165 



Polypodium flexilobum Christ in Acad. Mans. Ceog. Hot. 1S!»4. p. ]<)7. 



LUZON, Province of Bataan, Lamao. Copeland 220, det. by Christ, Mindanao, 

 Davao, Todaya, Copeland. Not very distinct from /*. ellipticitm Tlmnl). 



DRYOSTACHYUM I. Sin. 



Dryostachyum splendens J. Sin., Hooker's Journ. Hot. 3: 3'M ; 4: 62 ; Copeland. 

 Polypod. Phil. Ida., 134. 



Fronde deorsum in alam scariosam humiferam latam fere ad rhizom- 

 atem protracta. (Tab. 26, 27.) 



Luzon, Cuming 87. Mindanao, Copeland 1285. 



Dryostachyum pilosum J. Sin.. Schkuhr. (D. splendens J)iels in Nat. Pllnfani. I. 

 4: 827, Fig. 110.) 



Fronde deorsum in stipitem brevem attenuata, aec eniin Bcariosa; rhiz- 

 omate ca. 5 nun. crasso. 



Luzon, Cuming 90; Mindanao, San Ramon, 200 in. s. m.. Copeland 1806. 



This lias generally been regarded as not distinct from D. splendent J. Sin., 

 and if Hooker * had been correct in assuming that they differed only in pubescence, 

 be would liave been well justified in combining them. But the base of the frond 

 is entirely different. D. splendent is a mucli larger and stouter fern, forming 

 '•nests," the basal part of tbe frond being a hard, brown liumus receptacle. 

 Cuming's specimens in the herbarium of tbe Bureau of Science, Manila, do not 

 show quite the whole frond of eitber species; but they are sufficient for the 

 positive identification of my Mindanao plants of both. 



Both species have apparent articulations just above the attachment to the 

 rhizome; but I strongly suspect, especially in the case of D. splendent, that this 

 articulation is merely a vestigial structure, and that D. drynarioides (Hooker) 

 Kuhn is therefore not distinct in this respect. 



A satisfactory disposition of all these plants would be to include them with 

 Aylaomorphu, separating the latter from Polypodium. 



THAYERIA Copeland, genus novum. 



Polypodiacea epiphytica Drvnariac affinis. Rhizomate crasso; fronde 



solitiiria in ranio Laterale rhi/.omatis endogena, cornucopiaef orme ; ramo 

 in 1'undo cornucopiae in radiculas multas dissipato; textura frondis. 

 venisque Drynariae. Soris verisimiliter ad partem contractam apicalem 



frondis diversae restrictis. Genus viro doetissimo Alfredo Thayer, 

 ]>rofessori universitatis texanae dedicatum. 



Thayeria cornucopia Copeland. 



Rhizomate late scandente vel saepius deseondente, 2-15 cm. crasso, 

 squamulis lanceolatis subpeltatis aeuminatis 1—1.5 mm. longis appressis 

 vestito; ramo frondiferente 2-G cm. longo, ca. 1 cm. crasso, horizontale, 

 frondem e latere fisso cmittcnte; fronde deorsum scariosa, fusca, lobis 

 basal ibus grandibus inviceni involventibus, sursum viride, fere plana, 

 glabra, profunde pinnatifida, segmentis deciduis. (Tab. 28.) 



2 Syn. Fil. 5: ( JG. 



