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10 Cards in this Set
- Front
- Back
(8 orders, 39, families, 12,000 species)
-most primitive subclass -well developed perianth -numerous stamens -Apocarpous -small embryo with large amounts of endosperm -many with monocolpate pollen many with specialized secretory cells -some have wood like gymnosperm wood |
Magnoliidae
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(11 orders, 24 families, 3400 species)
-mostly woody (2 fam herbaceous) -reduced flowers usually in catkins -mostly wind pollinated -advanced members have mature fruit containing a single ovule |
Hammelidae
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-Trinucleate pollen
-free central or basal placentation -presence of Betalains instead of Anthocyanins in all but two families |
Caryophyllidae
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(13 orders, 78 families, 25,000 species)
-syncarpous -binucleate pollen -no free central or basal placentation -centrifugal stamen development -more than a third of species have parietal placentation -another third of the species are sympetalous |
Dilleniidae
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(18 orders, 114 families, 58,000 species)
-most have well developed flowers generally the flowers are polypetalous -few are amentiferous -stamen development is centripetal -pollen is mostly binucleate -parietal placentation is rare -usually only 1-2 ovules per locule -nectariferous disc often present |
Rosidae
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(11 orders, 49 families, 60,000 species)
-sympetalous -stamens usually as many or few than number of corolla lobes and alternate with lobes -either 4 or 5 corolla lobes present -usually two carpellate |
Asteridae
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(4 orders, 16 families, 500 species)
-mostly aquatic -mostly apocarpous -trinucleate pollen -lacks endosperm |
Alismatidae
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(4 orders, 5 families, 5,600 species)
-growth habit: tiny to huge -50% are arborescent -flowers tend to borne on spathe and spadix inflorescence |
Arecidae
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(8 orders, 25 families, 19,000 species)
-mainly terrestrial herbs -syncarpous -trinucleate pollen -most have endosperm -primitive members have well-developed perianth for insect pollination -advanced members reduced flowers for wind pollination |
Commelinidae
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(2 orders, 19 families, 28,000 species)
-syncarpous -petaloid sepals and petals -insect pollination -terrestrial |
Lilliadae
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