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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: 441


    36. ATHYRIACEAE \
    CHARLES E. DEVOL and CHEN-MENG KUO'
    Nearly all terrestrial ferns. Rhizome usually short and stout, sometimes creeping and slender; scales thin, light brown to dark brown, lanceolate or ovate; stipes with 2 vascular strands at base and uniting into a single U-shaped strand above. Lamina usually thin, pinnate to decompound, rarely simple; veins usually free, goniopteroid in one genus, and forming areolae in two other genera; some species bearing multicellular septate hairs, usually glabrous; rachis groove generally open to receive rachilla grooves but not in all genera. Sori linear, single or double, J-shaped, sub-reniform or round. Indusia usually present, sometimes small and fugacious, in Woodsia borne below the sporangia.
    KEY TO THE GENERA
    1. Veins anastomosing.
    2. Veins goniopteroid; multicellular hairs plentiful . .. K1. Anisogonium
    2. Veins not goniopteroid; without multicellular hairs.
    3. Fronds 1-pinnanfid or with only lower 1-2 pairs of free pinnae KKKK.6. Dictyodroma
    3. Fronds 1-pinnate ,............ 7. Diplaziopsis
    1. Veins free.
    2. Stipes and rachis more or less pubescent.
    3. Hairs unicellular ..... , . . . . . . . . . . . KKKKKKKK.. . . . . KKKK. .... 14. woodsia
    3. Hairs multicellular.
    4. Fronds pinnate, stipe densely pubescent . KKKK... . . . . KK..12. Monomelangium
    4. Fronds bipinnatifid to decompound.
    5. Fronds bipinnatifid; sori linear.
    6. Stipe with 2 dorsal grooves; lower pinnae gradually shortened to very small
    pinnae ..11. Lunathyrium
    6. Stipe with a single dorsal groove; lowest pinnae often somewhat shortened
    .. .2. Athyriopsis
    5. Fronds bipinnate to 4-pinnatifid; sori round; upper side of rachis and rachillae with multicellular hairs.
    6. Fronds tripinnate to 4-pinnatifid; multicellular hairs abundant on stipe
    5. Cystopteris
    6. Fronds to tripinnatilid; multicellular hairs absent from stipe .
    . . . . . . . . . . . . . . . . . . . . . . .. . 9. Dryoathyrium
    2. Stipe and rachis glabrous.
    3. Base of lamina and lower pinnae articulate to rachis 10. Gymnocarpium
    3. Not as above.
    4. Sori round.
    5. Sori exindusiate . . . . . . . . . . . . . . . . . . . . . 4. Comopteris
    5. Sori indusiate.
    6. Indusia superior . . . . . . . . . . . . . . KKKK.... KK... 13. Pseudocystopteris
    6. Indusia inferior . . . . . . . . . . . . . .KKKKKKK........ KKK5. Cystopteris
    4. Sori linear, or J-shaped, single or double.
    5. Sori exindusiate . . . . . . . . . . . . . . . KKKKKKK. 4. Cornopteris