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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: 62


    8. MARSILEACEAE ī
    CHARLES E. DEVOL
    Small aquatic ferns, rooting in mud; rhizomes long creeping, siphonostelic, the cortex with many large air cavities. Leaves filiform or with 2-4 leaflets. Sporo- carps borne near base of stipe or in axil of stipe and rhizome, containing a gelatinous ribbon to which are attached 2 rows of sori; a row of megasporangia in the center of each sorus, with a row of microsporangia on either side.
    Three genera, one in Taiwan.
    1. MARSILEA L ī
    Leaves with 4 leaflets, the venation often anastomosinf; dichotomous.
    Sporocarps with hard and hairy coats; 2 small projections, called "teeth", usually borne at the stalk end, the lower tooth usually blunt, the upper tooth usually more slender, sharp-pointed. In the wet season, rhizomes long, stipes long, leaves floating on surface of water; in the dry season, rhizomes short, stipes short.
    Over 60 species, one in Taiwan.
    1. Marsilea crenata Presl, Rel. Haenk, 1: 84. pl. 12. f. 13. 1825;, Holtt. Fl.
    Malaya 2: 619. 1954; DeVol in Taiwania 13: 5. f. 2. 1967. nЦr Pl. 15
    Summer, aquatic form: Plants growing in deep water have their leaflets floating on water, the succulent stipes up to 30 cm long; those in shallow water have erect stipes 8-10 cm long; leaflets 20 mm long, entire or crenate; areolae linear, narrow; rhizome internodes 6-9 cm long.
    Winter, terrestrial form: Plants growing on drained fields much smaller, the internodes short, about 1-4 mm long, the stipes 2-8 cm long; leaflets 5-10 mm long; sporocarps 1-2, borne at or near base of stipe, on separate stalks, oval, hairy, the upper tooth acute, the lower tooth blunt.
    Distributed in Malaya, Indonesia, the Philippines, Hongkong and Taiwan.
    Growing in paddy fields, along ditches and ponds.
    @@@TAIPEI: N. T. U. Campus, De Vol 7617, Kao 6822; Neihu, Kuo 780. * ILAN: Lotung, Yamamoto 2632. TAICHUNG: Tongshih, DeVol 4386. NANTOU: Sun Moon Lake, Kudo & Sasaki 15525. CHIAYI: Chiayi City, Yamashita 30; YUNLIN: Shihkuei, DeVol 7757. TAI- NAN: Tainan City, Moritani 78. PINGTUNG: Liukiusyo, Hosokawa 1604; Kuskus, Kudo & Sasaki 15912; Mutan, Hsu 14277.