Protostele


Protostele
Protostele, ursprünglichste Form der Stele; bei Urfarnen und Jugendformen vieler rezenter Farne: zentrales konzentrisches Leitbündel, meist mit Innenxylem.

Deutsch wörterbuch der biologie. 2013.

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  • protostele — [prōt′ə stēl΄, prōt′ōstē΄lē] n. [ PROTO + STELE] a simple, primitive arrangement of conducting tissues in stems and roots of certain lower plants, consisting of a solid cylinder of xylem surrounded by a layer of phloem protostelic adj …   English World dictionary

  • protostele — noun Date: 1901 a stele forming a solid rod with the phloem surrounding the xylem • protostelic adjective …   New Collegiate Dictionary

  • protostele — protostelic /proh teuh stee lik/, adj. /proh teuh steel , stee lee/, n. Bot. the solid stele of most roots, having a central core of xylem enclosed by phloem. [1900 05; PROTO + STELE] * * * …   Universalium

  • protostele — noun A type of stele, in which the vascular tissue in the stem forms a solid core, with no central pith or leaf gaps. Ant: siphonostele …   Wiktionary

  • protostele — pro·to·stele …   English syllables

  • protostele — pro•to•stele [[t]ˈproʊ təˌstil, ˌsti li[/t]] n. bot the solid stele of most plant roots, having a central core of xylem enclosed by phloem • Etymology: 1900–05 pro to•ste′lic, adj …   From formal English to slang

  • protostele — /ˈproʊtəstili/ (say prohtuhsteelee), / stil/ (say steel) noun the solid stele of most roots, having a central core of xylem enclosed by phloem. –protostelic /proʊtəˈstilɪk/ (say prohtuh steelik), adjective …   Australian English dictionary

  • protostele — …   Useful english dictionary

  • Calamopityales — Zeitraum Unteres Karbon Fundorte Nordamerika, Europa Systematik ohne Rang: Charophyta Reich: Pflanzen (Plantae) …   Deutsch Wikipedia

  • Stele (biology) — In a vascular plant, the stele is the central part of the root or stem containing the tissues derived from the procambium. These include vascular tissue, in some cases ground tissue (pith) and a pericycle, which, if present, defines the outermost …   Wikipedia


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