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    台灣植物誌 第一版  Flora of Taiwan, 1st edition    Vol. 1

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    台灣植物誌第一版  Flora of Taiwan, 1st edition  1: 73


    10. MARAITIACEAE [y
    CHARLES E. DEVOL
    Eusporangiate, terrestrial ferns; caudex short, globose, erect; or rhizome fleshy, dorsi-ventral, creeping to suberect; dictyostelic; cortex without sclerenchyma. Fronds pinnately compound, often very large, circinnate when young, base of stipe with 2 large leathery persistent stipules; pulvinus at or near base of stipe and pulvini at bases of rachillae. Sporangia arranged in closely arranged, elongate or circular sori, or synangia. Gametophyte green, lobed, the median region thickened; endophytic fungi present.
    Considered as one family with 6 genera, but some prefer to divide it into four distinct families.
    Three genera in Taiwan.
    KEY TO THE GENERA
    1. Sporangia free, arranged in 2 linear, contiguous rows
    2. Caudex erect, globose; fronds large, bipinnate; sori submarginal .1. Angiopteris
    2. Rhizome short, suberect, dorsi-ventral; fronds pinnate; sori medial .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . KKKKKKKK... 2. Archangiopteris
    1. Sporangia fused into synangia; caudex erect, globose; fronds bipinnate-tripinnate . . . . . .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKK..K... 3. Marattia
    1. ANGIOPTERIS Hoffm. [y
    Caudex short, globose; stipes green, fleshy, with pulvinus at base. Fronds large, pinnae with pulvini at bases of rachillae, veins free; recurrent veins often present between true veins, running from margin towards costa. Sporangia dehisces by a longitudinal slit. Spores .tnlete, scabrate. Young plants much like Archang- iopteris; lamina pinnate; stipe With pulvinus about 25 cm above base (small bi- pinnate fronds lack this pulvinus); pinnae narrower than in Archangiopteris (about 2 cm broad) and have recurrent veins.
    Some consider all taxa as varieties of one species, others divide this genus into over 100 species. Two species recognized by us from Taiwan, some recognize 10 from Taiwan.
    KEY TO THE SPECIES
    1. Recurrent veins extending about half way between margin and costa. . . KKK 1. A. lygodiifolio
    1. Recurrent veins extending nearly to costa ...2. A. palmiformis
    1. Angiopteris lygodiifolia Rosenst. in Med. Rijks Herb. 31: 2. 1917.