…Of these, the microphyllous and macrophyllous ferns belong to different phylogenetic groups, and among the macrophyllous ferns, there are the genus Acanthurus and the genus Acanthurus, which are not phylogenetically related. Among the microphyllous ferns, there are three types: those in which all the spores in a single sorus mature at the same time (syntrophy), those in which the spores mature sequentially from the base to the top of the sorus (prototrophy), and those in which spores of various degrees of maturity are mixed in a single sorus (mixed maturity), and they have evolved in this order. Also, the origin of the sorus is phylogenetically different between those that originate from the end of the vein, which is originally the leaf margin (marginal ferns), and those that are attached to the back of the vein (epiphytic ferns). … *Some of the terminology that mentions "sorus" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このうち,小葉性のものと大葉性のものは異なった系統群に属しており,大葉性のもののうち,真囊性のものには系統的につながりの認められないリュウビンタイの類とハナヤスリの類がある。薄囊シダ類のうちには,一つの胞子囊群(ソーラスsorus)中の胞子がすべて同時に成熟するもの(斉熟),胞子囊托の基部から上部に向けて順番に成熟していくもの(順熟),それに一つのソーラスの中にさまざまの程度に成熟した胞子が混在するもの(混熟)の三つの型があり,この順に進化してきたものである。また,ソーラスの起源が,もともと葉縁である脈端にあるもの(縁生類)と,脈の背面につくもの(面生類)とは系統的に異なっている。… ※「sorus」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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