99 151 



rent, but I cannot consider it specifically distinct. Stübel's nr. 751 from Ecuador 

 shows to some extent the same peculiarities and even in the authentical specimen 

 of the type one can find a difference of some few millimeters between the length 

 of the segments of the upper and lower side of the lower pinnæ. 



162. D. Glaziovii Christ; C. Chr. Revision nr. 62 fig. 40, 



Area: Brazil, Minas Geraes and Rio. 



Since the publication of my Revision I have seen the type-specimen of this species, 

 Glaziou nr. 5267 (C) and specimens from Minas Geraes, Itacolunii, 140Ü m. 

 Schwache nr. 14109 (C). In these specimens the veins are simple and the basa! 

 segments not free; the stipe bears 3 — 4 pairs of glanduliform pinnæ. Our specimen 

 (H) has furcate veins and the lower segments often quite free, thus belonging to a 

 more divided form that like the preceding species has the basiscop side of the 

 pinnæ enlarged. But the species can be much more divided, fully bipinnate or 

 even tripinnatifid. The bipinnate form with simple or furcate veins is 



Gymnogramme patula Fée, Cr. vase. Brés. 1 : 59 tab. 14 fig. 3 1869. 



Serra os Orgaos, Glaziou nr. 2822 (H); Serra de Ouro Preto, Schwacke nr. 

 15022 (C). Fee's figure is as a whole excellent, but the lower pinnulæ should be 

 reduced gradually. This form is closely allied to the Andine D. pteroidea to which 

 species Baker in Flor. bras, referred it; it differs by the sori being placed not so 

 close to the margin and not being confluent. Unfortunately I have not seen the 

 base of the lamina, but if I am right in considering it a form of D. Glaziovii it 

 very likely has the lower pinnæ abortive and glanduliform. 



A still more cut form has the pinnulæ deeply lobed and the veins pinnatifid 

 in the lobes; this is 



Gymnogramme expansa Fée, Cr. vase. Brés. 1 : 60 tab. 14 fig. 4. 1869. 



Another specimen of Glaziou's nr. 2822 (H) agrees perfectly with Fee's figure; 

 it is sterile. 



Comparing Fee's two figures with that of mine we see here a series of forms 

 quite corresponding to those of Ü. multiformis. 



While the bipinnatifid forms of the last two species, D. euchlora and D. Glazovii 

 certainly are related to D. piloso-hispida the species are, on the other hand, also 

 and perhaps more intimately related to the bipinnate D. pteroidea. Together with 

 this they belong to a separate little group of large species of rather thin texture, 

 and dark colour. Most species belonging here have a nearly entirely glabrous 

 frond, opposite and sessile pinnæ, which are narrowed towards their base, where a 

 distinct aërophore is to be found. D. euchlora stands next to D. piloso-hispida and 

 resembles not a little the bipinnatifid form of D. Glaziovii while the more cut 

 forms of this latter species are closely allied to the two following species, which 

 are, as it seems, constantly bipinnate. They represent the highest development of 

 cutting in the subgenus, at least as for as American species are concerned. 



20* 



