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Axonopus compressus

(Broadleaf 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:

Broadleaf Carpetgrass, Blanket Grass, Broadleaf Carpet Grass, Flat-Joint Carpet Grass, Lawn Grass, Louisiana Grass, Tropical Carpet Grass

Common Names in German:

Teppichgras

Common Names in Portuguese:

Pasto-Chato

Common Names in Spanish:

Alfombra, Cañamazo Dulce, Grama Trenza, 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 compressus

Perennial with vigorous creeping stolons, forming sward. Culms 15-60 cm tall, nodes bearded . Leaf sheaths loose , strongly compressed , keeled , basal sheaths imbricate; leaf blades broadly linear to lanceolate, flat or folded, 5-20 × 0.6-1.2 cm, glabrous or adaxial surface pilose , apex obtuse ; ligule 0.3-0.5 mm. Racemes 2-5, digitate or subdigitate, 4-10 cm, only slightly diverging; rachis glabrous. Spikelets oblong-lanceolate, 2-2.7 mm, pilose or glabrous, apex acute; upper glume and lower lemma 2-4-veined, midvein absent, laterals marginal ; upper lemma pale, oblong-elliptic, shorter than spikelet, obtuse with an apical tuft of hairs ; stigmas pale . Fl. and fr. summer-autumn. 2n = 40, 50, 60, 80. [source]

Habitat

Roadsides, weedy places on moist ground , naturalized .[2].

Typically found at an altitude of 0 to 4,653 meters (0 to 15,266 feet).[3]

Taxonomy

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Synonyms

Milium compressum Sw. • Milium compressum Swartz • P. guadaloupense Steudel. • Paspalum compressum (Swartz) Raspail (1825) • Prodr. 24. 1788

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 February 28, 2008:

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 compressus". in Flora of China Vol. 22 Page 530, 531. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. Mean = 358.890 meters (1,177.461 feet), Standard Deviation = 1,003.450 based on 377 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012