Cryptocoryne lutea Alston was described as a species from Sri Lanka in 1931 and is now regarded as a synonym of C. walkeri from central Sri Lanka.12 Its former main character, the development of the collar of the inflorescence, no longer separates it from this species because of gradual transitions.3 In the trade it often still bears the old name, which stands for different plants: deep purple-red ones as well as green-brown ones with streaked markings.1
The submersed leaves have fairly long stalks and blades 8–12 × 2–3 cm in size, finely wavy along the lower margin, dark green above and green to reddish below.1 It differs from C. wendtii and C. beckettii in its somewhat stiffer, upright growth, but propagates more slowly.3 It suits groups in the foreground and midground.1
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