Zannichellia

Linnaeus

Sp. Pl. 2: 969. 1753; Gen. Pl. ed. 5; 416, 1754.

Common names: Horned-pondweed
Etymology: for Gian Girolamo Zannichelli, 1662–1729, Venetian apothecary and botanist
Treatment appears in FNA Volume 22.
 TaxonIllustrator 
FNA22 P16 Zannichellia Halodule Syringodium pg 85.jpegZannichellia palustris
Syringodium filiforme
Halodule wrightii

Roots single or in pairs at nodes. Leaves: blade entire, veins 1 [–3], nearly terete. Inflorescence usually of 2 flowers, 1 staminate, 1 pistillate. Flowers short-pedicellate. Staminate flowers: anthers 4-loculed. Pistillate flowers: pistils surrounded proximally by membranaceous envelope; stigma asymmetrically funnel-shaped. Fruits: convex margin minutely dentate; endocarp often coarsely papillose (visible after decay of outer fruit wall); stipe developing into podogyne (stalk supporting pistil).

Distribution

Nearly worldwide

Discussion

Species ca. 5 (1 in the flora).

... more about "Zannichellia"
Robert R. Haynes +  and C. Barre Hellquist +
Linnaeus +
Horned-pondweed +
Nearly worldwide +
membranaceous +
for Gian Girolamo Zannichelli, 1662–1729, Venetian apothecary and botanist +
pistillate +, staminate +  and short-pedicellate +
1 +  and 2 +
pistillate +  and staminate +
pseudowhorled +, opposite +  and alternate +
submersed +
anatropous +  and pendulous +
short-stipitate +
van1982a +
in pairs +  and single +
not auriculate +
not persisting +
funnel--shaped +
Zannichellia +
Zannichelliaceae +
caulescent +  and not rhizomatous +