Better define what a botanicalPlant is

[AFoletti]

I think we should make this very central element clearer.
What is a ? Is it a precise biological and taxonomic element (say, a Species or a family) or a "colture", which is an agronomical concept of loosely related plants bundled together for one reason or another?

In the current implementation, the element name suggests the former ("botanical"), while the annotation seems to suggest the latter ("Kultur")

eCH-0265/src/eCH-0265-1-0.xsd

Line 352 in 16bfd6e

<xs:documentation xml:lang="de">Beschreibt eine botanische Kultur im engeren Sinne.</xs:documentation>

[AFoletti]

This, along with other documentation issues, needs to be solved in V1.5