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Plants of Taiwan

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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: 161


    21. DIPTERIDACEAE
    CHARLES E. DE VOL
    Rhizome woody, creeping, covered with very narrow linear, dark, stiff, scales; siphonostelic. Fronds broadly fan-shaped, cleft to base into two equal divisions, each half dichotomously divided into several long linear lobes; main veins dichotomous, with many nearly parallel smaller veins connecting the main veins at right angles, forming oblong areolae, these sub-divided into many small rectangular areolae; stipes stout, longer than lamina, grooved on upper side, without scales except at base. Sori small, round, exindusiate, one per small areolae, borne on junction of veinlets, paraphyses mixed with sporangia.
    Only one living genus.
    1. DIPTERIS Reinw.
    The characters of the genus are the same as given for the family. About eight species, one in Taiwan.
    1. Dipteris conjugata Reinw., Sylloge 2: 3.1824; Wu, Wong & Pong in Bull. Dept.
    Bull. Sun Yatsen Univ. No.3, 94. pl. 38. 1932; Holtt., Fl. Mal. 2: 135. 1954; Copel., Fern Fl. Philip. 3: 455. 1960. Pl.54
    Rhizome about 1 em in diameter. Fronds fan-shaped, cut into 2 halves, main
    lobes of each half narrowly lanceolate, with 2 main veins in each lobe, divided over * of way to base, apices acuminate, margins thickened with coarse serration; main veins prominently raised; young fronds densely covered with soft reddish-brown tomentum, especially on apices of lobes, mature fronds glabrous and glaucous beneath.
    Distributed in Indonesia, the Philippines, Islands of Pacific, Taiwan and S. W.
    China.
    @@@TAIPEI: Yangmingshan, Kao & Chuang 1683; Kueishan, Huang 7536; Kankou, Hsu 9112, TAOYUAN: Chiaopanshan, Simada 4884, MIAOLI: Tachi, Do 407, PINGTUNG: Nan- jenshan, Kuoh 13176*, TAITUNG: Green Island, Huang 6995; Botel Tobago, Huang & Kao
    5463,