Isn't that a flower though?. What do you mean how many living species are there in Magnoliophyta?.
magnoliophyta
Sunflower is in Phylum: Magnoliophyta
The Phylum of an eucalyptus is Magnoliophyta
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The classification of rice is in the division of the magnoliophyta. The genus is Oryza and the species is Oryza sativa which is also its scientific name.
Typically in botany, Phylum is replaced with Division, which for this species is Division Magnoliophyta - Flowering plants as per plants.usda.gov
Magnoliophyta are also known as the flowering plants or angiosperms.
The phylum of a daphne is 'magnoliophyta' and the class is 'magnoliopside'. The full dichotomous key of a daphne is: Kingdom: Plantae Phylum: Magnoliophyta Class: Magnoliopside Order: Malvales Family: Thymelaeaceae Genus: Daphne Species: type 'Daphne (plant)' in on wikipedia and it will show you everything you need to know including different species. Hope this helps!
Kingdom: Plantae Phylum: Magnoliophyta Class: Liliolipsida Order: Cyperales Family: Poaceae Genus: Triticum Species: Aestivum
Kingdom: Plantae Phylum: Magnoliophyta Class: Magnoliopsida Order: Lamiales Family: Oleaceae Genus: Syringa Species: vulgaris
Kingdom: Plantae Phylum: Magnoliophyta Class: Liliopsida Order: Poales Family: Poaceae Genus: Zea Species: Z. mays