Mindblown: a blog about philosophy.
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Indicator species
Those species that one would expect to find in a particular ecosystem. Indicator species are not necessarily found solely in that ecosystem. Thus, biologists rely on a combination of several indicator species of both plants and animals, and on physical characteristics, to define an ecosystem, such as the Chihuahuan Desert.
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Entire margin
A leaf edge that has no teeth or lobes. Without teeth or notches on margins (as leaves and petals).
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Dissected leaf
A leaf blade that is cut into many small sections, such as a carrot leaf, or yarrow leaf.
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Disk flowers
The tiny, tubelike flowers found on the heads of members of Asteraceae. Tiny, tubular flowers, often forming the center “button” on a composite flower. Small, tubular flowers in the central portion of the flower head of many plants in the aster family (Asteraceae). In the Compositae, radially symmetrical flowers that emerge from the disk, or…
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Bipinnately compound leaf
In this text, refers to a leaf composed of two or more pinnately compound sections joined at their bases.
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Bilateral symmetry
Said of an object, such as a flower, which will form mirror-image halves when cut along only one plane. Symmetrical on a central line or axis, dividing the organ in two mirrored halves. Symmetry of an organism or body whose right and left halves are mirror images of each other or in which a median…
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Variegated leaf
Green leaf which is blotched, edged, or spotted with yellow, white, cream, or red (e.g., many caladium and dieffenbachia leaves).
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Universal veil
Tissue surrounding a developing mushroom button. A layer of tissue completely surrounding the developing fruit body, pieces of it sometimes remaining on the cap as warts or patches when the fruit body expands, also surrounding the base of the stem as a volva, often on both the cap and stem as differently colored and differently…
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Unisexual
Having only one type of sexual structure (either male or female) produced by any one individual. Of only one sex. Descriptive of a flower having only pistils or only stamens, not both. Having stamens or pistils only. Of 1 sex, as in plants that have separate male and female flowers.
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Thallose
In lichens, having a simple, flattened thallus.
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