft, pallid, base thickened; sp. 6 4.

[=erugatus=, Weinm. P. exp. sub.u.mb. even, nearly glabrous, shining, ochraceous, brick-red; g. subadnate, crowded; s. elongated, thinner upwards, fibrillosely striate, pallid.

[=Hoeftii=, Fr. P. exp. obtuse, watery brick-red (tan, opaque), with a silky bloom; g. adnate, crowded, connected by veins; s. subfistulose, equal, silvery.

++ _Stem and gills usually violet._ In certain sp. of preceding section there is an ephemeral tinge of violet at apex of stem.

[=livor=, Fr. P. exp. obtuse, glabrous, dusky olive then tan; g.

emarginate, crowded, broad, semicircular, watery cinnamon; s. narrowed from subbulbous base, short, violet; sp. ----.

=saturninus=, Fr. P. 4-7 cm. campan. exp. glabrous, moist, dusky bay (brick-red), with white silky veil round edge; g. adnexed, crowded, purplish then rusty; s. 4-7 cm. violet, base thickened; sp. ----.

=imbutus=, Fr. P. 5-9 cm. convex, obtuse, glabrous, gilvous becoming pale, edge subfibrillose; g. adnate, rather distant, broad, greyish-violet then cinnamon; s. 4-7 cm. whitish, apex violet; sp. 7-8 4-5.

[=cypriacus=, Fr. P. almost membranaceous, campan. exp. gibbous, glabrous, cinnamon (tawny); g. crowded; s. colour of p., striate with adpr. fibrils.

[=plumbosus=, Fr. P. convex, plane, umb. moist, blackish lead-colour, then paler and with satiny sheen near edge; g. olive-violet then cinnamon; s. hollow, attenuated upwards, violet then pallid.

[=sciophyllus=, Fr. P. thin, convex, exp. deep bluish fuscous (bluish), silky-white round edge at first; g. adnate, dusky umber; s. solid, violet, narrowed from thickened base.

=castaneus=, Bull. P. 2-3 cm. campan. exp. gibbous, even, chestnut (shining); g. violet then rusty; s. 2-3 cm. cartilaginous, violet or pallid reddish, stuffed then hollow; sp. ----.

=bicolor=, Cke. P. 3-5 cm. campan. exp. umb. dingy white or tinged lilac; g. adnate, purplish violet then tan; s. 4-5 cm. pale violet then pale, solid; sp. 12-14 6-7.

=balaustinus=, Fr. P. 3-5 cm. exp. obtuse, virgate, rusty rufous (tawny brick-red, shining); g. adnate, broad rusty rufous; s. 5-7 cm. conical, pallid, then rusty outside and in; sp. 8 4-5.

=colus=, Fr. P. 2-4 cm. convex, subgibbous, glabrous, rufous brown (paler and shining); g. adnate, dusky cinnamon; s. 7-9 cm. fibrillosely striate with fiery-saffron mycelium; sp. 9 4.

=isabellinus=, Fr. P. 4-5 cm. sub.u.mb. honey-colour, glabrous (yellowish and shining); g. adnate, yellow then tan; s. 7-9 cm. rigid, striate, yellowish; sp. 10 5.

=renidens=, Fr. P. 2-5 cm. exp. even, glabrous, shining, tawny (ochre); g. crowded, tawny; s. 2-4 cm. equal and with fibrous veil, yellow; sp.

8-10 5.

=angulosus=, Fr. P. 4-7 cm. exp. wavy, hygr. reddish tawny (ochre, opaque); g. adnate, thickish, distant, tawny; s. 3-4 cm. equal, twisted, rather tawny; sp. ----.

var. _gracilescens_, Fr. S. hollow, slender, tortuous, base rather narrowed.

[=zinziberatus=, Fr. P. exp. umb. tawny honey-colour (yellowish), edge silky-fibrillose; g. adnate, quite entire, crisped; s. outside and base also inside, yellowish.

+++ _Stem fuscescent, veil pallid-dingy or white_ (_not yellow_); _gills dusky._

=uraceus=, Fr. P. 2-4 cm. campan.-convex, subgibbous, even, glabrous, umber (tan, torn into fibres); g. adnate, bay brown; s. 5-9 cm. blackish fuscous, apex becoming olive; sp. 8-9 4.

=jubarinus=, Fr. P. 2-5 cm. campan. exp. glabrous, bright tawny cinnamon (shining); g. adnate, tawny cinnamon; s. 4-5 cm. fibrillosely striate, tawny, veil fugacious, white; sp. 10 5.

Closely resembling _C. cinnamomeus_, differing in white fibrillose fugacious veil.

[=rubricosus=, Fr. P. exp. umb. brownish bay (brick-red, shining); g.

obtusely adnate, bright rusty; s. narrowed downwards, brownish, white veil collapsing and forming a silky zone.

[=nitens=, Karst. P. exp. umb. white-silky from veil then glabrous and shining, brownish bay; g. tawny cinnamon; s. subequal, fuscous, white veil forming oblique bands; sp. 6 3.5.

[=irregularis=, Fr. P. exp. umb. wavy, fuscous brown (tawny rusty, shining); g. decur. closely crowded, rusty; s. naked, brick-red with white striae.

=pateriformis=, Fr. P. 2-3 cm. plano-depr. obtuse, orbicular, chestnut brown with white deciduous fibrils; g. brick-red; s. hollow, equal, tinged fuscous; sp. ----.

[=phaeophyllus=, Karst. P. convex exp. umb. entirely even, edge silky, glabrous, watery cinnamon, ochre and shining when dry; g. adnate, brown-tan, edge honey-colour; s. equal, usually wavy, silky-fibrillose, pallid-white; sp. 7-9 4-5.

=unimodus=, Britz. P. 2-3 cm. campan. then exp. usually depr. round umbo, shining, rufous brown; g. adnexed, brown; s. 4-7 cm. fibrous, brown below; sp. 10-12 6.

** TENUIORES. _Pileus submembranaceous, conical then exp. umbo acute, rarely obtuse or nearly obsolete, edge at first straight._

+ _Stem white._

=dolabratus=, Fr. P. 4-9 cm. campan. exp. obtuse, glabrous, brick-red (even and tan), silky near the edge; g. adnate, very broad, distant, tan; s. 8-14 cm. stout, cylindrical, shining white; sp. 12-14 7-8.

Smell very disagreeable.

=rigens=, Fr. P. 3-7 cm. conical then convex, obtuse, glabrous, opaque, tan (whitish tan); g. adnato-subdecur.; s. 4-9 cm. cartilaginous, rigid, rooting, white; sp. 6-7 4.

[=fulvescens=, Fr. P. exp. shining, cinnamon (brick-red), at length fibrillose, umbo persistent rather acute; g. adnate; s. attenuated, soft, rather wavy, becoming pale.