498 COMPARATIVE MORPHOLOGY OF FUNGI 



Z. str. zw., with the gel mass at the base of the fructification (the earlier 

 columella Zstr.). At maturity the peridium bursts open irregularly. 

 The volva dissolves into a white slimy solution with which the greenish 

 spore mass mingles. It has a strong odor, reminiscent of the flowers of 

 Passiflora alata. 



This new formation of an intermediate tissue in Protubera attains a 

 full development in Clathrus. This may be exemplified with C. cancella- 



-Z.str. Zw. 



tr. Zw. _ . 4 ,^^f^w;-ivw-2w. <jef£ 



h 

 t 



m 



zstr. Zw 2w.,.f». V;-. :=*jir 



2 ,,v«^f^! H * Zstr " 



•* vi*-!-: ••• •■.!.: :•:■:.■?:■.■.■•.■ .■•..«#*& s ' i 



-^* . > " ■= '; ; ' '■"*, 5 

 ;> ■ •'■'.■.■.. .'».''••••:••■• ;i .'.'V.; 





1 



... ,. , .j. .. ........ „. 







••'".•• • ■ v.. ■ ■ ■ vs* 



I str. ***#/ Per 



?-'■' & 

 V. G ^ er 



V.ll *, . /1V.-. . 



... ..i..... ..- .•x;-.,i.«-iVrfi*<''T.--.'$;*-q;i;V./ : 



r ! ! t I A m ' '-- 



-'•.■.>'.■;■•• 



■ .-.• 'I. •• .•• 



.V,J,\'.:-.v----':;--.- •-■ •• ;••• 

 aw.g.fr.p£ Gf.Km. Iw'^tfCf 



Fig. 318. — Protubera Maracuja. 1. Section of mature fructification. 2. Section 

 of young fructification. 3. Advanced stage. 4, 5. Section of periphery. (1, natural 

 size; 2 to 5 X 11; after M oiler, 1895.) 



tus (C. ruber, 1 found in Europe and North America, and in C. columnatus, 

 in North and South America (E. Fischer, 1891, 1900; Burt, 1896). 

 As in all the order, the fructifications develop from rhizomorphs in 

 which the core and rind both increase in thickness. As in Protubera, 

 the branches of the columella grow out of the core and spread 

 out later to volva gel plates. In contrast to both of these, in 

 Clathrus the branches of the columella are not plates but true 



1 Clathrus ruber is the correct name for this plant according to the International 

 Rules of botannical nomenclature, but most authors since Persoon have preferred C. 

 cancellous [Tournef] L. ex. DC. Hence I prefer to do likewise and intend to 

 offer this case to the next Botannical Congress for inclusion in a list of nomina 

 conservanda. 



