Botanical drawings remain an indispensable tool in contemporary botanical research and education, significantly supporting both teaching and scientific work. They allow precise documentation and identification of plant species by highlighting specific features that are often not as clearly visible in photographs.
The family Lauraceae, commonly known as the laurel or avocado family, is one of the most frequent and ecologically significant woody plant families in humid tropical and subtropical forests worldwide. However, our knowledge of this group is still incomplete. Its phylogeny is only partially resolved, and we know little about the biology of most species. Many species within the larger genera are almost impossible to identify due to a lack of keys and recent revisions.
The majority of the detailed drawings in this collection were created between 1982 and 1986 by Jens G. Rohwer during his dissertation work, in which he examined numerous specimens from many herbaria around the world and analyzed their structures. Prof. Dr. Jens G. Rohwer held the position of professor of botany (systematics, evolution, and biodiversity of plants) at our university from 2000 until 2024.
Most drawings were made with a camera lucida, on DIN A6 paper (105 x 148 mm).
From this collection a total of 1477 digital objects are displayed in FUNDus
Photo: Jens G. Rohwer
Title: Persea ekmanii O.C. Schmidt Accepted name: Persea ekmanii O.C. Schmidt Collector: Ekman Collection Number: 10346 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802238 
Photo: Jens G. Rohwer
Title: Persea ekmanii O.C. Schmidt Accepted name: Persea ekmanii O.C. Schmidt Collector: Ekman Collection Number: 7482 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802238 
Photo: Jens G. Rohwer
Title: Persea ferruginea Kunth Accepted name: Persea ferruginea Kunth Collector: Díaz Collection Number: 10232 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801306 
Photo: Jens G. Rohwer
Title: Persea ferruginea Kunth Accepted name: Persea ferruginea Kunth Collector: Díaz Collection Number: 10232 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801306 
Photo: Jens G. Rohwer
Title: Persea ferruginea Kunth Accepted name: Persea ferruginea Kunth Collector: van der Werff Collection Number: 14840 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801306 
Photo: Jens G. Rohwer
Title: Persea ferruginea Kunth Accepted name: Persea ferruginea Kunth Collector: van der Werff Collection Number: 14840 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801306 
Photo: Jens G. Rohwer
Title: Persea spec., Fuentes 12172 Accepted name: Persea Mill. Collector: Fuentes Collection Number: 12172 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Persea spec., Fuentes 12172 Accepted name: Persea Mill. Collector: Fuentes Collection Number: 12172 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Damburneya gentlei (Lundell) Trofimov Accepted name: Damburneya gentlei (Lundell) Trofimov Collector: Gentle Collection Number: 3288 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Damburneya Imaging technique: Illustration Original type data: British Honduras: Stann Creek District, Stann Creek Valley, Mountain Cow Ridge, in high ridge on hillside, March 30, 1940, Percy H. Gentle 3288 (type in the University of Michigan Herbarium), vernacular name, ca' ca' woung; Stann Creek Valley, Big Eddy Ridge, April 1940, Gentle 3308; May 20, 1940, Gentle 3343, vernacular names, wild pear, timber sweet. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100450096 
Photo: Jens G. Rohwer
Title: Persea haenkeana Mez Accepted name: Persea haenkeana Mez Collector: Valenzuela Collection Number: 7753 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800011 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Freire Collection Number: 4349 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Homeier Collection Number: 334 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Neill Collection Number: 12959 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Neill Collection Number: 14441 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Neill Collection Number: 14441 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea hirta Nees Accepted name: Persea hirta Nees Collector: Palacios Collection Number: 13334 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801316 
Photo: Jens G. Rohwer
Title: Persea spec., Homeier 1076 Accepted name: Persea Mill. Collector: Homeier Collection Number: 1076 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Persea spec., Huamantupa 3747 Accepted name: Persea Mill. Collector: Huamantupa Collection Number: 3747 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Persea hypoleuca (A. Rich.) Mez Accepted name: Persea hypoleuca (A. Rich.) Mez Collector: Álvarez de Zayas Collection Number: 64993 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800014 
Photo: Jens G. Rohwer
Title: Persea krugii Mez Accepted name: Persea krugii Mez Collector: Ekman Collection Number: 1189 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800017 
Photo: Jens G. Rohwer
Title: Persea krugii Mez Accepted name: Persea krugii Mez Collector: Little Collection Number: 13345 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800017 
Photo: Jens G. Rohwer
Title: Persea spec., Monteagudo 7220 Accepted name: Persea Mill. Collector: Monteagudo Collection Number: 7220 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Persea spec., Neill 14440 Accepted name: Persea Mill. Collector: Neill Collection Number: 14440 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 
Photo: Jens G. Rohwer
Title: Persea nudigemma van der Werff Accepted name: Persea nudigemma van der Werff Collector: Neill Collection Number: 9064 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration Original type data: TYPE: Ecuador. Napo: Archidona, km 40 road Hollin–Loreto, tree, 20 m, Palacios & Iguago 4587 (fl) (holotype, MO; isotypes, AAU, GB, HBG, NY, QCNE, US). Paratypes. ECUADOR. Napo: Archidona, km 40 road Hollin–Loreto, Palacios & Iguago 4581 (fls) (MO, QCNE), Neill et al. 9064 (fls) (MO, QCNE); Napo, Archidona, km 50 road Hollin–Loreto, Palacios 4207 (fls) (MO, QCNE). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806204 
