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Term Definition
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 and perhaps a few species of the Lecythis sec. Pisonis group. Androecial hoods of Lecythidaceae vary according to their degree of structural complexity and the type of androecial appendages they possess. The androecium of a zygomorphic-flowered Lecythidaceae. Photo by C. A. Gracie.
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 ). The appendices are always more or less fused together at their bases. If the expanded part of the hood is subapical and the ligule extends beyond the thickening, the extension is called the anterior ligular extension. Do not confuse this term with curved appendages (see definition) Androecial hood: Bertholletia-type. Drawing by Bobbi Angell and photo by S. A. Mori
Androecial hood double-coiled The androecial hood is coiled twice inward. Medial section of Eschweilera atropetiolata flowers. Photo by C. Gracie.
Androecial hood flat The androecial hood is not curved or coiled inward at all Androecial hood: Lecythis pisonis-type. Photos by S. A. Mori
Androecial hood flat, thick The androecial hood, as seen in medial longitudinal section, is thickened dorsiventrally. Androecial hood: Lecythis corrugata-type. Drawing by B. angell.
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: Lecythis pisonis-type. Drawing by Bobbi Angell.
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. Horizontally androecial hood orientation of Eschweilera apiculata. Photo by S. A. Mori.
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. Androeial hood orientation of Eschweilera calyculata. Photo by M. Stapf.
Androecial hood once-coiled The androecial hood turns inward once Medial section of the androecium of Lecythis tuyrana. Photo by C. Galdames (SCZ)
Androecial hood split A separation of the androecial hood into a posterior hood extension and an anterior hood extension. Medial sections sections of an androecium of Bertholletia excelsa. Photo by N. P. Smith.
Androecial hood triple-coiled The androecial hood makes three turns inward Androecium of Eschweilera pedicellata. Photo by S. A. Mori.
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: Bertholletia-type. Drawing by Bobbi Angell and photo by S. A. Mori
Androecial hood: Corythophora alta-type A thickened hood, bearing staminodes. Androecial hood: Corythophora alta-type. Photos by S. A. Mori.
Androecial hood: Couratari-type The androecial hood has an extra external flap found only in species of . Androecial hood o Couratari stellata. Photo by C. Gracie and drawing by B. Angell.
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 of Couroupita guianensis. Drawing by Bobbi Angell.
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: Couroupita subsessilis-type. Drawing by B. Angell.
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: Eschweilera-type. Drawing by B. Angell.
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 corrugata-type. Drawing by B. angell.
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 idatimon-type. Drawing by B. Angell. Photo by C. Gracie.
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. Medial longitudinal section of the androecial hood of Lecythis tuyrana. Photo by C. Galdames (SCZ).
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 persistens subsp. persistens-type. Photos by S. A. Mori.
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. Androecial hood: Lecythis pisonis-type. Drawing by Bobbi Angell.