1. Family: Poaceae Barnhart
    1. Phyllorachis Trimen

      1. This genus is accepted, and its native range is Tanzania to S. Tropical Africa.

    [FZ]

    Gramineae, E. Launert. Flora Zambesiaca 10:1. 1971

    Inflorescences
    Inflorescence as described for the tribe; axillary inflorescences all female; racemes short, usually not more than 1-2; spikelets longer than the ones of the terminal inflorescences, with the elongated stigmas protruding from the subtending leaf-sheaths, the terminal one hermaphrodite; the lowermost spikelet of each raceme female, the following male, sometimes reduced spikelets present; rhachilla not extended.
    Spikelets
    Female spikelets: inferior glume subulate or even setaceous; the superior narrowly ovate to oblong, up to 1/2 the length of the spikelet, 5-9-nerved; lemma of the inferior floret embracing the superior floret, dorsally with a longitudinal furrow, rather rigid, many-nerved; lemma of the superior floret 11-many-nerved, membranous to thinly coriaceous, its palea 8-12-nerved. Male spikelets; inferior glume rather narrow, almost subulate, acute; the superior 1-nerved, ovate-oblong, up to 2/3 the length of the spikelet; lemma of the inferior floret 3-nerved, coriaceous; lemma of the superior floret 5-7-nerved, thinly coriaceous, keeled, its palea 2-nerved; stamens 6.
    Fruits
    Caryopsis free, elliptic-oblong in outline, with a rather shallow longitudinal furrow; embryo minute; hilum linear, almost as long as the caryopsis.
    Habit
    Perennial grasses, sometimes of shrubby habit, with branched slender culms.
    Ligules
    Ligule small, ciliate.
    [GB]

    nonem

    Habit
    Perennial. Culms decumbent; 60-120 cm long. Ligule a ciliolate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate. Leaf-blade venation with obscure cross veins.
    Inflorescences
    Monoecious; with male and female spikelets in the same inflorescence. Inflorescence composed of racemes; terminal and axillary. Racemes borne along a central axis; in a unilateral false spike; appressed; lanceolate; bearing few fertile spikelets; bearing 1 fertile spikelets on each. Central inflorescence axis foliaceous; tip subulate. Rhachis deciduous from axis; broadly winged; terminating in a barren extension; extension flattened. Sexes segregated; on bisexual branches; with male above. Spikelets in threes. Fertile spikelets sessile; 1 in the cluster. Male spikelets sessile; 2 in a cluster.
    Spikelets
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; gibbous; 10-16 mm long; falling entire; deciduous with accessory branch structures. Male spikelets similar to female but less developed. Male spikelet glumes 2.
    Fertile
    Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets ovate; laterally compressed; gibbous; 10-16 mm long; falling entire; deciduous with accessory branch structures.
    Glume
    Glumes shorter than spikelet; thinner than fertile lemma. Lower glume subulate. Upper glume oblong; 0.3-0.5 length of adjacent fertile lemma; membranous; 1-keeled; 5-9 -veined. Upper glume apex acute.
    Florets
    Basal sterile florets barren; without significant palea. Lemma of lower sterile floret ovate; coriaceous; 15 -veined; sulcate; acute. Fertile florets female. Fertile lemma ovate; chartaceous; keeled; 11-17 -veined. Lemma margins involute. Lemma apex caudate. Palea 1 length of lemma; chartaceous; 8-12 -veined.
    Flowers
    Lodicules 2; membranous. Anthers 6. Stigmas 2.
    Fruits
    Caryopsis with adherent pericarp; linear; laterally compressed; biconvex. Hilum punctiform.
    Male
    Male spikelets similar to female but less developed. Male spikelet glumes 2.
    Distribution
    Africa.
    [FTEA]

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

    Culms
    Culms slender, stiff, branched upwards
    Male
    Male spikelets: lower glume subulate to oblong; upper glume narrowly ovate, up to one-third the length of the spikelet, 1-nerved; lower lemma coriaceous, 3-nerved; upper lemma keeled, membranous to thinly coriaceous, 5–7-nerved; palea 2-nerved; stamens 6
    Spikelets
    Female spikelets: lower glume subulate or setiform; upper glume ovate-oblong to oblong, one-third to half the length of the spikelet, 5–9-nerved; lower lemma about as long as the spikelet, nearly enclosing the upper floret, longitudinally grooved down the middle of the back, becoming tough and rigid, many-nerved; upper lemma as long as the spikelet, thinly coriaceous, 11–17-nerved; palea 8–12-nerved Male spikelets: lower glume subulate to oblong; upper glume narrowly ovate, up to one-third the length of the spikelet, 1-nerved; lower lemma coriaceous, 3-nerved; upper lemma keeled, membranous to thinly coriaceous, 5–7-nerved; palea 2-nerved; stamens 6
    Female
    Female spikelets: lower glume subulate or setiform; upper glume ovate-oblong to oblong, one-third to half the length of the spikelet, 5–9-nerved; lower lemma about as long as the spikelet, nearly enclosing the upper floret, longitudinally grooved down the middle of the back, becoming tough and rigid, many-nerved; upper lemma as long as the spikelet, thinly coriaceous, 11–17-nerved; palea 8–12-nerved
    Inflorescences
    Axillary inflorescences ♀, of 1 or 2 1-spiculate racemes borne upon a slender axis; spikelets narrower and longer than those of the terminal inflorescence; stigmas long, projecting from the mouth of the subtending leaf-sheath. Terminal inflorescence bisexual; racemes 3–4-spiculate, the lowest spikelet ♀ and the rest ♂ (vestigial spikelets may also be present); spikelets without a rhachilla-extension

    Distribution

    Native to:

    Angola, Malawi, Mozambique, Tanzania, Zambia, Zaïre

    Phyllorachis Trimen appears in other Kew resources:

    First published in J. Bot. 17: 353 (1879)

    Literature

    Flora Zambesiaca
    • in Journ. of Bot. 17: 353 (1879).
    Flora of Tropical East Africa
    • C. E. Hubbard in Hook., Ic. Pl. 34, t. 3386 (1939)
    • in J.B. 17: 354 (1879)

    Sources

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

    Flora of Tropical East Africa
    Flora of Tropical East 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

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2018. 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 2018. 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