Passiflora or passion flower is a genus of more than 550 species which are members of the Passifloraceae family. The genus, which contains vines, lianas, shrubs and trees, is predominantly distributed ...

2009) with condensed partial inflorescences. All flowers are formed in a continuous ontogenetic (developmental) series as found in regular racemes of other members of the bean family. The meristem of ...

对于霸王龙及其近缘物种的研究，一直是学术界和大众较为关注的话题。近些年来对于霸王龙及其近亲的起源、个体发育、种群生态学以及相应的生物力学研究，都是横空出世。去年年末，一项关于幼年暴龙科恐龙食物的研究映入人们的眼帘，这项研究说的是霸王龙的近亲—一只幼年 ...