| Culm solid vs. hollow | Hollow | Hollow | Solid, sometimes with a few diffuse air canals | Solid |
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| Midculm internode width (mm) | 1–3(–4) | 2–4 | 3–8 | 3–10 |
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| Girdle at the nodal line | Absent | Expanded into a corky downward pointed structure | Absent | Absent |
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| Fimbriae position | Erect | Erect | Erect | Effuse, spreading |
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| Fimbriae on the sheath margin | Absent | Absent | Present | Absent |
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| Fimbriae length (cm) | 0.05–4 | 0.15–0.25 | 2.5–6.5 | 0.8–2.5 |
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| Leaf blades dimensions (cm) | 5.1–21.5 × 0.7–3.1 | 4.6–15.6 × 0.8–3.2 | 13–27 × 2.1–5.3 | (7.5–)11–23 × 2.0–4.5 |
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| Color of leaf blades on the abaxial side | Uniformly green | Bluish glaucous with a conspicuous marginal green stripe | Uniformly green | Uniformly green |
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| Spikelets shape | Linear-lanceolate | Ellipsoid | Linear to linear-lanceolate | Linear to linearlanceolate |
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| Spikelets dimensions (cm) | 1.2–3.4 × 0.2–0.4 | 1.2–2 × 0.2–0.4 | 1.7–4.2 × 0.2–0.4 | 1.2–3.1 × 0.2–0.6 |
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| Glume I number of nerves | 3–5 | 1 | 7 | 5–6 |
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| Rachilla internode length (mm) | 3.8–5.2 | 2.8–5.2 | 5–8.5 | 4.2–4.9 |
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| Lemma length (mm) | 7.2–9.8, excluding the awn | ca. 9.2 | 8.5–12.8 | 9.0–10.5 |
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| Lemma apex | Obtuse, awned | Long acuminate, awnless | Acute, awnless | Acute, awnless |
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| Distribution (states of Brazil) | Bahia, Distrito Federal, Goiás, Minas Gerais, Paraná, Rio de Janeiro, Santa Catarina and São Paulo | Paraná | Espírito Santo and Minas Gerais | Bahia, Espírito Santo and Minas Gerais |
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