Interesting Facts
Description
Genus Ischaemum
Perennial
, or sometimes annual
. Culms
often decumbent
and much branched. Leaf blades
linear
to lanceolate, narrowed to ligule, sometimes pseudopetiolate; ligule membranous; sheath
auricles
often present. Inflorescence of paired
racemes
, or occasionally subdigitate, terminal
and axillary
, exserted or sometimes supported by a spatheole
; racemes 1-sided, when paired often locked back to back and appearing as a single cylindrical raceme, spikelets
of a pair similar or not; rachis internodes and pedicels stoutly linear to thickly clavate
, U-shaped or triquetrous
in cross
section
. Sessile spikelet dorsally compressed
; callus truncate
or obtuse
, inserted
into hollowed internode apex; lower glume
papery
to leathery, shallowly convex
or almost flat, 2-keeled or rounded
on flanks, sometimes winged
, often rugose
; upper glume boat-shaped, awnless or with straight awn
from apex; lower floret male, well developed with palea; upper lemma usually deeply 2-lobed, awned
from sinus
, rarely awnless; awn geniculate, glabrous
. Pedicelled spikelet as large as sessile or much smaller, upper lemma sometimes geniculately awned.
About 70 species: throughout the tropics but mainly in Asia, especially India; 12 species (one endemic) 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
()
- (Auct.) Cavalier-Smith, 1998
- Infraphylum:
Angiospermae
()
- Auct.
- Class:
Spermatopsida
()
- Brongniart, 1843
- Subclass:
Commelinidae
()
- Takhtajan, 1967
- Superorder:
Juncanae
()
- Takhtajan, 1967
- Order:
Poales
()
- Small, 1903
- Family:
Gramineae
()
- A.L. de Jussieu, 1789, nom. cons., nom. alt.
- Subfamily:
Panicoideae
()
- Tribe:
Andropogoneae
()
- Subtribe:
Ischaeminae
()
- Genus:
Ischaemum
()
- C. Linnaeus, 1753
- Murainagrass
- Specific epithet:
fragile
- R.Br.
- Botanical name: - Ischaemum fragile R.Br.
- Specific epithet:
fragile
- R.Br.
- Genus:
Ischaemum
(
- Subtribe:
Ischaeminae
(
- Tribe:
Andropogoneae
(
- Subfamily:
Panicoideae
(
- Family:
Gramineae
(
- Order:
Poales
(
- Superorder:
Juncanae
(
- Subclass:
Commelinidae
(
- Class:
Spermatopsida
(
- Infraphylum:
Angiospermae
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Tracheophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Synonyms
Digastrium fragile (R. Br.) A. Camus
Similar Species
Members of the genus Ischaemum
ZipcodeZoo has pages for 8 species, subspecies, varieties, forms, and cultivars in this genus:
I. aureum (Golden Duckbeakgrass) · I. byrone (Hilo Ischaemum) · I. chordatum (Ischaemum) · I. indicum (Indian Murainagrass) · I. muticum (Seashore Centipede Grass) · I. polystachyum (Paddle Grass) · I. rugosum (Co Muraina) · I. timorense (Stalkleaf Murainagrass)
More Info
- Search for Pictures: images.google.com
- Search for Scholarly Articles: Google Scholar
- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
Further Reading
Notes
Contributors
- Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 31, 2012.
Data Sources
Accessed through GBIF Data Portal December 04, 2007:
- Australian National Herbarium
- , Australian National Herbarium
- National Herbarium of New South Wales, Plants of Papua New Guinea
Identifiers
- Biodiversity Heritage Library NamebankID: 8966265
- Global Biodiversity Information Facility Taxonkey: 15760863
- Globally Unique Identifier: urn:lsid:ipni.org:names:406168-1
- Zipcode Zoo Species Identifier: 2119198
Footnotes
- Bi-xing Sun & Sylvia M. Phillips "Ischaemum". in Flora of China Vol. 22 Page 572, 596, 609, 639. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
