George Edward Post described 221 taxa from Syria and adjacent regions in the late 1890s. Of these, types for 147 have been located, 77 at G and 70 at BEI.
MUSSELMAN, LYTTON JOHN and SAOUD, NADA SINNU (2004) "The Type Specimens of George Edward Post in Beirut and Geneva," Turkish Journal of Botany: Vol. 28: No. 1, Article 15. Available at: https://journals.tubitak.gov.tr/botany/vol28/iss1/15