CEYLON SPECIES OF AGARICUS. 151 
stem 2 inches high, 4 inch thick, white, sometimes slightly thickened below and subces- 
pitose; gills ventricose, + inch broad, white. 
A much stouter species than Agaricus cristatus, and much more fleshy, and, except 
that the gills are not sinuated behind, approaching Tricholoma. 
6. A. (COLLYBIA) SPARSIBARBIS, Berk. & Br.: esculentus; pileo carnoso fortissime 
umbonato convexo virgato-striato marginem versus floccis liberis aspero, umbone 
glabro fusco, carne alba; stipite valido subradicante, preemorso, basi marginato- 
bulboso hie illie suleato; lamellis angustioribus postice rotundato-adnexis pallidis. 
(Thwaites, Ceylon, no. 697.) 
Hab. On the ground, Peradeniya, July and August 1868. 
Pileus 53 inches across, deep brown in the centre, then paler; stem white, (including 
the bulb, half of which is buried in the soil) 4 inches high, $ inch thick halfway up. 
Gills + inch broad, rounded, behind free. | 
Evidently nearly allied to Agaricus eurhizus, Berk. Lond. Journ. Bot. 1847, p. 483 
(Gardner, no. 43), but differing in the hairy margin of the pileus and the absence of the 
long root and ring. The Himalayan 4. napipes, Berk., with its long root, is also very 
nearly related. | 
7. A. (VOLVARIA) DIPLASIUS, Berk. & Br.: pileo hemispherico subcarnoso obtusissimo 
sericeo-floccoso e volva brunnea bilobata oriundo, margine inflexo levi; stipite 
solido sursum attenuato, deorsum cum basi volvæ adnato; lamellis ventricosis pos- 
tice attenuatis remotissimis candidis. (Thwaites, Ceylon, no. 689.) 
Hab. On wood and on soil about decayed roots, Peradeniya, July 1868. 
Pileus 3 inches or more across, delicately floccose, white; volva rising from a thick 
white-lobed mycelium; stem 3 inches high, nearly an inch thick a the base, + at the 
apex, round which there is a broad free space. Spores :0003 inch long. 
- This beautiful species is clearly allied to Agaricus bombycinus. Its nearest ally, 
perhaps, is a Jersey species, collected by Mr. Michael Angelo Taylor, the characters of 
which may be given as follows :— 
A. (VOLVARIA) TAYLORI, Berk. & Br.: pileo campanulato obtuso livido ab ipso apice - 
striato-rimoso tenui e volva spadicea bilobata oriundo; stipite solido pallido sub- 
sequali; lamellis sinuatis antice latis, postice valde attenuatis roseis. 
Pileus 12 inch high and broad ; stem 23 inches high, + thick. 
. 8. A. (VOLVARIA) TERASTIUS, Berk. € Br.: pileo ex hemispheerico late campanulato L 
expanso carnoso livido leviter virgato rimosove, margine fisso e volva crassa tessellata 
oriundo; stipite sursum attenuato albo solido ; lamellis pallide carneis ventricosis 
liberis. (Thwaites, Ceylon, no. 689 bis.) 
Hab. On the ground, Peradeniya, July 1868. 
Pileus 4 inches across. Volva irregularly ruptured, extremely thick, connate, with the 
base of the stem brown, paler within, pointed at the base; the edge, when ruptured, 
broken so as to expose the white internal substance; the surface split into large sub- 
VOL. XXVII. X 
