Karatophyllum bromelioides L.D. Gomez revisited: a probable fossil CAM bromeliad.
PREMISE OF THE STUDY: The fossil leaf Karatophyllum bromelioides L. D. Gómez found in Costa Rica was proposed by Gómez (1972) to belong to the Bromeliaceae and to date from the middle Tertiary. If the age and affinity of this specimen were proven to be correct, it would constitute the oldest record of this large and ecologically diverse monocotyledonous family. KEY RESULTS: Morphological features of the fossil (leaf dimensions, marginal spines, cuticular traces) indicate a close affinity wit...Expand abstract
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