V 



ICONES FILICUM SINICARUM 



II 



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PLATE 6. 



. v 



DRYOPTERIS ENNEAPHYLLA (Baker) C. Christensen 



POLYPODIACEAE 



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DRYOPTERIS ENNEAPHYLLA (Baker) C. Chr. Ind. 263 (1905); Matthew in Journ/Linn. 



Soc. 38:362 (1911).. 



. Nephrodium enneaphyllam Baker in Journ. Bot. (1887) 170; Diels in Nat. Pfl. Fam. I. 4. 168. 



Caudex erect, thick as a thumb, clothed in dense reddish-brown lanceolate 

 acuminate membranaceous scales to 2 cm. long; stipes tufted, stramineous, terete 



* 



beneath, deeply grooved above and so is the rachis, nearly 30 cm. long, densely scaly 

 near the base, become rather sparsely so upward, scales at the base similar to those only 

 rhizome; frond deltoid-oblong, 20-30 cm. long and a little less broad, simply impari- 

 pinnate, moderately firm in texture, green and glabrous on both sides; pinnae 3-5 

 on each side, the terminal one similar to the lateral ones- shortly petiolate, lanceolate- 

 oblong, 10-13 cm. long, 2.5 cm. broad, shallowly crenate, truncate or subtruncate at 

 the base, blunt at the apex; veins in numerous pinnate subpatent groups, veinlets fine, 

 ascending, 3-4 on each side of the lateral veins; sort large, in 3-4 irregular rows, almost 

 restricted to the central half of the pinnae, leaving a broad free margin, medial on the 

 veinlets, inducium large, peltate, brown, glabrous, with a slightly depressed centre, 

 subpersistent. 



Distribution: Hupeh, Fukien. 



Rather a variable species, evidently intermediate between D. podophylla (Hk.) 

 and D. sieboldii (van Houtte) with a much stronger approach to the latter. It was 

 discovered by A. Henry around Ichang, W. Hupeh. Henry's No. 3217, which has 

 rather deeply lobato-incised pinnae with truncate or subtruncate base, while Henry's 

 No. 7881 from the same locality deviates from the type in much larger pinnae (to 17 

 cm. long, 3.5 cm. broad) with rounded base, only shallowly crenulato-serrate margin, 

 and 1-2 irregularly seriate sori, confined to the inner half breadth of the pinnae. Dunn's 

 specimen, No. 3830, from Central Fukien (1905) agrees well with Baker's type except 

 that it has still more finely crenato-serrate margin than Henry's No. 7881, and yet 

 it should belong here. 



Plate 6. Fig. 1. Habit sketch (natural size). 2. A portion of pinna showing venation and 

 sori (x 2). 3. A portion of pinna showing inducium and sori in situ on the veinlet and the way of 

 insertion of sporangia (x 6). 4. Scales on the base of stipe (x 8). 



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