pro·to·stele (pr  t -st l , prt-stl)n. Botany A stele that forms a solid core of xylem encased by phloem. pro to·stelic (-stl k) adj. |
protostele [ˈprəʊtəˌstiːl -ˌstiːlɪ]
n
(Life Sciences & Allied Applications / Botany) a simple type of stele with a central core of xylem surrounded by a cylinder of phloem: occurs in most roots and the stems of ferns, etc.
protostelic adj
| protostele (prt-stl, prt-stl) The most primitive form of stele, consisting of a solid core of xylem encased by phloem or of xylem interspersed with phloem. The roots of all vascular plants, as well as the stems of lycophytes, have protosteles. |
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