Glossary List - The William & Lynda Steere Herbarium

Displaying 526 - 550 out of 1575 Object(s)

Term	Definition
Filaments clavate	Club-shaped, i.e., the filaments are unidimensional toward the base and then abruptly expanded in diameter toward the apex.
Filaments curved	Filaments that arise from the staminal ring of zygomorphic-flowered Lecythidaceae and curve inward.
Filaments golf club-shaped.	A filament that is unidimensional for the lower third of the length and enlarged and shaped like the head of an old fashioned golf club driver.
Filaments reflexed	Filaments that arise from the inside of a staminal tube that abruptly turn downward as found in all species of Allantoma and Grias.
Filaments sigmoid-shaped	Refers to filaments that are S-shaped to a more-or-less degree.
Filaments straight	Filaments that do not deviate in direction throughout their length, i.e., they do not form an arch or do not turn abruptly downward. This type is less frequentyl called filament erect.
Filaments tapered	A filament that arises from the staminal ring and gradually increases in diameter from the base to the apex.
Filaments terete	Filaments with cross sections circular in outline.
Filaments unidimensional	Filaments that are the same diameter throughout their length.
Fimbriate	Fringed on the margin with trichomes coarser than those of a ciliate margin.
Flabellate (flabelliform)	Fan-shaped; i.e., broadly wedge-shaped.
Flag	The upper, broad petal of Fabaceae. Same as banner, standard, and flag with standard the preferred term.
Flagellate (flagelliform)	Whiplike.
Flagelliflorous	A plant with a whiplike inflorescence that usually hangs below the crown.
Flexuous	Bent alternately in opposite directions.
Floating aquatic plant	A plant that occurs on the surface of a lake or pond without attachment by roots to the soil at the bottom of the lake or pond upon which it grows.
Flora	A book in which all of the species of a given group of plants for a given geographic area are described and illustrated to some extent. In addition, dichotomous keys used for indentification are provided.
Floral aromas	Aromas emitted by plants to attract pollinators. These aromas can be extracted from plants by enclosing the flowers in bags or glass globes and then pumping the air from around the flowers through a tube with adsorbents. The samples are passed though a Gas Chromatograph and the chemical composition of the aromas of different flowers are identified by comparing the samples with a database of known compounds (Knudsen & Mori, 1996). There is a correlation between different floral aromas and the pollinators that visit the flowers.
Floret	In the Poaceae, the term includes the lemma and palea as well as the enclosed flower; sometimes used to refer to the flowers of Asteraceae.
Flower bisexual	A flower with a functional androecium (the male part of the flower and all parts derived from it) and a functional gynoecium (the female part of the flower).
Flower oxidizes bluish-green	When the flower is bruised, the color at the point of the bruise turns bluish-green.
Flowering associated with leaf flush	A phenological strategy in which a tree drops its leaves, flowers when the canopy is leafless or partially leafless, and flushes new leaves after flowering or flowers at about the same time that new leaves are flushed; i.e., there is some association between flowering and leaf fall and flush.
Flowering not associated with leaf flush	A phenological strategy in which there is no apparent relationship between leaf drop, leaf flush, and flowering.
Flowering plant	A plant whose seeds are borne within a fruit derived from a carpel or carpels.
Flowering plant life cycle	Referring to the alternation of generations between the gameophyte (haploid) and sporophyte (diploid) stages of a floweirng plant. The most conspicuous stage of the life cycle is the sporophyte generation whereas the gametophyte generation is small and inconspicuous. Flowering plants are heterosporous because they have two different kinds of spores, the pollen grain and the embryo sac which contains a egg.