... root replaced by adventitious roots. Mostly herbs. Vascular ... Primary root replaced by adventitious roots. Leaves with parallel venation and sheathing bases ...
Angiosperm origins and relationships of major lineages Vessels and tracheids Companion cells Pollen Fertilisation Development of Fruits Cycads Conifers Ginkgos ...
... often reduced to scales or fleshy; sheathing at the base. Class: Liliopsida Order: Rosales Family: Orchidaceae Orchid Family One of the largest families.