1. Family: Poaceae Barnhart
    1. Aulonemia Goudot

      1. This genus is accepted, and its native range is S. Mexico to S. Tropical America.

    [GB]

    nonem

    Habit
    Perennial. Rhizomes absent (2), or short (42); pachymorph (42/42). Culms erect (20/30), or geniculately ascending (1/30), or decumbent (1/30), or arching (1/30), or leaning (3/30), or scandent (12/30); 30-378.7-6700 cm long; woody. Culm-internodes alternately elongated and bunched (1/1); terete. Culm-nodes swollen (3/3); without obvious supra-nodal ridge (20/24), or with distinct supra-nodal ridge (4/24). Lateral branches suffrutescent (2), or dendroid (42). Branch complement one (25/29), or two (2/29), or three (1/29), or several (1/29), or many (3/29); solitary (20/22), or in a clump (2/22); at the node (43), or subtended by a bare patch above the node (1); with subequal branches (1/2), or 1 branch dominant (1/2); as thick as stem (6/6). Culm-sheaths persistent (4/8), or tardily deciduous (2/8), or deciduous (2/8); without auricles (3/5), or auriculate (2/5). Culm-sheath blade inconspicuous (1/10), or linear (1/10), or lanceolate (7/10), or triangular (2/10); constricted at base (1/2), or narrower than sheath (1/2). Leaf-sheath auricles absent (37), or erect (6), or falcate (3). Ligule an eciliate membrane (36), or a ciliolate membrane (4), or a ciliate membrane (1), or absent (4). Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades persistent (40), or deciduous at the ligule (4); linear (2), or lanceolate (35), or oblong (3), or ovate (17); herbaceous (42), or coriaceous (2); stiff (2), or firm (42); without exudate (43), or viscid (1). Leaf-blade midrib indistinct (1/1). Leaf-blade venation without cross veins (37), or with distinct cross veins (7). Leaf-blade margins cartilaginous (7/7).
    Inflorescences
    Synflorescence on the same culm as leaves (41/42), or on a separate leafless culm (1/42). Inflorescence a panicle (41/42), or composed of racemes (1/42); terminal (41/42), or terminal and axillary (1/42); exserted (41/42), or embraced at base by subtending leaf (1/42). Panicle open (39/41), or contracted (2/41). Racemes single (1/1); paucilateral (1/1). Rhachis angular (1/1). Spikelet packing broadside to rhachis (1/1). Spikelets appressed (1/2), or ascending (1/2), or spreading (1/2); solitary (42/42). Fertile spikelets sessile (1/42), or pedicelled (42/42). Pedicels filiform (9/9).
    Spikelets
    Spikelets comprising 1 basal sterile florets (11/13), or 2-4 basal sterile florets (1/13); 1-6-23 fertile florets; with diminished florets at the apex (42/42). Spikelets linear (31/41), or lanceolate (3/41), or oblong (9/41); laterally compressed (30/42), or subterete (12/42); 8.3-26.17-70 mm long; breaking up at maturity (42/42); disarticulating below each fertile floret (42/42). Rhachilla internodes brief up to lowest fertile floret (41/42), or elongated below proximal fertile floret (1/42); glabrous (40/42), or pubescent (3/42). Floret callus brief (39/42), or evident (3/42).
    Fertile
    Spikelets comprising 1 basal sterile florets (11/13), or 2-4 basal sterile florets (1/13); 1-6-23 fertile florets; with diminished florets at the apex (42/42). Spikelets linear (31/41), or lanceolate (3/41), or oblong (9/41); laterally compressed (30/42), or subterete (12/42); 8.3-26.17-70 mm long; breaking up at maturity (42/42); disarticulating below each fertile floret (42/42). Rhachilla internodes brief up to lowest fertile floret (41/42), or elongated below proximal fertile floret (1/42); glabrous (40/42), or pubescent (3/42). Floret callus brief (39/42), or evident (3/42).
    Glume
    Glumes two (38/42), or several (6/42); persistent (42/42); shorter than spikelet (42/42); thinner than fertile lemma (38/42), or similar to fertile lemma in texture (4/42). Lower glume lanceolate (30/41), or ovate (12/41); 0.33-0.616-1 length of upper glume; membranous (40/41), or chartaceous (1/41); without keels (40/40); 1 -veined (16/36), or 2 -veined (5/36), or 3 -veined (21/36), or 4 -veined (8/36), or 5 -veined (7/36), or 6 -veined (1/36), or 7 -veined (4/36). Lower glume lateral veins absent (16/42), or obscure (3/42), or distinct (28/42). Lower glume surface glabrous (34/42), or puberulous (4/42), or pubescent (4/42). Lower glume apex obtuse (5/39), or acute (31/39), or acuminate (2/39), or attenuate (1/39), or setaceously attenuate (1/39); muticous (26/41), or mucronate (7/41), or awned (10/41). Upper glume linear (1/42), or lanceolate (20/42), or ovate (22/42); 0.3-0.5358-0.75 length of adjacent fertile lemma; membranous (41/41); without keels (39/41), or 1-keeled (2/41), or 2-keeled (1/41); 3 -veined (10/35), or 4 -veined (7/35), or 5 -veined (19/35), or 6 -veined (11/35), or 7 -veined (22/35), or 8 -veined (1/35), or 9-10 -veined (2/35), or 11 -veined (3/35). Upper glume surface glabrous (32/42), or puberulous (6/42), or pubescent (6/42). Upper glume apex entire (42/42), or dentate (1/42); 2 -fid (1/1); obtuse (14/39), or acute (21/39), or acuminate (5/39), or setaceously attenuate (1/39); muticous (30/42), or mucronate (4/42), or awned (10/42); 1 -awned (10/10).
    Florets
    Basal sterile florets barren (13/13); with palea (2/13), or without significant palea (11/13). Lemma of lower sterile floret lanceolate (6/13), or elliptic (1/13), or oblong (1/13), or ovate (5/13); membranous (2/2); 3-4 -veined (2/10), or 5 -veined (6/10), or 6 -veined (3/10), or 7 -veined (7/10), or 8-9 -veined (4/10); obtuse (2/8), or acute (6/8); muticous (7/13), or mucronate (1/13), or awned (5/13). Fertile lemma lanceolate (24/42), or elliptic (2/42), or oblong (6/42), or ovate (11/42); chartaceous (34/42), or herbaceous (6/42), or coriaceous (2/42); without keel (42/42); 5 -veined (5/38), or 6 -veined (4/38), or 7 -veined (31/38), or 8 -veined (12/38), or 9 -veined (18/38), or 10-11 -veined (6/38), or 12-15 -veined (1/38). Lemma lateral veins obscure (2/2). Lemma surface smooth (38/42), or scaberulous (3/42), or scabrous (1/42); glabrous (25/42), or puberulous (12/42), or pubescent (6/42), or hirsute (1/42). Lemma margins eciliate (36/42), or ciliolate (3/42), or ciliate (3/42). Lemma apex obtuse (8/40), or acute (27/40), or acuminate (3/40), or setaceously attenuate (1/40), or apiculate (1/40); muticous (25/42), or pungent (1/42), or mucronate (5/42), or awned (14/42); 1 -awned (15/15). Principal lemma awn straight (19/19), or curved (1/19). Palea 0.8-0.9885-1.1 length of lemma; 2 -veined (3/7), or 3 -veined (1/7), or 4 -veined (4/7), or 6 -veined (1/7). Palea keels wingless (41/42), or winged (1/42); smooth (38/42), or scaberulous (1/42), or scabrous (3/42); eciliate (24/42), or ciliolate (14/42), or ciliate (4/42). Palea surface glabrous (36/42), or puberulous (1/42), or pubescent (5/42). Palea apex dentate (2/2). Apical sterile florets resembling fertile though underdeveloped (31/42), or distinct from fertile (11/42).
    Flowers
    Lodicules 3 (40/40); glabrous (24/40), or ciliate (16/40). Anthers 2 (1/41), or 3 (40/41). Stigmas 2 (38/38). Ovary unappendaged (41/42), or umbonate (1/42); glabrous (1/2), or pubescent all over (1/2).
    Fruits
    Caryopsis with adherent pericarp (33/33); oblong (2/3), or ovoid (1/3). Embryo 0.66 length of caryopsis. Hilum linear (1/1); 1 length of caryopsis.
    Distribution
    North America (1), or South America (43).

    Images

    Distribution

    Native to:

    Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Ecuador, Guyana, Mexico Gulf, Mexico Southeast, Mexico Southwest, Panamá, Peru, Venezuela

    Aulonemia Goudot appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Dusén, P. [16982], Brazil K000947548

    First published in Ann. Sci. Nat., Bot., sér. 3, 5: 75 (1846)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

    Sources

    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.
    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 2020. 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 2020. 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