Looking at f65r in regards to the line as a functional unit.

[Jorge_Stolfi]

 What makes this plant so obvious that it only needs those 3 words.

It is a mistake to assume that the VMS is "perfect", like a copy of the Quran or a Torah scroll -- with every letter and stroke precisely as it should be.  Any research that makes that assumption will get hopelessly snagged at every little inconsistency. 

To me it is obvious that the text we see today is the result of many steps, before and after the initial writing on the parchment, that were either unintended or executed with varying amounts of care and skill -- and thus introduced an unknown amount of errors.  From spelling mistakes to skipping, transposing, or mangling entire paragraphs (like the two halves of f34r parag 1).

The multi-language texts I have been using for comparative statistical analysis were all written by literate authors and revised by printers, and thus are essentially free of errors. (And I even corrected a few that had managed to sneak through.  I collected my Certificate of Extreme Asperger after I corrected some errors in the Quran. In Arabic. Even without knowing a hummus serving of the language.  )   

However, I recently got hold of the diary of the Lewis and Clark Expedition that explored the Western US around 1800.  It is a very important historical manuscript -- by mostly by two authors, with a couple entries by others.  It is in modern English, not encrypted.  But it was written by brave Soldiers, not scholars; and thus it has about one spelling error or idiosyncratic abbreviation every line, or thereabouts.  Especially when the authors try to render phrases and names in French, Spanish, and the languages of many dozens of Native tribes that they interacted with along the way. And the errors are not consistent, of course: the word "buffalo" is spelled in at least four or five different ways.  Even in the same paragraph...

The point is that we must always keep in mind the possibility that the Voynich manuscript has as many errors and inconsistent spellings as the Lewis and Clark one, or even more.  

All the best, --jorge