| The leaves of ssp. beneolens are greenish, mostly linear to very-narrowly oblanceolate, and have a tendency to be ascending. |
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| The leaf laminae of Q. serrata were lanceolate to oblanceolate, 5-15 cm long and 1-3 cm wide. |
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| The upper regions of the stem have a characteristic square-shaped cross-section with long internodes separating whorls of elliptical to oblanceolate leaves. |
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| The plant is about 1 m high with oblanceolate green leaves, dentate at the top and marked with resinous points. |
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| Leaves are narrowly elliptical to oblanceolate and acute and have entire to slightly toothed margins. |
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| It is a medium to large size rosetophylous plant producing 75 to 150 leaves broadly to narrowly lanceolate to oblanceolate, thick-fleshy, light green to yellow green. |
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