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Leaf fully developed at flowering, 150–350 × 10–15 mm. Flower stem 300–600 mm tall, slender to stout, 5–15-flowered. Flowers lasting 2–4 days, 18–22 × 12–16 mm; sepals and petals pale green with red stripes; labellum with reddish purple to purple papillae. Dorsal sepal erect, 9–12 × 6–7 mm, spreading above column. Lateral sepals widely divergent, 9–12 × 5–6 mm. Petals 6–8 × 4–5 mm, spreading. Labellum curved in profile, 14–16 × 5–6 mm, narrowly elliptic in outline; basal part covered with smooth, shiny, raised, blue metallic plates; central part covered with bristly, eglandular and glandular, reddish purple papillae; apical part with a naked, curved, sinuous, glandular tail 4–5 × 1 mm; labellum margins with numerous, long, narrow, greenish, eglandular and glandular lobes to 4 mm long. Column 5–6 × 4–4.5 mm, green, with 2 purple sham eyes, lacking a connecting ridge.
Leaf fully developed at flowering, 150–250 × 7–15 mm, dark green. Flower stem 400–900 mm tall, stout, 2–15-flowered. Buds green. Flowers lasting 2–5 days, 22–25 × 14–18 mm, sepals and petals green with reddish lines; labellum papillae brownish purple; marginal lobes greenish. Dorsal sepal erect, 9–12 × 4–6 mm. Lateral sepals widely divergent, 8–12 × 3–4 mm, apex acuminate. Petals porrect to spreading, 5–7 × 3–4 mm, asymmetrical, acuminate. Labellum curved in profile, 11–15 × 5–6 mm, ovate in outline; basal part with 2 shiny, metallic blue plates; central part with bristly, brownish purple papillae to 4 mm long; apical part with a densely glandular, tapered tail 3–4 × 1 mm; labellum margins with numerous crowded, linear, yellowish green lobes to 4 mm long, most lobes eglandular. Column 5–6 × 4 mm, with 2 purple sham eyes, lacking a connecting ridge.
Plant when well developed stout and to 60–70 cm. tall. Bracts, racemes, sepals and petals much as in C. paludosus. Labellum proportionately smaller; ligulate apex short and sinuous; disc broad with shorter and less crowded processes; base bluish with several longitudinal plate-like calli. Column-wings each with one well-defined, us. dark gland or callus near base.
An orchid.
