| 释义 |
siphonosteleenUK
si·phon·o·stele S0433300 (sī-fŏn′ə-stēl′, sī′fə-nə-stē′lē)n. A stele in which the vascular tissue is in the form of a cylinder surrounding the pith, as in the stems of most ferns and other seedless vascular plants.
[siphon + stele.]
si·phon′o·ste′lic (-stē′lĭk) adj.siphonostele (ˈsaɪfənəˌstiːl) n (Botany) botany the cylinder of conducting tissue surrounding a central core of pith in certain stems. See also stele3[C19: from siphon + stele] siphonostelic adjsi•phon•o•stele (saɪˈfɒn əˌstil, ˈsaɪ fə nəˌstil)
n. Bot. a stele containing a hollow tube of vascular tissue surrounding a pith. [1905–10] SiphonosteleenUK
siphonostele[sī′fän·ə‚stēl] (botany) A type of stele consisting of pith surrounded by xylem and phloem. Siphonostele in fern stems, a type of central cylinder in which the conducting tissues (xylem and phloem) surround the pith parenchyma. [23–1436–] siphonosteleenUK
siphonostele (sī-fŏn′ə-stēl′, sī′fə-nə-stē′lē)n. A stele in which the vascular tissue is in the form of a cylinder surrounding the pith, as in the stems of most ferns and other seedless vascular plants.
si·phon′o·ste′lic (-stē′lĭk) adj. |