A root system with a prominent central axis, having the main root axis larger with smaller branches radiating from it
A taxon is a group (plural: taxa) is a group of (one or more) organisms. A taxon usually, although not always, reflects presumptive evolutionary (phylogenetic) relationships.
(From the Glossary of the International Code of Zoological Nomenclature:) "A taxonomic unit, whether named or not: i.e. a population, or group of populations of organisms which are usually inferred to be phylogenetically related and which have characters in common which differentiate the unit (e.g. a geographic population, a genus, a family, an order) from other such units. A taxon encompasses all included taxa of lower rank and individual organisms. [...]"
Someone who studies the science or technique of classifying, in this case, plants
A slender, clasping, twining, outgrowth of the stem that aids in support of climbing plants
Whorls of the perianth of a flower in which the sepals/calyx and petals/corolla are undifferentiated - and identical or almost identical in appearance - such as with tulips and lilies and magnolias
The top or tip of a structure, organ, such as a leaf or stem (and the point farthest from the point of attachment)
A fixed path in a given area along which one observes and records occurrences of plants or animals of study
The release/emission of water vapor from plant leaves (primarily through stomata) and stems into the atmosphere
A modified and specialized leaf designed to function as a trap, such as a Venus Fly-trap leaf that closes in half upon a receiving a trigger/stimulus and trapping an insect that it will digest for nutrients
Fine outgrowths or appendages on plants. These are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae.
Having three leaves, or leaflets, or similar structures
A leaf having three leaflets
The leaves typical of a plant species that emerge subsequent to the cotyledons (which are often shaped differently)
A thickened and short subterranean stem having numerous nodes and buds (in white potatoes - the "eyes") and functioning for food storage
A swollen, modified root that has thickened for nutrient storage, such as a sweet potato and cassava (which has no "eyes" (nodes or buds)