Not quite right?
"Search similar patterns."
S___________
Definitions
A type of stele in which the vascular tissue in the stem forms a cylinder surrounding a central pith and possessing leaf gaps.
Word origin
From siphon + -o- + stele.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for siphonostele yet.