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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: 401


    35. THELYPTERIDACEAE P
    CHEN-MENG Kuo
    Terrestrial ferns. Stems not dorsi-ventral, dictyostelic; scales not peltate.
    Stipes not articulated to stem, containing two vascular bundles at base and uniting into a U-shaped bundle in the upper part. Laminae with upper surfaces of costae grooved or not, if grooved, not open to admit groove of rachis; lowest pinnae without enlarged basiscopic basal pinnules; hairs normally unicellular.
    Twenty-six genera, 17 in Taiwan.
    KEY TO THE GENERA
    1. Rachises bearing buds in axils of pinnae . KKKK...1. Ampelopteris
    1. Rachises without buds.
    2. Rachises winged; venation free . KKKKKKK.11. Phegopteris
    2. Without the combination of the above 2 characters.
    3. Laminae tripinnatifid-quadripinnatifid . 8. Macrothelypteris
    3. Laminae at most bipinnatifid.
    4. Venation anastomosing.
    5. Laminae bipinnatifid.
    6. Lower pinnae abruptly shortened.
    7. Round sessile glands at least present on lower surface of laminae ............................. KKKKKKKKK..16. Sphaerostephanos
    7. Round sessile glands wanting 12. Pneumatopteris
    6. Lower pinnae gradually shortened or not shortened.,
    7. Round sessile glands present on lower surface of laminae .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKK4. Cyclosorus
    7. Round sessile glands wanting 2. Christella
    5. Laminae simple, pinnatifid or pinnate.
    6. Laminae simple or pinnate 13. Pronephrium
    6. Laminae pinnatifid, lowest pinnae sometimes free.
    7. Venation reticulate. . . . . . . . 5. Dictyocline
    7. Venation goniopteroid 17. Stegnogramma
    4. Venation free.
    5. Lower pinnae abruptly shortened 16. Sphaerostephanm
    5. Lower pinnae not shortened or gradually shortened.
    6. Upper surface of costae not grooved.
    7. Sori indusiate 9. Metathelypteris
    7. Sori exindusiate 15. Pseudophegopteris
    6. Upper surface of costae grooved.
    7. Sori indusiate.
    8. Sori borne near costules 6. Glaphyroptertdopsis
    @@@@@@@@@8. Sori not borne near costules.
    @@@@@@@@@@@9. At least one veinlet running to the sinus membrane .
    . . . . . . . . . . . . . . . . . . . . . . . . . KKKKK...14. Pseudocyclosorus
    @@@@@@@@@@@9. Veinlets all running above the sinus .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKK10. Parathelypteris
    7. Sori exindusiate.
    8. Distinct aerophores present at base of pinnae KKK.....3. Cyclogramma
    8. Aerophores wanting. . . . . KKKKKKK. . . . . . . . K7. Leptogramma