rafflesias
plural of rafflesia

ragee
Alternative form of ragi (“finger millet”).

raggee
Alternative form of ragi (“finger millet”).

ragi
A grain, of species Eleusine coracana, cultivated as a cereal in arid areas of Africa and Asia; finger millet.

ragweed
A plant of the genus Ambrosia. These weeds are particularly noted for producing pollen that triggers hay fever.
A summer cypress, mock cypress (Bassia scoparia).

ragy
Alternative form of ragi (“finger millet”).

rajanigandha
The tuberose (Polianthes tuberosa (now Agave amica).

rajanigandhas
plural of rajanigandha

ramarama
A species of evergreen myrtle tree, Lophomyrtus bullata.

rambong
A tree of species Ficus elastica, from which natural rubber was historically produced.

rambongs
plural of rambong

ramicaul
A stem that bears a single leaf (as in some orchids)

ramicauls
plural of ramicaul

ramification
A branching-out, the act or result of developing branches; specifically the divergence of the stem and limbs of a plant into smaller ones, or of similar developments in blood vessels, anatomical structures etc.
An offshoot of a decision, fact etc.; a consequence or implication, especially one which complicates a situation.
An arrangement of branches.

ramifications
plural of ramification

ramnification
Misspelling of ramification.

ramoon
The ramoon-tree

rampick
Alternative form of rampike.

rampicks
plural of rampick

rampike
A standing dead tree.

rampikes
plural of rampike

rampole
Alternative form of rampike.

rampoles
plural of rampole

ramsh
Alternative form of ramson.

ramson
A plant, Allium ursinum, a wild relative of chives and garlic.

ramuscule
A twig, a small branch.

ramuscules
plural of ramuscule

rangpur
Citrus limon (syn. Citrus × limonia), a citrus fruit which is a hybrid between the mandarin orange and the lemon.

ranjau
Synonym of punji (“sharpened stick set in a pit etc. as a trap”).

ranjaus
plural of ranjau

ranjow
Alternative form of ranjau.

ranjows
plural of ranjow

ranpike
Alternative form of rampike.

ranpikes
plural of ranpike

ranuncula
Synonym of ranunculus (“buttercup”).

ranunculi
plural of ranunculus

ranunculid
Any plant in the subclass Ranunculidae.

ranunculids
plural of ranunculid

ranunculoid
Any flowering plant of the subfamily Ranunculoideae

ranunculoids
plural of ranunculoid

ranunculus
Any plant of the genus Ranunculus; the buttercup or crowfoot.

ranunculuses
plural of ranunculus

raphane
radish (especially the root of the plant)

raphanes
plural of raphane

raphide
A crystal of calcium oxalate, shaped like a needle, which forms as a metabolic byproduct in some plant cells.

raphidoflagellate
Synonym of raphidophyte.

raphidoflagellates
plural of raphidoflagellate

raphidophycean
Synonym of raphidophyte.

raphidophyceans
plural of raphidophycean

raphidophyte
Any of a group of unicellular algae of the class Raphidophyceae

raphidophytes
plural of raphidophyte

rapunzel
A plant with leaves and crisp roots which have been used in salads, rampion, Campanula rapunculus.
A plant with leaves which are used in salads, corn salad or mâche, Valerianella locusta.

ratooner
A plant that sprouts ratoons.

ratooners
plural of ratooner

ratstripper
An ornamental evergreen groundcover or low shrub native to the Appalachian mountains of the Eastern US, Paxistima canbyi

ratstrippers
plural of ratstripper

rattleroot
Synonym of rattleweed (“Actaea racemosa”)

rattleweed
Any plant of the genus Astragalus. of milkvetches.
Certain other plants:
Certain other plants:
Certain other plants:
Certain other plants:
Certain other plants:

rattleweeds
plural of rattleweed

raupo
A species of reed, Typha orientalis; bulrush; cumbungi.

raupos
plural of raupo

ravenala
Any plant of the genus Ravenala.

ravenalas
plural of ravenala

rawsonol
A brominated derivative of diphenylmethane found in the green alga Avrainvillea rawsonii.

rebloomer
A flower that blooms more than once in a year.

rebloomers
plural of rebloomer

rebutia
Any plant of the cactus genus Rebutia, the crown cactus.

rebutias
plural of rebutia

recaulescence
The adnation of leaves on their stalks to the stem.

recyclate
Raw material sent to, and processed in, a waste recycling plant or materials recovery facility.

recyclates
plural of recyclate

red algae
plural of red alga

red seaweed
Synonym of red alga.

redbud
Any of several small trees, of the genus Cercis, having purple-pink flowers that appear before the leaves; the Judas tree.

redbuds
plural of redbud

redcore
An oomycete, (Phytophthora fragariae) that causes root rot in strawberries.

redtwig
A plant of the species Cornus sericea, native throughout northern and western North America from Alaska east to Newfoundland, south to Durango and Nuevo León in the west, and Illinois and Virginia in the east.

redtwigs
plural of redtwig

reedmace
A water plant, the cattail.

reedmaces
plural of reedmace

reesk
Rank grass.
The waste land where rank grass grows.

reflorescence
A new blossoming of a plant during the season.
Resurgence; reflourishing; revival.

reflorescences
plural of reflorescence

regmacarp
A fruit which, when mature, splits open to release its seeds; a dehiscent fruit.

rendsina
Alternative form of rendzina.

rendzina
A dark soil that sometimes develops under grass on limestone and chalk.

rendzinas
plural of rendzina

rengarenga
Arthropodium cirratum, a herbaceous perennial plant endemic to New Zealand.

renosterbos
A species of plant, Dicerothamnus rhinocerotis

renosterbush
Alternative form of renosterbos

resak
A tree of the genus Vatica or Cotylelobium, or its timber.

reseeder
Any plant that reproduces by reseeding after a fire

reseeders
plural of reseeder

resistosome
The structure presumed to confer disease resistance to a plant

resistosomes
plural of resistosome

resprouter
Any plant that survives by resprouting after a fire

resprouters
plural of resprouter

resupination
The twisting of flowers or leaves by about 180° as they open.
The state of lying on the back; the state of being resupinate, or reversed.

reticulofenestrid
Any coccolith of an alga of the genus Reticulofenestra

reticulofenestrids
plural of reticulofenestrid

rewarewa
A tall evergreen tree, Knightia excelsa, endemic to New Zealand, with leathery leaves and red flowers.

rewarewas
plural of rewarewa

rhaphide
Alternative form of raphide.

rhenosterbos
A species of plant, Dicerothamnus rhinocerotis

rheophyte
A plant that grows in running water, such as in a stream or river

rheophytes
plural of rheophyte

rhipsalis
Any plant of the genus Rhipsalis, epiphytic flowering plants in the cactus family, often known as mistletoe cacti.

rhizanth
A parasitic flowering plant, all of which were formerly assigned to the order Rhizantheae.

rhizanths
plural of rhizanth

rhizobiotoxin
A bacterial phytotoxin, produced by Rhizobium japonicum, that causes the root nodules of some soybean plants to become chlorotic.

rhizobiotoxine
Alternative form of rhizobiotoxin.

rhizocompartment
Either of the environments occupied by plant roots: rhizoplane, rhizosphere and the surrounding soil.

rhizocompartments
plural of rhizocompartment

rhizoconcretion
The fossilized form of a tree root.

rhizoconcretions
plural of rhizoconcretion

rhizocretion
A concretion on the roots of a plant

rhizocretions
plural of rhizocretion

rhizodeposit
Sloughed-off plant cells, in the rhizosphere, that are fed on by bacteria.

rhizodeposits
plural of rhizodeposit

rhizolith
A fossilized root

rhizoliths
plural of rhizolith

rhizology
The study of plant roots.

rhizoma
Alternative form of rhizome.

rhizomas
plural of rhizoma

rhizomata
plural of rhizoma

rhizome
A horizontal, underground stem of some plants that sends out roots and shoots (scions) from its nodes.
A so-called “image of thought” that apprehends multiplicities.

rhizomes
plural of rhizome

rhizomicrobiome
A microbiome associated with the roots of a plant

rhizomicrobiomes
plural of rhizomicrobiome

rhizophyte
Any vascular plant that has roots