Designating the surface of a leaf that is fruther away from the apex of the axis that bears it; the lower or dorsal surface of such an organ.
Nonliving; specifically, the nonliving components of an ecosystem, such as temperature, humidity, the mineral content of the soil, etc.
To separate or be separated by abscission.
The separation of leaves, flowers and fruits from the plant by the formation of an abscission layer.
Needle-shaped, very narrow.
Frond of adult ferns of the genera Teratophyllum, Lomagramma and Lomariopsis.
Facing or on the side towards the apex.
Having the fertile lamina of a fern totally covered with sporangia.
A tip drawn out to a slender point.
Designating the surface of a leaf that is closest to the apex of the axis that bears it; the upper or ventral surface of such an organ.
A thick-walled nonmotile spore derived from a vegetative cell that thickens its wall.
Lacking a definite shape; formless.
A substance that gives pain relief.
Of veins forming a network of reticulum.
A huge and diverse group of vascular plants with seeds borne in an ovary.
Referring to organisms that indulge in anisogamy.
The sexual fusion of dissimilar gametes.
The row of thickened cells running round the sporangial head.
Towards the front of the body.
A drug or agent that destroys or cause the expulsion of intestinal worms.
The part of the flower bearing the pollen; the terminal part of the stamen consisting of two lobes, each with two sacs containing pollen.
The use of ants by birds to remove ectoparasites in their plumage. Ants are either allowed to swarm onto the plumage or actively picked up and placed onto the plumage.
Allevating of suppressing coughing.
A nonmotile gamete, found in certain lower algæ.
An asexual nonmotile spore.
To place side by side or near to each other.
Living in trees.
The female sex organ in algae, fungi, bryophytes and ferns that produces the egg (pleural: archegonia).
A space between the veins in reticulate venation.
A fleshy outgrowth of some seeds that is derived from the funicle eg. the aril of nutmeg that gives the spice mace, the seed being the nutmeg.
Any form of reproduction in which new individuals develop from a single parent; reproduction without involving sex cells from two different individuals.
Causing contraction of body tissues; checking of blood flow; restricting secretion of fluids.
Ear-like structure found at the base of the frond stalk of Angiopteris and Marattia.
A nonmotile spore that is the miniature of the cell from which it is derived.
Stiff bristle-like appendage in the flowering glumes of grass.
The angle formed by the adaxial surface of a branch or leaf and the shoot that bears it.
The bud that is found in the axil of a leaf.