NO. 1867 AMERICAN FKRXS — CIIRISTEXSEN 395 



cm. by 6 cm.), with a very short stem and only 3 or 4 indistinct 

 veins. 



DRYOPTERIS PTERIFOLIA (Mett.) Kuntze 



(Revision 327, No. 7S, Fig. 49.) 



GuATEMAL.\ : Pansamala, Depart. Alta Verapaz, 3,8co ft, von Tncrck- 

 Iieim (/. Donnell Smith 971) ; Donncll Smith 1551. Trail from 

 Senahu to Actala, Alta Verapaz, rocky bank at border of forest, 

 Maxon and Hay 3311. Coban, 1350 meters, von Tucrckhcim II. 2181. 



Bolivia: Yungas, 6,oco ft., Rusby 1885, sine num. 



A large species with pinn?s up to 25 cm. long by 4 cm. broad, the 

 costse and costnlcs clothed sparsely beneath with stiff, patent hairs. 

 In my "Revision" I considered Neplirodimn retrorsum Sodiro the 

 most developed form of this species. It is, however, rather a variety 

 with pendent pinnae; none of the specimens listed above, although 

 very large, show this peculiarity. The species is apparently exin- 

 dusiate, and the sori show a tendency to elongation ; the receptacles 

 are setose. 



In my "Revision" I have supposed that Alsophila pilosa Mart, and 

 Gal. belongs to D. rudis, and not to D. ptcrifolia. The Guatemalan 

 specimens listed above seem, however, to agree completely with the 

 plate of Martens and Galeotti, and most probably Professor Hier- 

 onymus was right in regarding A. pilosa as a synonym of D. pteri- 

 folia. 



This Central American form is a very large plant, and it may be 

 doubted whether it is conspecific with true D. pterifolia, which was 

 described from scanty material from Bolivia. Still, the Bolivian 

 specimen listed above is to me not specifically distinct from the Cen- 

 tral American form, although considerably smaller and more soft- 

 hairy. 



A further synonym of D. ptcrifolia is Aspidium gleichcnioides 

 Christ.^ I omitted this form in my "Revision" because Dr. Christ 

 described the lamina as "basi vix attennafa/' However, an exam- 

 ination of the type specimen from Costa Rica, Tondiiz 1935, shows 

 at once that it belongs to the group of D. opposita and not to tlie 

 group of D. patens, as Christ supposed, and, further, that it can 

 scarcely be separated from D. pterifolia. The hairs of the costa? and 

 costulre beneath are somewhat more autrorse than in common D. 

 pterifolia, but it agrees otherwise. 



^Aspidium gleichcnioides Christ, Bull. Herb. Boiss. II. 4:960. 1904; Dryop- 

 teris gleichcnioides C. Chr. Ind. Fil. 268. 1905. 



