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: Aspidostemon inconspicuus Rohwer Accepted name: Aspidostemon inconspicuus Rohwer Collector: coll.ign. Collection Number: SF 12355 Nomenklaturstatus: accepted Family: Lauraceae Genus: Aspidostemon Imaging technique: Illustration Original type data: Holotype: Service Forestier 12355 (P, Isotype BO n.v.): Madagascar, Menagise-Brickaville, 8. Dec. 1954. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804327 Photo: Jens G. Rohwer
Title: Aspidostemon synandra Rohwer Accepted name: Aspidostemon synandra Rohwer Collector: coll.ign. Collection Number: SF 15610 Nomenklaturstatus: accepted Family: Lauraceae Genus: Aspidostemon Imaging technique: Illustration Original type data: Holotype: Service Forestier 15610 (P): Madagascar, canton d'Ampasina, district Fénérive, Tanambao-Tampolo, forêt humide, alt. 3 m, 28. Jul. 1955. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804331 Photo: Jens G. Rohwer
Title: Aspidostemon synandra Rohwer Accepted name: Aspidostemon synandra Rohwer Collector: coll.ign. Collection Number: SF 15610 Nomenklaturstatus: accepted Family: Lauraceae Genus: Aspidostemon Imaging technique: Illustration Original type data: Holotype: Service Forestier 15610 (P): Madagascar, canton d'Ampasina, district Fénérive, Tanambao-Tampolo, forêt humide, alt. 3 m, 28. Jul. 1955. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804331 Photo: Jens G. Rohwer
Title: Aspidostemon synandra Rohwer Accepted name: Aspidostemon synandra Rohwer Collector: coll.ign. Collection Number: SF 15610 Nomenklaturstatus: accepted Family: Lauraceae Genus: Aspidostemon Imaging technique: Illustration Original type data: Holotype: Service Forestier 15610 (P): Madagascar, canton d'Ampasina, district Fénérive, Tanambao-Tampolo, forêt humide, alt. 3 m, 28. Jul. 1955. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804331 Photo: Jens G. Rohwer
Title: Aydendron glaucum Klotzsch & H.Karst. ex Nees Accepted name: Ocotea karsteniana Mez Collector: Karsten Collection Number: 95 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: A nomen novum was required in Ocotea because of Ocotea glauca (Nees & Mart.) Mez Imaging technique: Illustration Original type data: Columbia. Karsten n. 95. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804706 Photo: Jens G. Rohwer
Title: Beilschmiedia alloiophylla (Rusby) Kosterm. Accepted name: Beilschmiedia alloiophylla (Rusby) Kosterm. Collector: van der Werff Collection Number: 12289 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802444 Photo: Jens G. Rohwer
Title: Beilschmiedia fruticosa Engl. Accepted name: Beilschmiedia fruticosa Engl. Collector: Zenker Collection Number: 1063 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801418 Photo: Jens G. Rohwer
Title: Beilschmiedia pendula (Sw.) Hemsl. Accepted name: Beilschmiedia pendula (Sw.) Hemsl. Collector: Fuertes Collection Number: 1617 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800506 Photo: Jens G. Rohwer
Title: Beilschmiedia pendula (Sw.) Hemsl. Accepted name: Beilschmiedia pendula (Sw.) Hemsl. Collector: Howard Collection Number: 19080 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800506 Photo: Jens G. Rohwer
Title: Beilschmiedia pendula (Sw.) Hemsl. Accepted name: Beilschmiedia pendula (Sw.) Hemsl. Collector: Jack Collection Number: 6806 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800506 Photo: Jens G. Rohwer
Title: Beilschmiedia pendula (Sw.) Hemsl. Accepted name: Beilschmiedia pendula (Sw.) Hemsl. Collector: Liogier Collection Number: 18167 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800506 Photo: Jens G. Rohwer
Title: Beilschmiedia bourdilloni Brandis Accepted name: Beilschmiedia bourdillonii Brandis Collector: Bourdillon Collection Number: 87 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Isosyntype Bourdillon 87 (HBG); drawing of floral details The original spelling of the epithet ("bourdilloni") had to be corrected to conform to Art. 60.8 of the International Code of Nomenclature for algae, fungi and plants (2018). Imaging technique: Illustration Original type data: Tranancore, evergreen forest, 300-1,500 ft. (Bourdillon 87). Shevaroy hills (D. B. 1882). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100427404 Photo: Jens G. Rohwer
Title: Beilschmiedia brandisii Hook. f. Accepted name: Beilschmiedia brandisii Hook. f. Collector: Brandis Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Isotype Brandis s.n. (HBG); drawing of floral details Imaging technique: Illustration Original type data: Assam; in the Naraber Forest, Golaghat, Brandis. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800028 Photo: Jens G. Rohwer
Title: Beilschmiedia spec., Chai 37315 Accepted name: Beilschmiedia Nees Collector: Chai Collection Number: 37315 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40025992 Photo: Jens G. Rohwer
Title: Tylostemon cinnamomeus Stapf Accepted name: Beilschmiedia cinnamomea (Stapf) Robyns & R. Wilczek Collector: Zenker Collection Number: 2855 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Isotype Zenker 2855; drawing of floral details Imaging technique: Illustration Original type data: Upper Guinea. Cameroons: Bipinde, Zenker, 2855! License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802673 Photo: Jens G. Rohwer
Title: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Accepted name: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Collector: Mildbraed Collection Number: 5072 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802677 Photo: Jens G. Rohwer
Title: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Accepted name: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Collector: Mildbraed Collection Number: 5072 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802677 Photo: Jens G. Rohwer
Title: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Accepted name: Beilschmiedia corbisieri (Robyns) Robyns & R. Wilczek Collector: Mildbraed Collection Number: 5072 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802677 Photo: Jens G. Rohwer
Title: Beilschmiedia costaricensis (Mez & Pittier) C.K. Allen Accepted name: Beilschmiedia pendula (Sw.) Hemsl. Collector: van der Werff Collection Number: 17848 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802678 Photo: Jens G. Rohwer
Title: Tylostemon dinklagei Engl. Accepted name: Beilschmiedia dinklagei (Engl.) Robyns & R. Wilczek Collector: Dinklage Collection Number: 1140 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Isotype Dinklage 1140; drawing of floral details Imaging technique: Illustration Original type data: Kamerun: Gross-Batanga, im trocknen lichten Walde (Dinklage n. 1140. — Blühend im Febr. 1891, fruchtend im Juni 1891). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802683 Photo: Jens G. Rohwer
Title: Beilschmiedia dinklagei (Engl.) Robyns & R. Wilczek Accepted name: Beilschmiedia dinklagei (Engl.) Robyns & R. Wilczek Collector: Le Testu Collection Number: 7258 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802683 Photo: Jens G. Rohwer
Title: Beilschmiedia diversiflora Pierre ex Robyns & R. Wilczek Accepted name: Beilschmiedia diversiflora Pierre ex Robyns & R. Wilczek Collector: Le Testu Collection Number: 8099 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details "diversifolia" on the drawing is an error. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802686 Photo: Jens G. Rohwer
Title: Beilschmiedia glauca S.K. Lee & L.F. Lau Accepted name: Beilschmiedia glauca S.K. Lee & L.F. Lau Collector: van Balgooy Collection Number: 2562 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803193 Photo: Jens G. Rohwer
Title: Beilschmiedia grandifolia (Stapf) Robyns & Wilczek Accepted name: Beilschmiedia grandifolia (Stapf) Robyns & Wilczek Collector: Zenker Collection Number: 2250 Nomenklaturstatus: accepted Family: Lauraceae Genus: Beilschmiedia Comments: Isosyntype Zenker 2250; drawing of floral details Imaging technique: Illustration Original type data: Upper Guinea. Cameroons: Bipinde, Zenker, 2250 ! 2250A ! License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802694