86 ENDOSPORE.E. [CHONDRIODERMA. 



with the bases of the sporangium-walls ; they had, apparently, been 

 exposed to weather before gathering, as the tangle of capillitium, where 

 any remains, is closely wound about the coluonella, as if from the effect 

 of rain. From the structure of the sporangium- wall and capillitium 

 Berkeley was clearly right in placing it as a Diderma. The substance 

 of the outer layer is very similar to that of C. Sauteri, and there is a 

 strong resemblance to that species in the large spinose spores and the 

 pale, rather broad threads of the wavy capillitium ; it differs in the 

 presence of the stalk and cylindrical columella, which contain dense 

 deposits of lime extending for some distance into the hypothallus. 



Hob. On Hymenophyllum. New Zealand (K. 1559, L:B.M.65 slide). 



15. C. lucidum Oooke, Myx. Brit., p. 42 (1877). Plasmodium ? 

 Sporangia subglobos'e, sessile or occasionally stipitate, scattered, 

 0'7 mm. diam., bright reddish-yellow, shilling, dehiscing in more 

 or less petal oid lobes ; sporangium- wall of two layers without 

 deposits of lime, the outer cartilaginous, closely combined with 

 the membranous inner layer. Stalk very short, 1 mm. high, in 

 one instance 3 mm. high, brown, slender. Columella irregularly 

 globose, 0*35 mm. diam., seated on a narrow stalk, rugose and 

 pitted, ochraceous. Capillitium not abundant, of irregular purple- 

 brown threads 2 to 5 ^ diam., branching and anastomosing, with 

 wide expansions at the axils. Spores dark purple-brown, closely 

 spinulose, 12 to 14 /x diam. Mass., Mon.. p. 204. Diderma lucidum 

 Berk. & Br., in Ann. Mag. Nat. Hist.,'ser. 3, vii., p. 380 (1861). 

 Chondrioderma Carmickcelianum, Mass., Mon., p. 202 (in part). 



Plate XXX \ 7 '., A. e. sporangia, x 20 ; /. broken sporangium showing 

 stalked columella, from mounting in glycerine, x 20 ; g. capillitium and 

 spores, x 280 ; li. spore, x 600 (Trefriw, Wales). 



In Berkeley's description of this species (I.e.) two localities are given : 

 Trefriw, Wales, and Cumberland. Examples of the former gathering 

 are met with in Broome's coll. (B. M. 25), named " Diderma lucidum" and 

 in Berkeley's collection at Kew, named " Diderma CarmicliaeHanum, 

 ex Herb. Broome ' : (K. 353). From the irregular character of the 

 capillitium, and the absence of lime-deposits in the sporangium-wall 

 and columella, it is possible that this is not a normal development, but 

 an unusual form of some other known species. 



Hal. On moss. Trefriw, Wales (B. M. 25). 



SPECIES NOT MET WITH IN THE QUOTED COLLECTIONS. 



16. C. fallax Host., Mon., p. 171 (1875). Sporangia seated 011 

 a common hypothallus, crowded, but not closely compacted, 

 sessile, globose, chalk- white ; columella either small flattened or 

 distinct ovate ; capillitium fasciculate below, becoming very 

 diffuse above, dull violet ; spores dull violet, strongly spinulose, 

 12 to 14 /x diam. 



Hob. Near Salzburg, Tyrol (Sauter). 

 May not this be a form of C. globosum? 



17. C. anomalum Host., Mon., p. 169. Plasmodiocarps venulose, 

 creeping, very convex, variously contorted, superficially minutely 



