Family:
Poaceae Barnhart
Genus:
Oryza L.

Oryza eichingeri Peter

This species is accepted, and its native range is Ivory Coast to W. Central & E. Tropical Africa, Sri Lanka.

[GB]
Morphology General Habit
Perennial; caespitose. Rhizomes short. Butt sheaths papery; pallid. Culms erect; 60-100 cm long; 2-3 mm diam. Culm-nodes constricted; pallid, or brown. Leaf-sheaths narrower than blade at the collar; keeled; smooth; glabrous on surface. Leaf-sheath oral hairs ciliate. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 1-3 mm long; entire; truncate. Leaf-blades 10-25 cm long; 3-10 mm wide; glaucous. Leaf-blade surface smooth, or scabrous. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle antrorsely scabrous above. Panicle open; lanceolate; 10-25 cm long. Primary panicle branches ascending. Panicle branches angular; scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels linear; angular; scaberulous; tip cupuliform.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic (narrowly); laterally compressed; rostrate; 4.5-5.8 mm long; 1.5-1.8 mm wide (3 times longer than wide); falling entire. Spikelet callus glabrous; base truncate; attached transversely.
Fertile
Spikelets comprising 2 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic (narrowly); laterally compressed; rostrate; 4.5-5.8 mm long; 1.5-1.8 mm wide (3 times longer than wide); falling entire. Spikelet callus glabrous; base truncate; attached transversely.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes both absent or obscure.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets similar; barren; without significant palea. Lemma of lower sterile floret lanceolate; 0.2 length of spikelet; membranous; 1 -veined; without lateral veins; acute. Lemma of upper sterile floret lanceolate; 1 length of lower sterile floret; membranous. Fertile lemma elliptic; laterally compressed; 4.5-5.8 mm long; coriaceous; keeled; 5 -veined. Lemma midvein spinulose. Lemma surface reticulate; hispidulous. Lemma margins involute. Lemma apex rostrate; awned; 1 -awned. Principal lemma awn 5-20 mm long overall. Palea elliptic; 1 length of lemma; coriaceous; 3 -veined; 1-keeled. Palea keels scabrous. Palea apex acute.
Morphology Reproductive morphology Flowers
Lodicules 2; lanceolate; membranous. Anthers 6. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Disseminule comprising a floret.
Distribution
Africa: west tropical, west-central tropical, and east tropical. Asia-tropical: India.
Reference
Oryzeae. WDC.

[FWTA]

Gramineae, W. D. Clayton. Flora of West Tropical Africa 3:2. 1972

Morphology General Habit
Culms slender, firm
Ecology
Damp places in forest undergrowth.

[FTEA]

Gramineae, W. D. Clayton, S. M. Phillips & S. A. Renvoize. Flora of Tropical East Africa. 1974

Morphology General Habit
Perennial.
Morphology Culms
Culms erect, 60–100 cm. high, hard, generally less than 3 mm. in diameter.
Morphology Leaves
Leaf-blades up to 25 cm. long and 1 cm. broad; ligule less than 3 mm. long, hard, yellowish, not readily splitting, glabrous.
Morphology Reproductive morphology Inflorescences
Panicle contracted with ascending branches.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets narrowly elliptic, 4.5–5.8 mm. long and 1.5–1.8 mm. broad (3 times longer than broad), hispidulous; sterile lemmas narrowly triangular, acuminate; awn usually 1–2 cm. long, slender and flexuous, scaberulous.
Habitat
Swampy soils in forest shade; sea-level to 1200 m.
Distribution
K5 T1 T3 T6 U1 U2 U4

Doubtfully present in:

Central African Repu

Native to:

Congo, Ivory Coast, Kenya, Sri Lanka, Tanzania, Uganda, Zaïre

Oryza eichingeri Peter appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Mar 1, 1938 Dummer, R. [2777], Uganda K000345476 Yes
Ferguson, W. [2876], Sri Lanka Oryza rhizomatis K000032076 Unknown type material Yes
Ferguson, W. [2876], Sri Lanka Oryza rhizomatis K000032077 Unknown type material Yes
Balendira, S. [105660], Sri Lanka Oryza rhizomatis K000032078 holotype Yes
s.coll. [s.n.], Sri Lanka Oryza rhizomatis K000848941 Yes
s.coll. [2876], Sri Lanka Oryza rhizomatis K000848940 Yes

First published in Repert. Spec. Nov. Regni Veg. Beih. 40(1 Anh.): 74 (1930)

Accepted by

  • Clayton, W.D. (1970). Gramineae. Flora of Tropical East Africa 1: 1-176.
  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
  • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

Literature

Flora of West Tropical Africa

  • Aké Assi, Contrib. 2: 281.
  • Tateoka in Bot. Mag. Tokyo 78: 156, 198
  • in Fedde Rep., Beih. 40, 1, Anhang: 74 (1930)

Kew Backbone Distributions

  • Clayton, W.D. (1970). Gramineae. Flora of Tropical East Africa 1: 1-176.
  • Dassanayake (ed.) (1994). A Revised Handbook to the Flora of Ceylon 8: 1-458. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
  • Hepper, F.N. (ed.) (1972). Flora of West Tropical Africa, ed. 2, 3(2): 277-574.

Flora of Tropical East Africa

  • A.V. Bogdan, A Revised List of Kenya Grasses p. 35 (1958).
  • D.M. Napper, Grasses of Tanganyika: 49 (1965).
  • Eggeling, Ann. list grasses Ug.: 29 (1947).
  • K.W. Harker & D.M. Napper, An Illustrated Guide to the Grasses of Uganda p. 43 (1960).
  • Peter, Flora von Deutsch-Ostafrika 1: 251, Anh.: 74 (1930).
  • Robyns, Flore des Spermatophytes du Parc National Albert 3: 205 (1955).
  • Tateoka in Bot. Mag. Tokyo 78: 156 (1965).

  • Flora of Tropical East Africa

    Flora of Tropical East Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Flora of West Tropical Africa

    Flora of West Tropical Africa
    http://creativecommons.org/licenses/by-nc-sa/3.0

  • GrassBase - The Online World Grass Flora

    http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0