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Eragrostis japonica
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| Synonyms: |
Diandrochloa diarrhena (Schult.) Henry Diandrochloa diplachnoides (Steud.) Henry Diandrochloa japonica (Thunb.) Henry Diandrochloa namaquensis (Nees ex Schrad.) De Winter Eragrostis depauperata Andersson Eragrostis diarrhena (Schult.) Steud. Eragrostis diplachnoides Steud. Eragrostis hochstetteri Steud. Eragrostis interrupta auct. non (R. Br.) P. Beauv. Eragrostis interrupta var. diplachnoides (Steud.) Stapf ex Hook.f. Eragrostis interrupta var. koenigii Stapf ex Hook.f. Eragrostis interrupta var. namaquensis (Nees ex Schrad.) T. Durand & Schinz Eragrostis interrupta var. tenuissima Stapf ex Hook.f. Eragrostis interrupta var. diarrhena (Schult.) Stapf ex Hook.f. Eragrostis leprieurii Steud. Eragrostis namaquensis var. diplachnoides (Steud.) Clayton Eragrostis namaquensis var. robusta Stapf Eragrostis namaquensis Nees ex Schrad. Eragrostis tenuissima Schrad. ex Nees Poa diandra Roxb. Poa diarrhena Schult. Poa sporoboloides A. Rich. Poa tenella R. Br. Poa tenellula Kunth Roshevitzia diplachnoides (Steud.) Tzvelev Sporobolus confertiflorus A. Rich. Vilfa confertiflora (A. Rich.) Steud. |
| Common names: | |
| Frequency: | |
| Status: | Native |
| Description: |
Robust caespitose annual; culms up to 165 cm tall, erect, often branched below, glabrous at the nodes, eglandular; leaf sheaths eglandular; ligula a short but distinct membrane with fimbriate margin; leaf laminas 3–26 cm × 1–7 mm, linear, flat or with involute margins, glabrous, eglandular.Panicle 9–60 cm long, linear to lanceolate or narrowly ovate, contracted or spreading, the spikelets evenly distributed but often crowded on short pedicels less than 1 mm long, the primary branches not in whorls, terminating in a fertile spikelet, glabrous in the axils, eglandular.Spikelets 1–2.5 × c. 1 mm, ovate-oblong, lightly laterally compressed, 4–8-flowered, the florets disarticulating from the apex downwards, the rhachilla fragile; glumes subequal, 0.4–0.8 mm long, reaching to about the middle of the adjacent lemmas, lightly keeled, narrowly lanceolate to narrowly oblong-elliptic in profile, glabrous, acute or obtuse at the apex; lemmas 0.6–0.9 mm long, lightly keeled, elliptic to ovate in profile, membranous with distinct lateral nerves, ± appressed to the rhachilla, those in opposite rows scarcely imbricate, the rhachilla ± visible between them, greenish or purplish, glabrous, obtuse at the apex; palea glabrous on the flanks, the keels slender, wingless, glabrous or scaberulous; anthers 2, 0.1–0.4 mm long.Caryopsis 0.3–0.5 mm long, obovate. |
| Notes: | |
| Derivation of specific name: | japonica: of Japan |
| Habitat: | In a variety of habitats, usually near water. It may become a weed of cultivation, particularly in fields of rice or cotton. |
| Altitude range: | 170 - 1700 m |
| Flowering time: | |
| Worldwide distribution: | west tropical Africa eastwards through Arabia and India to China and Japan, and southwards to South Africa, Botswana, Malawi, Mozambique, Zambia, Zimbabwe |
| Mozambique distribution: | N,T,MS,GI |
| Growth form(s): | |
| Endemic status: | |
| Red data list status: | |
| Insects associated with this species: | |
| Spot characters: | Display spot characters for this species |
| Literature: |
Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 13. As Diandrochloa namaquensis Cope, T.A. (1999). Poaceae Flora Zambesiaca 10(2) Pages 87 - 89. Jackson, G. & Wiehe, P.O. (1958). An Annotated Check List of Nyasaland Grasses The Government Printer, Zomba, Nyasaland Page 40. As Eragrostis namaquensis and Eragrostis diplachnoides Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 104. Poilecot, P. (2007). Eragrostis species of Zimbabwe Éditions Quae,Versailles, France Pages 98 - 99. (Includes a picture). Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 137. |
Other sources of information about Eragrostis japonica:
Our websites:
Flora of Botswana: Eragrostis japonicaFlora of Burundi: Eragrostis japonica
Flora of Malawi: Eragrostis japonica
Flora of Zambia: Eragrostis japonica
Flora of Zimbabwe: Eragrostis japonica
External websites:
African Plants: A Photo Guide (Senckenberg): Eragrostis japonicaAfrican Plant Database: Eragrostis japonica
BHL (Biodiversity Heritage Library): Eragrostis japonica
EOL (Encyclopedia of Life): Eragrostis japonica
GBIF (Global Biodiversity Information Facility): Eragrostis japonica
Google: Web - Images - Scholar
iNaturalist: Eragrostis japonica
IPNI (International Plant Names Index): Eragrostis japonica
JSTOR Plant Science: Eragrostis japonica
Mansfeld World Database of Agricultural and Horticultural Crops: Eragrostis japonica
Plants of the World Online: Eragrostis japonica
Tropicos: Eragrostis japonica
Wikipedia: Eragrostis japonica
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