of five stamens alternate to the corolla lobes with short filaments and elongated anthers.
The flowers are composed of 6 blue lilac tepals, persistent tepals fused along half their length into a perianth tube; the androecium
consist of six stamens inserts at different levels, with long-, mid- and short-styled morphs (hereafter referred to as the L, M and S morphs, respectively), and a yellow mark or nectar guide on the upper middle lobe.
Comparative floral development and androecium
structure in Malvoideae (Malvaceae s.
Its inflorescence is comprised of distinct morphological units such bracts, petals, gynaecium, androecium
, which may interact causing effect upon the floral longevity, according to Mattiuz et al.
K C A G: calyx, corolla, androecium
, and gynoecium, respectively), along with 13 drop-down menus (Figure 4).
Each flower is characterized by an actinomorphic, pentamerous perianth composed of a whorl of sepals and a whorl of petals, a haplostemonous androecium
with antesepalous stamens, and a bicarpellate gynoecium; the styles of the flowers are fused to free, and the single stigma is capitate.
Nectaries of Chamaesyce, in which nectaries occur in the inflorescence, as in Euphorbia (So 2004) and Poinsettia, but are morphologically extrafloral (the cyathium being comprised of individual flowers of gynoecium or androecium
only) might function in pollination as well as potential anti-herbivore defense, depending on the ecological context.
1) Organ categories are affected in various combinations: all organs (in large groups with most conspicuous monosymmetry), or mainly calyx and corolla, or mainly only one organ category (calyx, corolla, androecium
, or gynoecium).
Floral organogenesis in Chloranthus sessilifolius (Chloranthaceae): with special emphasis on the morphological nature of the androecium
consists of six stamens of three types as follows.
In addition to the trends observed in the evolution ofperianth dimorphism (Bartlett & Specht, 2010, 2011), another important evolutionary trend that defines the evolution of the Zingiberales flower is the evolution of the androecium
or stamen whorls (Fig.
Unlike seeds or fruits, which are single morphological units, flower is a unique organ and is composed of many morphological units such as sepals, petals, androecium
, gynoecium, stem and often leaves.