a. 茎贯穿叶而生长的, 抱茎状的

[医] 穿叶的(指茎)

[ adj ]
(of a leaf) having the base united around (and apparently pierced by) the stem
<adj.all>

Perfoliate \Per*fo"li*ate\, a. [Pref. per- + L. folium leaf.]
1. (Bot.) Having the basal part produced around the stem; --
said of leaves which the stem apparently passes directory
through.

2. (Zo["o]l.) Surrounded by a circle of hairs, or projections
of any kind.