Interesting Facts
Description
Family Pontederiaceae
Herbs annual
or perennial
, aquatic
, floating or rooting
in substrate. Roots
fibrous
. Vegetative
stems short or creeping
, thick. Leaves rosulate or distributed along stem, distichous; petiole
mostly distinct
, sometimes inflated
; leaf sheath
usually present; leaf blade emersed
or submersed
, broadly ovate
, lanceolate, or broadly linear
, sometimes completely reduced, stomata paracytic
. Flowering stems erect
, solid, terminating in a leaf, spathe
, and inflorescence. Inflorescences paniculate
, racemose, spicate
, umbellate
, or 1-flowered, subtended by a spathelike or tubular
leaf sheath; bracts minute or absent. Flowers bisexual
, mostly actinomorphic
, sometimes zygomorphic. Perianth segments 6, in 2 whorls, petaloid
, free
or basally connate
into a tube
. Stamens usually 6 in 2 whorls, rarely 3 or 1, inserted
on perianth, often unequal or dissimilar; filaments
slender, free; anthers
2-loculed, introrse
, dehiscing by longitudinal
slits or rarely by pores
; pollen grains
2- or 3-nucleate, colpi 1 or 2(or 3), distal or subequatorial. Ovary superior, 3-loculed and placentation axile
or 1-loculed and placentation parietal; ovules numerous
per locule or 1 and pendulous, anatropous
. Style 1; stigma capitate or minutely 3-lobed. Fruit a 3-valved capsule or indehiscent. Seeds small, longitudinally ribbed
or smooth
; endosperm copious
, mealy
; embryo central in seed, straight, terete
.
Six genera and ca.
40 species: widespread in tropical
and subtropical
regions; two genera (one introduced
) and five species (one introduced) in China.[1]
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- eukaryotes
- Kingdom:
Plantae
()
- Haeckel, 1866
- Plants
- Subkingdom:
Viridaeplantae
()
- Cavalier-Smith, 1981
- Phylum:
Tracheophyta
()
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Vascular Plants
- Subphylum:
Euphyllophytina
()
- Infraphylum:
Radiatopses
()
- Kenrick & Crane, 1997
- Class:
Magnoliopsida
()
- Brongniart, 1843
- Dicotyledons
- Subclass:
Commelinidae
()
- Takhtajan, 1967
- Superorder:
Pontederianae
()
- Takhtajan Ex Reveal, 1992
- Order:
Commelinales
()
- Dumortier, 1829
- Family:
Pontederiaceae
()
- Kunth, 1815[1816]
- Water-Hyacinth Family
- Genus:
Schollera
()
- Specific epithet:
kotschyana
- Kuntze
- Botanical name: - Schollera kotschyana Kuntze
- Specific epithet:
kotschyana
- Kuntze
- Genus:
Schollera
(
- Family:
Pontederiaceae
(
- Order:
Commelinales
(
- Superorder:
Pontederianae
(
- Subclass:
Commelinidae
(
- Class:
Magnoliopsida
(
- Infraphylum:
Radiatopses
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Tracheophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Notes
Publishing author : Kuntze Publication : Revis. Gen. Pl. 2: 719 1891 [5 Nov 1891]
Similar Species
Members of the genus Schollera
ZipcodeZoo has pages for 0 species, subspecies, varieties, forms, and cultivars in this genus:
More Info
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Further Reading
- Wu Kuo-fang. 1997. Pontederiaceae. In: Wu Kuo-fang, ed., Fl. Reipubl. Popularis Sin. 13(3): 134--141.
Notes
Contributors
- The International Plant Names Index. Accessed Dec 27, 2011.
Identifiers
- Zipcode Zoo Species Identifier: 4575145
Footnotes
- Guofang Wu & Charles N. Horn "Pontederiaceae". in Flora of China Vol. 24 Page 40. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
