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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: 325


    KEY TO THE GENERA
    32. ASPIDIACEAE Te
    CHARLES E. DEVOL and CHEN-MENG KUO
    Terrestrial ferns, a few growing in crevices of rocks; rhizome dictyostelic; creeping or suberect; stipe usually with a ring of vascular bundles (with only 2 bundles in Quercifilix, which is a very small fern); stipe and rhizome scales usually long, brown and narrowly linear. Fronds pinnate to decompound; veins anastomosing in most genera, with at least one row of costal areolae, areola often with included veinlets, some genera with free venation; stipe and rachis grooved, rachis groove hot open to rachilla grooves; upper side with ctenitis hairs along rachis, rachillae and costae in nearly all taxa. Sori usually round, dorsal on veinlets, on a plexus of veinlets, or terminal on a veinlet within an areola, in two genera the sporangia follow the veins, becoming acrostichoid, indusia usually present, sometimes fugacious, round-reniform.

    . . . . . . . . . . . . . . . . . . . . . . .. KKKKKKKK.. . 4. Hypodematium
    8. Basal stipe scales dark-brown. hairs multicellular .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... KKKKKKK..5. Lastreopsis
    1. A tooth present in each sinus, the tooth elevated on adaxial surface.
    2. Veins anastomosing 6. Pleocnemia
    2. Veins free 7. Pteridrys
    1. No tooth present in each sinus, or if present, in the same plane as the frond.
    3. Sporangia acrostichoid.
    4. Fronds trifoliolate, the margin crenate to lobed 8. Quercifilix
    @@@@4. Fronds trilobed, 1-pinnate or simple and entire, the margin entire .
    . . . . . . . . . . . . . . . KKKKKKKKKKKKKKKKKKK... 3. Hemigramma
    3. Sporangia in definite sori.
    5. Veins anastomosing. KKKKKKKKKKKKKKKKKK... ... 9. Tectaria
    5. Veins free or with only a few veins anastomosing in fertile fronds.
    6. Basal basiscopic vein of a vein group springing from costa . . . KKKKK..
    . . . . . . . . . . . . . . . . . . . 2. Ctenitopsis
    6. Basal basiscopic vein of a vein group springing from costule.
    7. Abaxial surfaces of costae and costules densely scaly.. . . . . . . . .
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KKKKKKK . . ..1. Ctenitis
    7. Abaxial surfaces of costae and costules densely hairy or also bearing a few scattered scales.
    8. Basal stipe scales reddish-brown; hairs unicellular .
    1. CTENITIS C. Chr. ؤ
    Usually large terrestrial ferns; rhizome short, stout, erect; stipes tufted, scaly. Fronds bipinnatifid to decompound, broadest at base, all pinnae cata- dromous except for the basal pair; veins free; rachis and rachillae scaly on