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Grass Illustrations Oryza | Zea
Tiller - The shoot developing from the axillary bud meristem
Root - An axial system which is usually underground and more or less positively geotropic, does not bear leaves and only rarely shoots, is endogenous in origin, indeterminate in growth and often with secondary thickening
Stem - An axial system which is usually above ground and more or less negatively geotropic, bears leaves and buds, is exogenous in origin, often indeterminate in growth and with secondary thickening
Node - The level (transverse plane) of a stem at which one or more leaves and associated axillary bud(s) arise
Internode - The portion of a stem between the level of insertion of two successive leaves, leaf pairs or leaf whorls, or branches of an inflorescence, i.e. between two nodes
Leaf - Commonly thought of as one of the three basic parts of the seed plant body, a structure usually of determinate growth, without secondary thickening, and of superficial origin, often flattened and photosynthetic in part, and in the axil of which is found a bud
Leaf blade - The blade of a leaf, usually dorsiventrally flattened, and expanded
Leaf sheath - Any tubular portion of the leaf surrounding the stem, as in the Poaceae
Leaf collar - A thin band of intercalary meristematic tissue at the junction of the leaf blade (lamina) and the leaf sheath found in grasses
Panicle - The grouping or arrangement in which flowers are borne on a plant
Flag leaf - The last mature leaf before the inflorescence in a cereal crop plant
Ligule - A membranous or hairy appendage on the adaxial/upper surface of a leaf, at the junction between sheath and blade, especially in grasses
Auricle - Outgrowth at the base of a leaf blade that may wrap around the stem
Leaf blade - The blade of a leaf, usually dorsiventrally flattened, and expanded
Leaf sheath - Any tubular portion of the leaf surrounding the stem, as in the Poaceae
Leaf collar - A thin band of intercalary meristematic tissue at the junction of the leaf blade (lamina) and the leaf sheath found in grasses
Panicle - The grouping or arrangement in which flowers are borne on a plant
Flag leaf - The last mature leaf before the inflorescence in a cereal crop plant
Peduncle - The stalk of an inflorescence below the lowest inflorescence node
Rachis - The central supporting structure around which flowers are borne
Primary branch - The extent of primary branching usually sets the tone for shape and compactness of the inflorescence (panicle)
Rachilla - The axis of the spikelet, above the glumes
Spikelet - Ultimate and congested inflorescence branch of the grasses
Spikelet - Ultimate and congested inflorescence branch of the grasses
Pedicel - Basal part of the ultimate branch of the inflorescence
Rudimentary glume - A "bract" in the inflorescence of a grass, sedge or similar plant
Rachilla - The axis of the spikelet, above the glumes
Sterile lemma - A bract in the position of a lemma, but not enclosing floral organs
Floret - Small flowers, esp. of the spikelets of Poaceae and Cyperaceae and the capitula of Asteraceae
Lemma - In a grass floret, the lower of two bracts enclosing a flower
Palea - In a grass floret, the upper of the two bracts enclosing a flower
Awn - A long bristle-like appendage found on the tip or back of various parts of the grass spikelet
Stamen - A microsporophyll bearing one or more microsporangia
Anther - The pollen-bearing part of a stamen of a grass floret
Filament - The stalk of the stamen of a grass floret
Pistil - Collectively the carpels of a flower
Stigma - The apical part of a carpel of a grass floret on which the pollen germinates
Ovary - The basal portion of a carpel that encloses the ovule(s) in a grass floret