Plant Structures
Salverform - has a slender     tube and an abruptly expanded flat limb extending at right angles to the tube
Bilabiate - two-lipped
Funnelform - the corolla tube     gradually widens; as in morning glory flowers
Campanulate - bell shaped
Corymb - an inflorescence     appearing to have a flat top; indeterminate inflorescence with outer flowers opening first
Cyme - more or less flat     topped, determinate inflorescence with outer flowers opening last
Composite Head - a dense     cluster of ray and disk flowers on a very short axis
Umbel - indeterminate     inflorescence ,usually but not necessarily flat topped, with the pedicles and peduncles     arising from a common point; resembles the stays of an umbrella
Spike - unbranched,     elongated, simple, indeterminate inflorescence with sessile flowers
Spathe and Spadix - a thick,     fleshy flower spike (spadix) surrounded by a leaf or bract (spathe); ex: closet plant
Solitary - borne singly or     alone
Panicle - indeterminate,     branching inflorescence; the individual branches are either raceme or corymb-like
Raceme - simple,     indeterminate inflorescence with pedicelled flowers
Leaflet - secondary leaf on a       compound leaf
Petiolule - the leaflet stalk       connecting the blade to the rachis
Rachis - the midrib of the       compound leaf bearing leaflets
Petiole - the leaf stalk     connecting the compound leaf to the stem
Stipule - an appendage at the     base of the petiole
Leaf Arrangement
Opposite - two leaves per     node, directly across from each other
Alternate - one leaf per node     with the first leaf being on the alternate side of the stem from the next
Whorled - three or more     leaves per node
Basal - leaves are clustered     at the base of the stem
Lanceolate - a narrow leaf,     broadest at the base narrowing toward the apex
Ovate - egg shaped with a     broad base
Oval - broadest at the middle
Peltate - a broad, rounded     leaf with the petiole attached in the middle of the underside of the leaf blade;     umbrella-like
Reniform - kidney-shaped; the     petiole is attached at the sinus
Cordate - heart-shaped
Acuminate - tip has a pinched     in appearance with an extended point
Apiculate - an abrupt, soft     tip
Rounded - tip is broad and     rounded; having no point
Emarginate - a shallow notch     at the apex
Cordate - heart-shaped
Oblique - leaf margins do not     attach to the petiole evenly
Peltate - similar to peltate     leaf shape; refers to the attachment of the petiole on the underside of the leaf blade
Rounded - broad based
Sheathing - the base of the     leaf surrounds the stem
Truncate - squared base
Entire - no teeth nor lobes     on the margin; smooth
Crenate - teeth are rounded
Serrate - small teeth on the     margin which point toward the apex; saw-like
Lobed - margin divided into     rounded lobes and sinuses
Parallel - veins are arranged     parallel to one another from the base to the apex
Pinnate - veins move     laterally from the midrib throughout the blade
Palmate - veins branch from     the leaf base throughout the blade just as fingers radiate from a hand
Tap Roots - the primary root     continues straight down the axis of the plant traveling deep into the soil
Fibrous Roots - the roots     resemble fibers, there is no single primary root
Tuberous Roots - thick,     fleshy roots
Tubers - a thick, underground stem having numerous buds
Rhizomes - a lateral stem     growing just beneath or partially beneath the soil line
Stolons - an above ground     trailing shoot
Corm - a thick, solid,     underground stem
Tunicate Bulb - an     underground, modified leaf bud with tight concentric layers; used as a storage organ
Scaly Bulb - an underground     modified leaf bud with loose concentric layers; used as a storage organ