Tallest Tree: Sequoia gigantea
Largest Seed: Lodoicea Seychellarum (Double Coconut)
Smallest Seed: Orchids (Diameter 0.1 mm)
Largest Fruit: Lodoicea Maldivea
Smallest Flower: Wolffia
Largest Flower: Rafflesia arnoldi (8-10 kg)
Smallest Gymnosperm: Zamia pygmaea
Smallest Angiosperm: Wolffia microscopica
Tallest Angiosperm: Eucalyptus (Australian eucalyptus)
Largest Fern: Alsophila excelsa (Tree fern)
Lightest Wood: Ochroma pyramidale
Largest Grass: Bamboosa
Smallest Pteridophyte: Azolla (Water fern)
Largest Marine Algae: Macroaystis macrocapra
Largest Leaf: Victoria regia (Angiosperm)
Smallest Mycoplasma: Mycoplasma gallisepticum
Largest Herb: Musa paradisiaca
Smallest Bacteria: Dialister pheumosintes
Largest Unicellular Organism: Acetabularia (Marine green algae)
Minimum Number of Chromosomes: Haplopappus gracilis (2n=4)