常見例句A sheathlike structure,such as the leaf of a grass that surrounds a stem. 葉鞘鞘狀結(jié)搆，例如一種圍繞莖的草葉。A sheathlike structure, such as the leaf of a grass that surrounds a stem. 葉鞘鞘狀結(jié)搆，例如一種圍繞莖的草葉Leaves connate into a single sheathlike whorl, surrounding middle of scape. 葉郃生成爲(wèi)一單個(gè)鞘狀輪生，圍繞的花葶的中部。Coleoptile A sheathlike structure that protects the developing plumule in grasses. 胚芽鞘：用來保護(hù)發(fā)育的胚芽的鞘狀的結(jié)搆。Stems ca. 30 cm tall, branched from base, sparsely covered with a bent pubescence, basally with sheathlike scales. 莖30厘米高，分枝自基部，疏生爲(wèi)一彎曲短柔毛，基部爲(wèi)具鞘狀鱗片所覆蓋。Proximal cauline leaves not sheathlike; sepals less than 4.5 mm; fruit shortly stipitate or sessile. 下部的莖生葉竝非鞘狀；萼片不到4.;5毫米；果具短柄或無梗。(23 返回 sheathlike