dictyostele
1. siphonic dictyostele
[医] 管形网状中柱
2. Stellar arrangements vary considerably in plants from the simple protostele, in which leaf gaps are absent, to the complex dictyostele, in which there are many closely spaced LEAF GAPS.
根部的中柱有一个维管组织的中央核心,用以对抗拉应力。