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 spec., Jaramillo 8165 Accepted name: Persea Mill. Collector: Jaramillo Collection Number: 8165 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Previously determined as Beilschmiedia sulcata (Ruiz & Pav.) Kosterm., but flowers very different. 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., McPherson 11362 Accepted name: Persea Mill. Collector: McPherson Collection Number: 11362 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., Silverstone-Sopkin 1564 Accepted name: Persea Mill. Collector: Silverstone-Sopkin Collection Number: 1564 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., Vásquez 21900 Accepted name: Persea Mill. Collector: Vásquez Collection Number: 21900 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Possibly a new species. 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., Vasquez 29220 Accepted name: Persea Mill. Collector: Vásquez Collection Number: 29220 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., Vasquez 29220 Accepted name: Persea Mill. Collector: Vásquez Collection Number: 29221 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., van der Werff 21330 Accepted name: Persea Mill. Collector: van der Werff Collection Number: 21330 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., Young 438 Accepted name: Persea Mill. Collector: Young Collection Number: 438 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 sphaerocarpa (H.J.P. Winkl.) Kosterm. Accepted name: Persea sphaerocarpa (H.J.P. Winkl.) Kosterm. Collector: Rojas Collection Number: 2506 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/17803174 
Photo: Jens G. Rohwer
Title: Persea sphaerocarpa (H.J.P. Winkl.) Kosterm. Accepted name: Persea sphaerocarpa (H.J.P. Winkl.) Kosterm. Collector: Rojas Collection Number: 2506 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/17803174 
Photo: Jens G. Rohwer
Title: Persea sphaerocarpa (H.J.P. Winkl.) Kosterm. Accepted name: Persea sphaerocarpa (H.J.P. Winkl.) Kosterm. Collector: Rojas Collection Number: 2506 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/17803174 
Photo: Jens G. Rohwer
Title: Persea subcordata (Ruiz & Pav.) Nees Accepted name: Persea subcordata (Ruiz & Pav.) Nees Collector: Huamantupa Collection Number: 3900 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/17801394 
Photo: Jens G. Rohwer
Title: Persea subcordata (Ruiz & Pav.) Nees Accepted name: Persea subcordata (Ruiz & Pav.) Nees Collector: Huamantupa Collection Number: 3900 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Stamen of the second whorl, adaxial side, and pistil. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801394 
Photo: Jens G. Rohwer
Title: Persea subcordata (Ruiz & Pav.) Nees Accepted name: Persea subcordata (Ruiz & Pav.) Nees Collector: Palacios Collection Number: 6380 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/17801394 
Photo: Jens G. Rohwer
Title: Persea subcordata (Ruiz & Pav.) Nees Accepted name: Persea subcordata (Ruiz & Pav.) Nees Collector: Valenzuela Collection Number: 1115 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/17801394 
Photo: Jens G. Rohwer
Title: Persea subcordata (Ruiz & Pav.) Nees Accepted name: Persea subcordata (Ruiz & Pav.) Nees Collector: Valenzuela Collection Number: 1115 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/17801394 
Photo: Jens G. Rohwer
Title: Persea urbaniana Mez Accepted name: Persea urbaniana Mez Collector: Holdridge Collection Number: 138 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/17800026 
Photo: Jens G. Rohwer
Title: Persea urbaniana Mez Accepted name: Persea urbaniana Mez Collector: Woodbury Collection Number: s.n. 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/17800026 
Photo: Jens G. Rohwer
Title: Persea spec., Valenzuela 10035 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 10035 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., Valenzuela 10035 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 10035 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., Valenzuela 10106 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 10106 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., Valenzuela 10106 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 10106 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., Valenzuela 6926 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 6926 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., Valenzuela 6935 Accepted name: Persea Mill. Collector: Valenzuela Collection Number: 6935 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 
