Existing results showed flavonoids were the characteristic chemical constituents of Nelumbinis
stamen, which exhibited various bioactivities including anti-ulcer, anti-thrombosis, analgesic, anti-diarrhea, strengthen uterine contraction and so on (Zhang et al., 1998; Wu et al., 2003; Zhou et al., 2011).
Following emergence of all
stamen primordia, the floral primordial apex is flat.
The lower numbers produced by hand pollination treatments may be the result of the random transfer of medium
stamen's pollen grains vs.
Stamina is derived from the root word,
stamen, which means "thread" in Latin and "a standing" in Greek (Neufeldt & Guralnik, 1997).
Then two
stamen primordia and the carpel primordium are initiated.
For the majority of the angiosperms the functional
stamen is differentiated into a basal supportive part, namely the filament, and upper microsporangia-bearing tissue, namely the anther (see, e.g., D'Arcy, 1996; Endress, 1994; Endress & Stumpf, 1990, 1991; Hufford & Endress, 1989; Weberling, 1989).
For example, alfalfa blossoms' unusual arrangement of petals and
stamen can be fatal to honeybees.
caeruleum, which grows to around 60cm (92ft) tall, producing soft blue flowers with bright yellow
stamens, and self-seeds freely.