HELOTIUM. 153 
ARRANGEMENT OF THE SPECIES, 
A. Stipitate or substipitate. 
(a) Hag elliptic. 
(a) On wood ++ species 1 
(8) On herbaceous plants oe » 43 
(y) On catkins .. ae oe » 4 
(b) Sporidia He UAH 
(a) On wood. oe » oll 
(ec) Sporidia fusiform or clavate. 
(a) On wood : es » 12-14 
(8) On herbaceous stems. . ‘ ee » 15,16 
(y) On leaves and fern-fronds .. » 17-22 
(@) Sporidia linear. 
(a) On wood Ae a A » 23 
B. Sessile. 
(a) Sporidia oblong or oblong eltiptes 
(a) On wood » 24, 25 
(6) Sporidia fusiform or ‘oblong-fusiform. 
(a) On herbaceous stems or twits » 26-28 
(8) On cones : oe a » 29 
(©) Sporidia cylindrical. 
(a) On wood a6 re ae » 380 
(d) Sporidia doubtful .. ws a » 981-35 
Key To THE SPEcIEs. 
A., STIPITATE. 
Hymenium brown .. ae oe ae ree | 
Hymenium yellow .. o. o . - 2 
Hymenium white .. ase a Si 38 
Hymenium dark green Agaricinum. 
Hymenium honey-coloured; atem cylindrical, slender melleum. 
[ymenton pale umber ; stem stout.. Si +. subsessile. 
Hymenium ferruginuous; externally paler. . «+ ferrugineum. 
1. {Hymenium pale brick-red ; stem delicately villous sublateritium. 
Hymenium testaceous or ochery pallid stem equal, 
paler .. ais salicellum. 
Hymenium pale yellowish-brown : on Marchantia Marchantiz. 
Hymenium bright yellow; externally pallid +. flavum. 
Hymenium lemon-yellow; externally the same 
colour citrinum. 
Hymenium pale Yellow; externally pallid : on dead 
leaves ‘5 sulphuratum. 
Hymenium pale yellow: margin paler: on dead wood pallescens. 
Hymenium pale yellow; margin repand: on Spirea repandum. 
Hymenium pale yellow; margin acute, repand : on 
leaves immutabile. 
Hymenium yellow, dark brown beneath ; stem stout jibuliforme. 
Hymenium yellow; margin even, orbicular; stem 
papilliform .. lenticulare. 
Hymenium pallid-ochraceous; ‘stem nearly ‘obsolete: 
on grass : oe ++ graminium. 
Hymenium pallid-ochraceous : “on leaves an «.  epiphyllum. 
\Hymenium egg-yellow ; margin paler, repand .. ilicis. 
