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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: 21

    1. Sporangia borne in strobili, sporocarps, or in axils of leaves.
    2. Aquatic plants.
    3. Floating on water; sporangia in sporocarps.
    4. Sporocarps in clusters, externally alike; leaves of two kinds: one type floating,
    green, with midrib, the other finely dissected, submersed, root-like .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K.6. Salviniaceae
    4. Sporocarps in pairs, differing in size and shape; leaves minute, imbricate, tetra-
    gonal, about 1 mm long, with an upper and under lobe K.7. Azollaceae
    3. Rooting in mud, in shallow water or beside ponds and ditches.
    4. Leaves narrowly-linear, grass-like from a basal rosette; sporangia basal, imbedded in leaf tissue . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKKKK. KK.. 4. Isoetaceae
    4. Leaves 4-lobed, clover-like; sporangia borne in one or more sporocarps near the base of the stipe or on the stipe . . . . . . . . . . KKKKKKKKKKKKKKKKK.... 8. Marsileaceae
    2. Terrestrial or epiphytic plants.
    3. Aerial stems erect, hollow, jointed; strobilus terminal on main stem or branches ...
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKKKKK. .. 5. Equisetaceae
    3. Not as above.
    4. Stem dichotomously branching; sporangia 3-lobed, borne in axils of minute scale-
    like leaves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKKK . . 1. Psilotaceae
    4. Stem creeping, scandent, erect or pendent; leaves Small often imbricating; sporangia unilocular, borne in axils of leaves or in strobili.
    5. Vegetative leaves on branches in 4 rows, i. e. with a pair of median leaves and an outer pair of lateral leaves; spores of two kinds . KKKKK... . . . .3. Selaginellaceae
    5. Vegetative leaves usually monomorphic and spiral; or decussate, lateral leaves differing in size and shape from the median leaf; spores of one kind . . . . . .
    . ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKKK. 2. Lycopodiaceae
    1. Sporangia borne on ordinary or specialized fronds.
    2. Succulent aquatic plants; fronds bi-tripinnatifid; sori marginal covered by reflexed leaf
    margin K.15. Parkeriaceae
    2. Terrestrial, epiphytic or petrophilous ferns.
    3. Tree ferns with a trunk-like stem, with large compound leaves in a crown at summit of stem.
    4. Stem tall, over 8 cm in diameter; sori round, medial; with cup-like, or scale-like
    indusia or exindusiate KK..17. Cyatheaceae
    4. Stem tall, less than 8 cm in diameter; sori linear.
    @@@@@@5. Sori parallel to lateral veinlets; indusia linear, often double .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKKKK. 36. Athyriaceae (Diplazium)
    @@@@@@5. Sori costal, indusia linear KK20. Blechnaceae (Diploblechnum)
    6. Not tree ferns.
    7. Fronds vine-like with a twining rachis, or the fronds fan-shaped or grass-like with
    sporangia borne in terminal tufts (sorophores) 12. Schizaeaceae
    4. Fronds not vine-like, nor bearing sorophores at tips of grass-like, or fan-shaped leaves.
    5. Fronds pendent, ribbon-like, about 2 cm broad; bearing a stalked spike on basal
    1/3 of blade K..9. Ophioglossaceae (Ophioderma)
    5. Not as above.
    6. Fronds pseudo-dichotomously branched, with a dormant bud in the axils of the forks; ultimate branches pinnate or bipinnatifid; sori round, exindusiate, sporangia few . . . . . . . . . . . . . . . . . . . . . KKKKKKKKKKK.... . ... 13. Gleicheniaceae
    6. Not as above.
    7. Fronds usually fleshy, caudex usually erect, short, surrounded by a basal
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