Description
Family Cabombaceae
Herbs perennial
, aquatic
. Stems slender, branched, rhizomatous
, repent
; internodes at first elongate
and apically floating, later erect
, foliate
, and shortened. Leaves dimorphic
. Submersed
leaves (Cabomba only), opposite or sometimes whorled
, palmately dissected
. Floating leaves alternate, peltate, entire
. Flowers solitary, axillary
from distal nodes, short to long pedunculate
, bisexual
, hypogynous, actinomorphic
, borne at or above water surface; perianth persistent
. Sepals 3, separate or nearly so. Petals 3, distinct
, alternating with sepals. Stamens 3--36(--51), anthers
dehiscent
by longitudinal
slits. Pistils 3--18, simple
, obclavate
or ventricose
. Ovary 1-loculed; ovules 1--3, pendulous. Styles
short. Stigmas capitate or linear-decurrent. Fruit achenelike or folliclelike, coriaceous
, indehiscent. Seed endosperm little, perisperm
abundant; embryo minute; cotyledons 2, fleshy
.
Two genera and six species: tropical
and temperate regions
; two genera and two species in China.Dezhi Fu & John H. Wiersema "Cabombaceae". in Flora of China Vol. 6 Page 119. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org.
Genus Cabomba
Herbs, young vegetative
parts often with rust-colored pubescence
, barely mucilaginous
. Leaves submersed
and floating; petiole
short to long. Submersed leaves: blade
in 3-7 dichotomously [trichotomously] branched, linear
segments. Floating leaves: blade terminal, linear-elliptic [broadly elliptic
], margins
entire
or notched
at base
, appearing only during flowering, inconspicuous [more evident in C.
aquatica, a tropical
species]. Flowers: sepals 3, petaloid
, obovate
; petals 3, oval
, with proximal
, yellow, nectar-bearing auricles
, base clawed; stamens 3-6, opposite petals; pistils [1-]2-4, simple
, 1-locular; ovules [1-]3[-5]; stigma capitate. Fruits elongate-pyriform, tapered to apex. Seeds ovoid
[somewhat globose
], tuberculate
. x
= 13.
Species 5: mostly tropical regions
, Western Hemisphere."Cabomba". in Flora of North America Vol. 3. Oxford University Press. Online at EFloras.org.
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- 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:
Nymphaeidae
()
- (Horan., 1834) J.w. Walker Ex Takhtajan, 1997
- Superorder:
Nymphaeanae
()
- (Dumortier, 1829) Thorne Ex Reveal, 1992
- Order:
Hydropeltidales
()
- T. Liebe, 1866
- Family:
Cabombaceae
()
- A. Richard, 1828
- Water-Shield Family
- Genus:
Cabomba
()
- Aublet, Hist. Pl. Guiane. 321. 1775.
- Fanwort [probably an aboriginal name]
- Specific epithet:
peltata
- F.Muell.
- Botanical name: - Cabomba peltata F.Muell.
- Specific epithet:
peltata
- F.Muell.
- Genus:
Cabomba
(
- Family:
Cabombaceae
(
- Order:
Hydropeltidales
(
- Superorder:
Nymphaeanae
(
- Subclass:
Nymphaeidae
(
- Class:
Magnoliopsida
(
- Infraphylum:
Radiatopses
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Tracheophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Notes
Basionym : Cabombaceae Brasenia peltata PurshName verified on
Similar Species
Members of the genus Cabomba
There are approximately 22 species in this genus:
C. aquatica · C. aubletii · C. australis · C. caroliana · C. caroliniana (Carolina Fanwort) · C. caroliniana A.Gray var. caroliniana Gray · C. caroliniana var. caroliniana · C. caroliniana var. flavida (Carolina Fanwort) · C. caroliniana var. paucipartita · C. caroliniana var. pulcherrima · C. caroliniana var. pulcherrrima · C. furcata (Forked Fanwort) · C. haynesii (Fishgrass) · C. palaeformis · C. peltata · C. piauhiensis · C. piauhyensis f. albida · C. pinnata · C. pubescens · C. schwartzii · C. viridifolia · C. warmingii
Bibliography
- Kuan Ke-chien. 1979. Nymphaeaceae subfam. Cabomboideae. Fl. Reipubl. Popularis Sin. 27: 56.
- Fassett, N. C. 1953. A monograph of Cabomba. Castanea 13: 116-128.
- O/rgaard, M. 1991. The genus Cabomba (Cabombaceae)--A taxonomic study. Nordic J. Bot. 11: 179-203.
More Info
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Notes
Contributors
- Brands, S.J. (comp.) 1989-2007. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed March 24, 2007.
- USDA, ARS, National Genetic Resources Program. Germplasm Resources Information Network - (GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. URL (April 24, 2008)
Identifiers
- Biodiversity Heritage Library NamebankID: 10577137
- Globally Unique Identifier: urn:lsid:ipni.org:names:605278-1
- International Plant Names Index (IPNI) ID: 116551-3
- Zipcode Zoo Species Identifier: 1218671
