The ponderosa lemon is thought to be a lemon X citron hybrid. It is similar to a lemon but the fruit is much larger with a thick bumpy peel and no pointed tip. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) â Rhyniophyta - rhyniophytes â Zosterophyllophyta - zosterophylls Lycopodiophyta - clubmosses â Trimerophytophyta - trimerophytes Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) â Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also called angiosperms) are the dominant and most familiar group of land plants. ... Orders See text. ... Orders See text The botanical Sub-class Rosidae is a large dicotyledonous flowering plant taxon, containing over 58,000 species grouped within 108 families. ... Families See text Sapindales is a botanical name for an order of flowering plants. ... Genera About 160 genera; selected important genera: Amyris - West Indian Sandalwood Choisya - Mexican orange Citrus - Citrus Dictamnus - Burning-bush Fortunella - Kumquat Melicope - Corkwood, Alani Murraya - Curry tree Phellodendron - Cork-trees Poncirus - Trifoliate orange Ptelea - Hoptree Ruta - Rue Skimmia - Skimmia Tetradium (Euodia) - Euodias Zanthoxylum - Toothache trees Rutaceae is a family of... Species & major hybrids Species Citrus aurantifolia - Key lime Citrus maxima - Pomelo Citrus medica - Citron Citrus reticulata - Mandarin & Tangerine Major hybrids Citrus Ãsinensis - Sweet Orange Citrus Ãaurantium - Bitter Orange Citrus Ãparadisi - Grapefruit Citrus Ãlimon - Lemon Citrus Ãlatifolia - Persian lime See also main text for other hybrids Citrus is a common term... In biology, binomial nomenclature is the formal method of naming species. ... Carolus Linnaeus, also known after his ennoblement as , (May 23, 1707 â January 10, 1778), was a Swedish botanist, physician and zoologist who laid the foundations for the modern scheme of nomenclature. ... Binomial name Citrus Ã limon (L.) Burm. ... Citron is a citrus fruit of the species Citrus medica. ...
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