Description
Petioles 2 - 3 x longer than the blade, membraneously alate on the base, thin to densely pilose under the blade. Pubescence simple or stellate and absent on young or submerged plants. Blade membraneous, sagittato-cordate or triangularly obovate with long blunt lobes, approximately as wide as the midrib length and widest at the base. Blade (6.5) - 20 - 30 cm long and (7_ - 20 - 30 cm wide with 11 - 13 veins (7 - 15 are possible). No pellucid markings.
Stem upright, about twice as long as the leaves, cylindrical, between the whorls triangular, pubescent under whorls as well as petioles.
Inflorescence rarely racemose, usually paniculate having 6 - 13 whorls containing 6 - 9 flowers each. Bracts lanceolate, densely ribbed. Bracts in the first whorl as long as the pedicels, in the other whorls they are a third shorter. Pedicels 1 - 3.5 cm long, sepals broadly ovate, leather-like, densely ribbed, 5 - 6 mm long, petals white, obovate, 15 - 18 mm long, stamens 20 - 24, filaments longer than the anthers, pistils numerous, style longer than the ovary.
Aggregate fruit globular, echinate, 6 - 8 mm in diameter. Achenes flat, subovately-cuneate, 3 x 1.5 mm with 3 - 5 (usually 3) lateral ribs and 2 - 3 oblong and further 3 - 5 small round glands. Stylar beak usually straight, approximately 0.75 mm.
Read more about this topic: Echinodorus Macrophyllus
Famous quotes containing the word description:
“Everything to which we concede existence is a posit from the standpoint of a description of the theory-building process, and simultaneously real from the standpoint of the theory that is being built. Nor let us look down on the standpoint of the theory as make-believe; for we can never do better than occupy the standpoint of some theory or other, the best we can muster at the time.”
—Willard Van Orman Quine (b. 1908)
“Once a child has demonstrated his capacity for independent functioning in any area, his lapses into dependent behavior, even though temporary, make the mother feel that she is being taken advantage of....What only yesterday was a description of the child’s stage in life has become an indictment, a judgment.”
—Elaine Heffner (20th century)
“Do not require a description of the countries towards which you sail. The description does not describe them to you, and to- morrow you arrive there, and know them by inhabiting them.”
—Ralph Waldo Emerson (1803–1882)