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Axonopus fissifolius

(Carpetgrass)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in English:

Carpetgrass, Caratao Grass, Carpet Grass, Common Carpergrass, Common Carpet Grass, Common Carpetgrass, Louisiana Grass, Mat Grass, Narrowleaved Carpetgrass, Southern Carpet Grass

Common Names in German:

Teppichrasengras

Common Names in Portuguese:

Grama-Missioneira

Common Names in Spanish:

Gramalote, Zacate Amargo

Description

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Genus Axonopus

Perennials , rarely annuals . Culms tufted or stoloniferous . Leaf blades flat or involute , often obtuse ; ligule short, membranous-ciliolate. Inflorescence composed of 2 to many slender racemes , mostly subdigitate but sometimes along a short central axis; spikelets borne singly, subsessile , alternating in 2 rows along the narrow triquetrous rachis, lower lemma adaxial . Spikelets lanceolate to oblong , flatly biconvex , florets 2 (but apparently 1) ; lower glume absent; upper glume membranous, as long as spikelet, obscurely 4- or 5-veined; lower floret neuter , reduced to an empty lemma similar to upper glume, its palea absent; upper floret crustaceous, lemma margins inrolled , apex obtuse. x = 9, 10.

About 110 species: tropical and subtropical America, one species in Africa; two species (both introduced ) in China.

Many species of Axonopus are good forage or lawn grasses. The two species found in China have been widely introduced in the humid tropics of the world.[1]

Physical Description

Species Axonopus fissifolius

Perennial with creeping stolons. Culms compressed , 15-50 cm tall, nodes glabrous . Leaf sheaths compressed, strongly keeled ; leaf blades broadly linear , folded, 5-20 × 0.3-0.6 cm, apex obtuse ; ligule ca. 0.2 mm. Racemes 2-4, 2-paired, any others spaced slightly below, 3-8 cm, only slightly diverging; rachis glabrous. Spikelets oblong-elliptic, 1.5-2 mm, pilose near margins and apex or subglabrous, apex subacute ; upper glume and lower lemma 2-4-veined, midvein absent; upper lemma pale , ovate , as long as spikelet, obtuse with a short apical tuft of hairs ; stigmas purple. Fl. and fr. summer-autumn. 2n = 54, 80. [source]

This species is similar to Axonopus compressus, but tends to favor rather cooler and more waterlogged situations. It is naturalized in Taiwan and has also been found in Xizang. [source]

Habit: Graminoid

Habitat

Moist muddy or sandy meadows, naturalized .[2].

Typically found at an altitude of 0 to 2,770 meters (0 to 9,088 feet).[3]

Biology

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Reproduction

Duration: Perennial

Taxonomy

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Synonyms

A. compressus var. affinis (Chase) M. R. Henderson • Agrostogr. Bras. 26. 1823 • Axonopus affinis Chase • Paspalum fissifolium Raddi • Paspalum xizangense B. S. Sun & H. Sun.

Notes

Name Status: Accepted Name .

Last scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Axonopus

ZipcodeZoo has pages for 7 species, subspecies, varieties, forms, and cultivars in this genus:

A. aureus (Golden Carpetgrass) · A. barbiger (Flounders) · A. compressus (Broadleaf Carpetgrass) · A. fissifolius (Carpetgrass) · A. furcatus (Big Carpet Grass) · A. purpusii (Purpus' Carpetgrass) · A. scoparius (Carpetgrass)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 17, 2007:

Identifiers

Footnotes

  1. Shou-liang Chen & Sylvia M. Phillips "Axonopus". in Flora of China Vol. 22 Page 500, 530. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. "Axonopus fissifolius". in Flora of China Vol. 22 Page 530, 531. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 287.260 meters (942.454 feet), Standard Deviation = 861.040 based on 586 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012