American fern whose clustered sporangia resemble a snake's rattle
royal agaric
Noun
widely distributed edible mushroom resembling the fly agaric
reindeer moss
Noun
an erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans
reindeer lichen
Noun
an erect greyish branching lichen of Arctic and even some north temperate regions constituting the chief food for reindeer and caribou and sometimes being eaten by humans
rhizopus
Noun
any of various rot causing fungi of the genus Rhizopus
ring rot fungus
Noun
fungus causing soft watery rot in fruits and vegetables and rings of dry rot around roots of sweet potatoes
rhizoid
Noun
any of various slender filaments that function as roots in mosses and ferns and fungi etc
roccella
Noun
a source of the dye archil and of litmus
ring-stalked fungus
Noun
genus of gill fungi with brown spores that is closely related to Agaricus
round-spored gyromitra
Noun
a gyromitra with a brown puffed up fertile part and a rosy pink fluted stalk and smooth round spores
roof mushroom
Noun
a large genus of fungi belonging to the family Pluteaceae
rust fungus
Noun
any of various fungi causing rust disease in plants
rootlet
Noun
small root or division of a root
root hair
Noun
thin hairlike outgrowth of an epidermal cell just behind the tip
rootstock
Noun
root or part of a root used for plant propagation
rootstock
Noun
a horizontal plant stem with shoots above and roots below serving as a reproductive structure
root climber
Noun
a plant that climbs by its adventitious roots e.g. ivy
rhizome
Noun
a horizontal plant stem with shoots above and roots below serving as a reproductive structure
rootstalk
Noun
a horizontal plant stem with shoots above and roots below serving as a reproductive structure
raceme
Noun
usually elongate cluster of flowers along the main stem in which the flowers at the base open first
rock plant
Noun
plant that grows on or among rocks or is suitable for a rock garden
rupestral plant
Noun
plants growing among rocks
rupestrine plant
Noun
plants growing among rocks
rupicolous plant
Noun
plants growing among rocks
root system
Noun
a developed system of roots
rhizoctinia
Noun
any fungus now or formerly belonging to the form genus Rhizoctinia
root crop
Noun
crop grown for its enlarged roots: e.g. beets
root cap
Noun
thimble-shaped mass of cells covering and protecting the growing tip of a root
runcinate leaf
Noun
a leaf having incised margins with the lobes or teeth curved toward the base
resurrection fern
Noun
fern growing on rocks or tree trunks and having fronds greyish and scurfy below
reniform leaf
Noun
a simple kidney-shaped leaf
rock polypody
Noun
chiefly lithophytic or epiphytic fern of North America and east Asia
rock brake
Noun
chiefly lithophytic or epiphytic fern of North America and east Asia
rock brake
Noun
dwarf deciduous lithophytic ferns
rock brake
Noun
any of several small lithophytic ferns of tropical and warm temperate regions
rabbit's-foot fern
Noun
tropical American fern with brown scaly rhizomes cultivated for its large deeply lobed deep bluish-green fronds
rasp fern
Noun
any fern of the genus Doodia having pinnate fronds with sharply dentate pinnae
rusty woodsia
Noun
a common rock-inhabiting fern of northern temperate regions having rusty-brown stipes and lanceolate pinnate fronds
rough horsetail
Noun
evergreen erect horsetail with rough-edged stems
running pine
Noun
a variety of club moss
rock spikemoss
Noun
tufted spikemoss forming loose spreading mats
rateables
Noun
property that provides tax income for local governments
receipts
Noun
the entire amount of income before any deductions are made
real gross national product
Noun
a version of the GNP that has been adjusted for the effects of inflation
real GNP
Noun
a version of the GNP that has been adjusted for the effects of inflation