Complex sentence: The leaves are needle-like, 5-20 mm long, strongly flattened in cross-section, mid to dark green above, and with two broad bands of white stomata below with only a narrow green midrib between the bands.
Split into simpler sentences: The leaves are needle-like, 5-20 mm long, strongly flattened in cross-section, mid to dark green on top. The underside has two distinctive white bands of stomata with only a narrow green midrib between the bands.