1. Ligule pits are present on the adaxial surface of vegetative leaves.

2. Beaked panicgrass has a very short membranous ligule that is irregular shaped

3. The first photographs show a collar with the blade (lamina), Auricles, ligule, and leaf sheath

4. Both smooth Crabgrass and large Crabgrass are characterized by a tiny, membrane-like appendage (ligule) at the base of the leaf on the upper surface

5. Electron microscopy: Samples of the leaf, Auricles, ligule and inflorescences were fixed in a 2.5% glutaraldehyde and 2% parafonnaldehyde solution in a 0.1 M sodium phosphate buffer, pH 7.4 (Karnovsky 1965) and were rinsed with the buffer solution.

6. Blade (lamina): part of the leaf above the collar collar: a thin band of meristematic tissue at the junction of the leaf blade (lamina) and the sheath Auricles: claw appendages at the base of the blade of some grasses (some grasses do not have Auricles) ligule: outgrowth at the inner junction of the

7. Leaf: ligule 1.5--3 mm, truncate to obtuse, decurrent to sheath, toothed; blade 1--5 mm, 1--2 mm wide, flat or folded.Inflorescence: 4--14 cm, 0.5--1.5 cm wide, narrow; branches Appressed, loosely flowered.Spikelet: in lower branch axils cleistogamous, enclosed by tightly rolled sheath; glumes 1--2 mm, obtuse to acute; lemma 4.5--6 mm, hairs at base short