8.Characteristics: Terrestrial ferns; stipes tuft, backlish at base; young fronds pinnaye with wider pinnae, when getting older, the fronds become bipinnate or tripinnatifid with slender pinnules.
9.Celt section of race is more , mark of umbrella-type section , slender acanthopanax section , the composite family , red-spotted stonecrop section, and kingcup section etc.
10.A slender prolongation of the receptacle between the carpels as a central axis, as in the fruits of some members of the Umbelliferae (Apiaceae) and the Geraniaceae.