Sexta dissertatio botanica. Description in Latin. Copies are available. Curtis' Botanical Magazine , London 1788, vol. Description in English, see Page1 and Page2 .
Copies are available.
It is worthwile to study. The original copperplate measured 120 by 200 mm. Pictures by Schwegmann after living specimen. Description by Schneevogt in Latin, Dutch, French and German. Copies are available.