158 
ENDOSrORE^R. 
[enteriuium. 
(1845), p. G7. Dictydia'thalium applanatum Rost., in Fuckel, 
Symli. Myc, Nachtr. 2, p. 69. Retimlaria mtoxanUbu Berk., in 
Hook., Journ. Bot. (1851), p. 201. ClathroptycMum Berkeleyi 
Mass., Mon., p. 53, 
Plate LXXVI., B. — a. part of an Eethalium seen from above, x 20 ; 
1). tubular sporangia from an gethalium ; in two of them the spores are 
dispersed and the caps and threads of the sporangium-walls are left free, 
X 20 ; c. sporangia from a stouter fethalium, x 20 ; d. cap and threads of 
sporangium-wall, x 50 ; e. hypothallns, areolated with the bases of the 
sporangia, x 60 ; /. spores and portion of a thread, x 280 ; g. spores 
and portion of thread from tethalium drawn at c. x 280 (England) ; 
//. spore and thread from a stout Eethalium, x 280 (Sikkim, K. 1669) ; 
spore, X 600 (England) ; h. spore from type of Clatliro2)tychium 
Bcrlieleyi Mass., x 600. 
The spores are dispersed by the threads giving way at the base 
and the spoi-angia separating in tufts from the persistent shining 
hypothallus. American specimens have been received from Dr. Rex 
which show an abnormal development ; the sporangium- wall is, to 
a great extent, continuous between the threads, and forms a lattice- 
work with wide expansions. An unusually stout form has been 
obtained from Sikkim (K. 1 669), and named Reticularia entoxantha by 
Berkeley, but referred by Rostafinski to Clatliroptychium rugulosum, 
I.e. ; it is an olive-black asthalium, 3 mm. thick, and bright yellow 
within ; the threads of the sporangia are 10 /i diam., waved and 
thickened at the margins ; the spores are yellow and spinulose, 
9 to 11 fi. Clatlirojptycliium Berkeleyi Mass., from Ceylon (K. 1666), 
differs only from the robust forms of D. 2^lumbeiim in the more 
strongly spinulose spores ; but as the spores of most gatherings vary 
in the amount of roughness, this character alone is not sufficient to 
mark specific difference. Clatliroptychium cinnaharinum, Sacc, in 
Michelia, i., p. 546, is said to have vermilion sporangia, with blackish- 
purple opercula and threads ; this description applies to immature 
specimens of D. plumbeum. 
Hal. On dead wood.— Rudloe, Wilts (B. M. 20) ; Batheaston, 
Somerset (B. M. 292, 299) ; Luton, Beds (L:B.M.128) ; France (Paris 
Herb.) ; Germany (Strassb. Herb.) ; Hungary (K. 828) ; Ceylon 
(K. 1664) ; Sikkim (K. 1669) ; Australia (K. 834) ; Philadelphia 
(L:B.M.128) ; New Jersey (B. M. 945) ; S. CaroHna (B. M. 928, 
947). 
SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 
2. D. dissiliens Hazslinszky, in Oester. Bot. Zeitsch., xxvii., 
p. 85 (1877). Peridia pulvinate, round or oval, 2 to 5 mm. diam. ; 
external wall chestnut-brown, dull pruinose ; the inner wall, 
together with the spores and slaters, yellow-brown. Spores 
8 to 10 fx. 
Hah. On willow. — Hungary. The mature peridium bursts elastically, 
and the elaters then become three times longer. 
Genus 31.— ENTERIDIUM Ehrenberg, in Spreng. Jahrb. 
Gewachs., I., ii., p. 55 (1818). ^thalium of confluent interwoven 
sporangia, their walls perforated with large openings ; capillitium 
none. 
