Pollination in RafflesiaBy flies/mites Dispersal of seeds in RafflesiaBy Elephant Smallest parasiteArceuthobium minutissimum — It lives in stem of Pinus, Rootless plantsBalanophora, Utricularia, Ceratophylium, Woiffia Plantless rootsplants have only roots to perform assimilation/growth/reproduction e.g. Sapria, Podostemum, Arceuthobium, Rafflesia Scindapsus (family Araceae)First terrestrial and then becomes epiphyte Arachis hypogea (Ground nut)Flowering occurs outside soil and after fertilization, ovaries go into soil where fruit formation occurs. It is called Geocarpy and is due to auxin action. Plant with Broadest leavesVictoria amazonica, (Amazon lily) leaf diameter 1.5 to 1.8 m Plant with Longest leafRaphia vinifera (10—15 m) Largest (Tallest) angiospermEucalyptus regnans (114 m) Tallest GymnospermSequoiadenron sempervirens ( = Sequoia gigantea) Douglosfir or Californian red wood tree Largest flowerRafflesia arnoldi ( 1 mt in dia, wt 7 kg) It is a root parasite on Tetrastigma roots Largest inflorescenceAmorphophallus titanum (5.5 m) may be upto 12 m in Agave Largest cotyledonsCapsella bursa pestoris (Shepherd’s purse) Biggest fruitLodoicea maldivica (Double coconut wt 6 kg) Largest diameter of a treeTaxodium mucronatum (100—125 ft) Cestanea (167 feet) Strongest wood used to keep mummiesTaxodium mucronatum (a gymnosperm) Maximum number of chromosomes, plantOphioglossum reticulatum (2n = 1262) AnimalAulacantha Radiolarians (2n = 1600) Smallest Archegonium is found inAngiosperms Largest Archegonium is found inMosses Smallest gametophyte plantChiamydomonas Largest gametopilytic plantDasownia Smallest pollen grain (2.5 t)Myosotis Largest pollen grain (250 j.t)Mirabilis Biggest ovuleCycas thourasii (7 cm in length) Biggest spermCycas Biggest eggCycas Largest seedLodoicea maidivica Maximum number of chromosomes in AngiospérmsPoa litorosa 2n = 266 Smallest chromosomeAn alga (0.025 rim) Largest chromosomeTrillium govanianuin (30 jim) Minimum number of chromosomes - PlantMucor, Porphyra (n = 2) Minimum number of chromosomes - AnimalAscaris (2n = 2) Highest yielding cereal (grain) cropMaize Largest and widest cultivated cropRice (Oryza sativ) Most advanced familyCompositae in dicots and gramineae in monocots Billiards ball is madefrom vegetable (Ivory) Palm (Phvtelephas microcarpa) Lightest woodBalsa (Ochrorna Pyramidale) sp. gr. 00444 Heaviest wood of worldGuaicum officinale ( sp. gr. I .49 wt. 93 lb/cubic feet Fire proof wood (wood without resin)Sequoia dendron Maximum life span of a treeMacrozamia (10000 years), Dracaena (8000 years) Largest spreading treeFicus bengulensis Largest leaf in diameterVictoria arnazonica (V. regia) Amazon lily dia. (5—6 ft) Longest leafRaphia vinifera 30—50 ft Longest Botanic Garden of WorldRoyal Botanic Garden, Kew, England First Plant taxonomistCaesalpinio World’s largest herbariumRoyal Botanic Garden, Kew, England << Previous