Poaceae

Anthenantia P.Beauv.

First published in Ess. Agrostogr.: 48 (1812)
This genus is accepted
The native range of this genus is Tropical & Subtropical America.

Descriptions

nonem

Morphology General Habit
Perennial. Rhizomes short. Culms 70-90-110 cm long. Ligule a ciliolate membrane.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-3.5-4 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 3-3.5-4 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume obovate; membranous; without keels; 5 -veined. Upper glume surface villous. Upper glume apex obtuse.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret obovate; membranous; 5 -veined; obtuse. Fertile lemma ovate; cartilaginous; much thinner on margins; without keel; 3 -veined. Lemma apex acute. Palea gaping; 1 length of lemma; cartilaginous; 2 -veined.
Morphology Reproductive morphology Flowers
Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; orbicular; isodiametric. Embryo 0.5 length of caryopsis.
Distribution
North America.
[GB]

nonem

Morphology General Habit
Perennial. Rhizomes absent (1), or elongated (1). Culms erect; 60-77.5-100 cm long. Ligule a ciliolate membrane.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open. Spikelets appressed (1/1); solitary. Fertile spikelets pedicelled. Pedicels clavate (1/1); tip cupuliform (1/1).
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate (1), or elliptic (1); dorsally compressed; 3-3.625-4 mm long; falling entire.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate (1), or elliptic (1); dorsally compressed; 3-3.625-4 mm long; falling entire.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes one the lower absent or obscure, or two (1); reaching apex of florets; thinner than fertile lemma. Lower glume linear (1/1); 0.15 length of upper glume; hyaline (1/1). Upper glume lanceolate; membranous; without keels; 3-4 -veined (1), or 5 -veined, or 6-7 -veined (1). Upper glume lateral veins without ribs (1), or ribbed (1). Upper glume surface pilose (1), or villous (1). Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret linear (1), or lanceolate (1); membranous; 3-4 -veined (1), or 5 -veined, or 6-7 -veined (1); without ribs (1), or ribbed (1); acute. Fertile lemma ovate; dorsally compressed; cartilaginous; much thinner above; much thinner on margins; without keel. Lemma lateral veins obscure (1/1). Lemma margins eciliate (1), or ciliolate (1). Lemma apex acute. Palea gaping; 1 length of lemma; cartilaginous.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
North America, or South America (1).
[GB]

Sources

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0