Plagiogyria PLAGIOGYRIACEA-DENNSTAEDIACEAE Microlepia 



3. Plagiogyria euphlebia (Kunze) Mett. (Bd. F. 129). Sterile leaves 45-90 cm. tall; 

 fr. VIMX; sterile pinnae 15-20 cm. long. China, Japan, India; locally in Ki. By 

 mountain streams. 



14. ONOCLEACEAE Ching &p}M& (Chang Chio Chiieh K'o) 



Terrestrial ferns: rhizomes short, thick, scaly: leaves dimorphic, stipitate, pinnate 

 or bipinnatifid; fertile leaves brown to purplish, with strongly contracted coriaceous 

 revolute margins: sporangia protected by a thin inner indusium. 2 genera. 



1. Matteuccia Todaro Ostrich Fern JkPlMM (Chang Chio Chiieh Shu; 



Long-horn Fern Genus) 



Large terrestrial ferns with clustered dimorphous leaves: fertile leaves erect, rigid; 

 pinnae contracted, purplish brown; margins reflexed, concealing the sori, torn when 

 mature; sterile leaves bipinnatifid, texture thin; stipes with large brown scales at the 

 base; under surface of the lamina and rachis sparsely covered with small scales. 4 

 species. (Named for Carlo Matteucci, an Italian physicist.) 

 1. Matteuccia orientalia (Hook.) Trev. (Struthiopteris orientalis (Hook.) Bedd.) 



Oriental Ostrich Fern (Bd. F. 20). 75-100 cm. tall; fr. VIMX; fertile pinnae 



6-12 cm. long. China, Japan, Himalaya; locally in An., Ki. Wooded hillsides. 



Figs. 8 and 9. 



15. DENNSTAEDTIACEAE Ching gjg&ft (Tai Pao Chiieh K'o) 

 Terrestrial ferns: rhizomes creeping, hairy; scales very narrow, if present : leaves 

 pinnate to tripinnate, usually pubescent, the hairs septate; veins free: sori marginal 

 or submarginal, borne on ends of veins; indusium cup-shaped. 7 genera. 



Key to the Genera 



Ultimate pinnules cuneate 3. Sphenomeris 



Ultimate pinnules not cuneate. 



Sori marginal: lower pinnae much the largest 1. Dennstaedtia 



Sori submarginal: lower pinnae often shortened, never decidedly longer 2. Microlepia 



1. Dennstaedtia Bernh. $kMMM (Tai Pao Chiieh Shu; 

 Pocket Indusiate Fern Genus) 



Medium sized terrestrial ferns: rhizomes widely creeping, densely covered with 

 multicellular hairs: leaves bipinnate to decompound; loiver pinnae longest: sori marginal 

 on apex of a free veinlet; indusium cup-shaped, united with the marginal sinus. 70 

 species. (Named for August Wilhelm Dennstaedt, a German botanist who wrote on 

 the flora of Weimar about 1800.) 

 1. Dennstaedtia scabra Wall. (Bd. F. 24). 40-65 cm. tall; fr. VII-IX; lower pinnae 



10-18 cm. long. China, Japan, Malaya; locally in Ki. Wooded hillsides. Fig. 10. 



2. Microlepia Presl MWfl&WR (Hsi Lin Pao Chiieh Shu; 

 Thin-scaled Indusiate Fern Genus) 



Medium sized ferns, usually densely covered with straight multicellular hairs: 

 rhizomes creeping, hairy: leaves pinnate to tripinnatifid; lowermost pinnae often 

 shortened; pinnae and pinnules often unequal-sided, the adaxial side larger; veins free, 

 simple or forked: sori borne at the end of a vein, submarginal; indusium half cup- 

 shaped, usually with a more or less cuneate hairy base, attached at base and sides. 

 45 species. (Greek: micro, small, and lepis, scale; referring to the indusia.) 



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