Displaying 1 - 40 out of 420 Object(s)
| Term | Definition | |
|---|---|---|
| Caducous | Falling off very early. | |
| Abaxial | The lower part of a structure such as a leaf, i.e., that part of a structure that faces away the main axis to which it is attached. For example, if a leaf is pushed upward and against a stem the surface facing away from the stem is the abaxial surface. |  |
| Adaxial | The upper part of a structure such as a leaf, i.e., that part of the structure that faces toward the main axis to which it is attached. For example, if a leaf is pushed upward and against a stem the surface facing toward the stem is the abaxial surface. | |
| Admedial | Toward the axis of any structure, especially used to describe leaf venation. |  |
| Alate | Refers to a band of tissue running the length of a structure; = winged. |  |
| Androecial appendages | In the Lecythidaceae, any prolongation from the surface of the androecium; if there are fertile anthers on the appendage they are called a stamens, if there are normal appearing anthers that produce only fodder pollen they are called staminodes, if there are only rudimentary anthers or no anthers at all the appendages they are called vestigial stamens, and if they produce nectar they are called nectar-producing vestigial stamens. |  |
| Androecial hood | In zygomorphic-flowered Lecythidaceae with ligules, the distal part of the ligule that has become modified either by the outgrowth of appendices (= staminodes, vestigial stamens, or nectar-producing vestigial stamens), by an abrupt change in direction of the ligule, or by both. Androecial hoods are usuallly separated from the staminal ring by an appendage-free part of the ligule (the only known exception is |
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| Androecial hood appendages swept inward | A androecial hood type in which appendages arise from an expanded apical or subapical part of the ligule from where they curve into the flower but do not form a coil (e.g., as in species of |
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| Androecial hood double-coiled | The androecial hood is coiled twice inward. |  |
| Androecial hood flat | The androecial hood is not curved or coiled inward at all | |
| Androecial hood flat, thick | The androecial hood, as seen in medial longitudinal section, is thickened dorsiventrally. |  |
| Androecial hood flat, thin | The androecial hood is not curved or coiled inward and it is not thickened as viewed in a medial longitudinal section. |  |
| Androecial hood horizontally oriented (= hood horizontally oriented) | An androecial hood with the first coil oriented at more-or-less 90 degrees to the main axis of the flower. |  |
| Androecial hood obliquely oriented (= hood obliquely orientated) | An androecial hood that is oriented at an angle less than 90 degrees to the main axis of the flower. |  |
| Androecial hood once-coiled | The androecial hood turns inward once |  |
| Androecial hood split | A separation of the androecial hood into a posterior hood extension and an anterior hood extension. |  |
| Androecial hood triple-coiled | The androecial hood makes three turns inward |  |
| Androecial hood: Bertholletia-type | The Bertholletia-type of androecial hood has appendages that are swept back into the interior of the hood which are called vestigial stamens; these appendages do not have anthers. | |
| Androecial hood: Corythophora alta-type | A thickened hood, bearing staminodes. |  |
| Androecial hood: Couratari-type | The androecial hood has an extra external flap found only in species of |
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| Androecial hood: Couroupita guianensis-type | In this type of hood, there is an appendage-free area between the staminal ring and the androecial hood proper. The appendages bear normal looking anthers but they contain fodder pollen (=staminodes) and the hood is slightly thickened. |  |
| Androecial hood: Couroupita subsessilis-type | This type of androecial hood has three features: 1) an invagination, 2) a notch on the distal end as viewed from above, and 3) staminodes. |  |
| Androecial hood: Eschweilera-type | In this type of hood, the interior of the hood forms an inward coil and the vestigial stamens at the end of the coil are nectar-producing. |  |
| Androecial hood: Lecythis corrugata-type | In this type of androecial hood, the hood is flat and thickened, there are no appendages with anthers on the hood, and the vestigial stamens are poorly developed. | |
| Androecial hood: Lecythis idatimon-type | The androecial hood is flat and there are only vestigial stamens representing the appendages of the hood. |  |
| Androecial hood: Lecythis ollaria-type | This type of androecial hood turns inward but does not form a complete coil, the vestigial stamens are all the same size, and lack anthers; thus, they are called vestigial stamens. |  |
| Androecial hood: Lecythis persistens subsp. persistens-type | The androecial hood of this type is flat and the appendages of the hood are with anthers that bear fodder pollen and, thus, are called staminodes |  |
| Androecial hood: Lecythis pisonis-type | The androecial hood is separated from the staminal ring, the hood is flat, and there are staminodes proximally and vestigial stamens distally. | |
| Androecium (pl. = androecia) | The male part of the flower. |  |
| Androecium actinomorphic | Capable of being divided in more than one plane into two or more equal halves; usually, but not always, used to describe flowers. |  |
| Androecium zygomorphic | The prolongation of one side of the androecium of all species of |
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| Androphore | A stalk elevated above the point of perianth attachment which supports the stamens. |  |
| Anisocytic stomata | Referring to a stomatal type in which one of the subsidiary cells surrounding a stomate is smaller than the other epidermal cells. |  |
| Anomocytic stomata | Referring to a stomatal type in which the subsidiary cells surrounding a stomate are not differentiated from the other epidermal cells. | |
| Anterior | ||
| Anterior end of flower | The most distal end of the flower but not including inner coils, i.e., the end of a zygomorphic-flowered Lecythidaceae into which a pollinator enters to reap a pollinator reward. |  |
| Anterior hood extension | An extension of the ligule beyond the point where the androecial hood splits into two extensions, this extension is the uppermost division of the androecial hood split and extends forward from the split. | |
| Anther | The pollen-bearing part of the stamen. |  |
| Anther connective | The tissue that connects the thecae on one side of an anther to the thecae on the other side. |  |
| Anther dehiscence lateral | Anthers that dehisce by lateral slits. |  |