raceme
An unbranched, elongated inflorescence with pedicellate flowers maturing from the bottom upward i.e., flowers attached to the main stem by short stalks.
rachis
The axis of an inflorescence or of a compound leaf.
ray
An outer ring of strap-like florets in the head of Asteraceae (daisy) flowers.
recurved
Curved backward.
reflexed
Bent back on itself.
re-introduction
Translocating wild or cultivated individuals to sites where the taxon has been known to occur in the past, but from which it has disappeared.
reniform
Kidney shaped.
repand
With a slightly wavy margin.
replum
The outer structure of a pod in which the valves have dehisced (persists after the opening of the fruit).
restiad
Area dominated by rush-like plants (collectively known as restiads) of the family Restionaceae. Includes Chatham Island and North Island Sporodanthus and oioi (Apodasmia similis).
retrorse
Pointing backward.
retuse
A shallow notch at the rounded or blunt apex of a leaf.
rhizomatous
With underground creeping stems.
rhizome
An underground stem (usually spreading horizontallly or creeping) or short and erect.
rhombic
Diamond-shaped.
rhomboid
Diomond shaped, nearly rhombic.
riparian
Relating to or living or located on the bank of a natural watercourse (as a river) or sometimes of a lake or a tidewater.
riparian margin
Refers to the edges of streams, rivers,lakes or other waterways.
riparian plants
Refers to plants found growing near the edges of streams, rivers or other waterways.
riparian zone
A strip of land next to streams, rivers, and lakes where there is a transition from terrestrial (land vegetation) to aquatic (water) vegetation. Also known as “berm”.
riverine
Pertaining to rivers, streams and such like flowing water systems.
rootstock
A short, erect, underground stem.
rosette
A radiating cluster of leaves.
rostellum
In orchids, a modified stigma that prevents self-fertilisation.
rosulate
A dense radiating cluster of leaves.
rugose
Wrinkled.
rugulose
Having small wrinkles.
runner
A trailing stem that roots at the nodes.
rupestral
Growing on rocks.
rushes
A group of distinctive wetland plants. They have solid stems (grasses have hollow stems), true rushes Juncus sp. have rounded leaves.
rhizoid
Any of various slender filaments that function as roots in mosses and ferns and fungi.
runcinate
Sharply pinnatifid or cleft, the segments directed downward.
