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2109. R. luteolus Fr. (from the dull yellowish colour when half-
mature ; luteolus, yellowish) abc.
Irregularly subglobose or ovate. Pe. thick, subcoriaceous, whitish
to dull yellow and olive- or nut-brown. Gleba black with
white septa.
S o lita ry or g reg a rio u s. S u b te rra n e a n o r p a r tly exposed. T a s te in s ip id ;
o d o u r a t first w e ak th e n s tro n g a n d offensive. S a n d y fir-woods, u n d e r
bee ch. S e p t.-O c t. D iam . i f in.
CXXVIII. HYMENOGASTER Vitt.
(From the usually thin peridium; Gr. humen, a membrane,
gaster, the belly.)
Globose or irregular. Peridium fleshy or thin, simple, homogeneous,
running down into a sterile base, except 2116. Cavities of
gleba at first empty, radiating from the base or irregularly scattered.
F i g . 1 4 5 .— A , B , Hyme fiogaster tetier Berk-, entire and in section. X | .
c , basidium and spores. X 660.
Trama composed of elongate cells, not of byssoid flocci, not easily
separable. Spores 1- 4. (Fig. 145.)
All the species are nearly superficial in growth, none are edible. -
Species 2110—2122
2110. H. Klotzsehii Tul. (after Johann Friedrich Klotzsch) abc.
Irregularly globose to kidney-shaped. Pe. adpressedly downy,
fibrillose at base, dull white becoming yellowish. Gl. pallid,
becoming rufous-ochre.
S an d y soil. D e c . D iam . f in .
2111. H. mutieus B. & Br. (from the absence of a base ; muticus,
curtailed, blunt) a b . , , ,
Globose, scarcely lobed. Pe. at length much cracked, white
then brownish. Gl. almost destitute of a sterile base, somewhat
firm and dry, cells loose, pale yellowish-brown.
O d o u r slig h t. N o v . D iam . § in .
2112. H. luteus Vitt. (from the yellow gleba ; luteus, yellow) abc .
Irregularly globose or ovate, sometimes deformed. Pe. very
thin, soft, silky, white to brownish. Gl. bright yellow.^
A lm o s t scentless or s lig h tly swe et, b e c om in g fetid . S e p t.-M a r . D iam . I in.
2113. H. lyeoperdineus Vitt. (from the shape, like a small puff-ball,
Lycoperdon) abc . ^ ^ ■ t,
Subglobose, somewhat deformed, varied in form, plicate at base.
Pe. smooth, white then pale whitish-salmon to brownish. ^ Gl.
soft, elastic, with somewhat large, irregular cavities, pallid to
pale fuliginous.
Greg a rio u s. O d o u r s tro n g , o n io n -lik e , u n p le a s a n t w h en d ry . I n e a rth an d
clay. N o v . D iam . i§ in .
2114. H. deeorus Bull, (decorus, seemly) abc.
Irregularly globose or oval, sometimes slightly deformed. Pe.
dull white becoming yellowish in places. Gl. hlac-brown at
length blackish.
W o o d s , tan -p its . O c t.-N o v . D iam . i f in ,
2115. H. vulgaris Tul. ex B. & Br. (from its commonness; vulgaris,
common) abc . , r n w
Subrotund,-irregular, often indented, somewhat soft. Pe. white,
becoming discoloured. Gl. with rather large irregular cavities,
dull white then dark brown.
Greg a rio u s o r subcæspitose. Lo o se soil. J u ly -O c t. D iam . f in .
2116 H. pallidus B. & Br. (from the pallid peridium) ab.
Rounded, depressed. Pe. nearly smooth, somewhat soft, white,
then dull tan-colour. Gl. without a sterile base, white, yellow,
then pale brown.
O d o u r w e ak . F i r p la n ta tio n s . O c t. D iam . | in .
2117 H eitrinus Vitt. (from the colour ; citreus, lemon-yellow) a bc .
Irregularly globose or ovate, lobed, indented, deformed. Pe.
shining as if silky, greenish-lemon when young, then lemon,
golden-yellow, bright brassy-yellow or sulphur-cream, becoming
rufous-black.
U se d as fo o d in p a s t tim es b y co u n try fo lk in th e truffle d is tric ts o f E n g la n d .
O d o u r, w h ich com m u n ic a te s its e lf to a n y th in g n e a r, s tro n g o f cheese.
M a y -D e e . D iam . i® in .
2118. H. olivaeeus Vitt. (from the colour of the gleba, like a ripe
Irreralarly^globose or ovate, lobed, indented, deformed. Pe at
fifst silky, whitish or faintly lemon, becoming rufescent when
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