Early Quenya
sirpe
noun. stem, stalk, slender tube, etc.
telko
noun. stem
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A noun appearing as ᴱQ. sirpe “stem, stalk (slender tube, etc.)” in the Qenya Lexicon of the 1910s under the early root ᴱ√SIRIP (QL/84).
Neo-Quenya: As this early root does not conflict with any later forms, I would retain this word as ᴺQ. sirpë “stalk, slender tube”. However, I adapt the early root as ᴺ√THIRIP “stalk” to preserve more Gnomish forms, so I would assume the s in ᴺQ. sirpë is from older þ. Furthermore, for “stem” I would use the later word Q. telco (LotR/1118).