Cytisus nigricans f. elongatus (Willd.) Zabel Handb. Laubholzben. : 265 (1903)

Nomenclatural References

• person : Carl Ludwig Willdenow (1765-1812) Based on occurrence of standard abbreviation 'Willd.' in the authors string.
• person : Hermann Zabel (1832-1912) Based on occurrence of standard abbreviation 'Zabel' in the authors string.