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Pakistan | Family List | Alismataceae | Caldesia

Caldesia oligococca (F. Muell.) Buchen. in Engler, Bot. Jahrb. 2:479. 1883. Hartog in Steenis, l.c 320; Subramanyam, Aquatic Angio. 84. 1962; F.N. Hepper in Hutch. & Dalz., Fl. W. Trop. Mr. 3: 11. 1968.

  • Alisma acanthocarpum F. Muell.
  • Alisma glandulosum Thw.
  • Alisma oligococcum F. Muell.
  • Caldesia acanthocarpa (F. Muell.) Buchen.

    Glabrous herbs, perennating by fibrous-rooted radix. Leaves ovate, 6-15 cm long, 4-7 cm broad, 9-17 nerved, cordate, lobes and lamina obtuse, translucent-punctate; petiole 30-90 cm long, sulcate. Inflorescence a scapose angular panicle, longer than the petiole. Flowers white, c. 1 cm across; pedicels 1-3.5 cm long; bracts basally connate, lanceolate to linear-lanceolate, acute-acuminate, upwardly decreasing in size, translucent punctate. Sepals elliptic-ovate, 1.5-4 mm long, 1-2.5 mm broad, membranous margined, reflexed and revolute in fruit. Petals elliptic-ovate, longer than the sepals, acute. Stamens with c. 2 mm long persistent filaments. Ovaries with ventral style and punctate stigma. Achenes reniform, 2-5 mm long, dorsally 4-ridged, ridges beset with densely blunt spiny outgrowths. Seeds, reddish-brown.

    Fl.Per.: March June.

    Type: Described from Moreton Bay, Australia, Hill & F. Mueller..

    Distribution: West Tropical Africa, Pakistan, Bangla Desh, Sri Lanka (Ceylon), India, Indo-China, Java, Lesser Sunda Isles and Australia.


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