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: Triadodaphne inaequitepala (Kosterm.) Kosterm. Accepted name: Endiandra inaequitepala Kosterm. Collector: Pullen Collection Number: 5508 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Endiandra Imaging technique: Illustration Original type data: Typus: Carr 15172 (BM) E. New Guinea, Papua, Isuarave, alt. 1500 m, Febr., fr., Carr 15370 (B, 2 sheets, BO, SING, 7 sheets) ; ibid., alt. 1300 m, March, buds creamy white, Carr 16082 (BM, BO, SING, sheets) ; ibid., alt. 3500 m, Febr. fl., Carr 15172 (BM, 2 sheets) ; S. slope of Hydrographers Range, near Siurane, Managalase area, N. Div., alt. 1200 m, July, fl., Pullen 5508 (BO, L, LAE), tree 39 m. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806521 
Photo: Jens G. Rohwer
Title: Triadodaphne myristicoides Kosterm. Accepted name: Endiandra Collector: Wright Collection Number: S.29265 Nomenklaturstatus: not accepted Family: Lauraceae Genus: Endiandra Imaging technique: Illustration Original type data: Typus: E. Wright S. 29265 (L) Borneo. Sarawak, 4th Div., Niah, Ulu Sungai Sekaloh, mixed Dipterocarp forest on reddish clay loam soil, Nov., buds, S. 29265 (A, BO, K, KEP, L, SAN, SAR, SING). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805004 
Photo: Jens G. Rohwer
Title: Triadodaphne pachytepala Kosterm. Accepted name: Endiandra Collector: Gafui Collection Number: BISP 18915 Nomenklaturstatus: not accepted Family: Lauraceae Genus: Endiandra Imaging technique: Illustration Original type data: Typus: Solomon Is., S. W. Choiseul, E side of Kolombangara R., alt. 50 m. well dried primary fores. Jan., submature flower, B. S. I. P. 18915 (L). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806519 
Photo: Jens G. Rohwer
Title: Triadodaphne pachytepala Kosterm. Accepted name: Endiandra Collector: Gafui Collection Number: BISP 18915 Nomenklaturstatus: not accepted Family: Lauraceae Genus: Endiandra Imaging technique: Illustration Original type data: Typus: Solomon Is., S. W. Choiseul, E side of Kolombangara R., alt. 50 m. well dried primary fores. Jan., submature flower, B. S. I. P. 18915 (L). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806519 
Photo: Jens G. Rohwer
Title: Tylostemon angustitepalus K. Krause Accepted name: Damburneya patens (Sw.) Trofimov Collector: coll.ign. Collection Number: Versuchsanstalt Kamerun 706 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Damburneya Comments: Floral details of holotype. Imaging technique: Illustration Original type data: Kamerun: Im Unterholz des Urwaldes bei Victoria (Deistel im Herbar der Versuchsanstalt für Landeskultur in Kamerun n. 559. — Blühend im Juni 1912). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806055 
Photo: Jens G. Rohwer
Title: Tylostemon angustitepalus K. Krause Accepted name: Damburneya patens (Sw.) Trofimov Collector: Deistel Collection Number: 559 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Damburneya Comments: Introduced to Cameroon, not native in Africa, see Rohwer 1989. Imaging technique: Illustration Original type data: Kamerun: Im Unterholz des Urwaldes bei Victoria (Deistel im Herbar der Versuchsanstalt für Landeskultur in Kamerun n. 559. — Blühend im Juni 1912). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806055 
Photo: Jens G. Rohwer
Title: Umbellularia californica (Hook. & Arn.) Nutt. Accepted name: Umbellularia californica (Hook. & Arn.) Nutt. Collector: Lewis Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Umbellularia Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804222 
Photo: Jens G. Rohwer
Title: Urbanodendron bahiense (Meisn.) Rohwer Accepted name: Urbanodendron bahiense (Meisn.) Rohwer Collector: Duarte Collection Number: 4826 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Comments: drawing of floral details, from Duarte 4826 (RB) Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804627 
Photo: Jens G. Rohwer
Title: Urbanodendron macrophyllum Rohwer Accepted name: Urbanodendron macrophyllum Rohwer Collector: coll.ign. Collection Number: RB134861 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Comments: Drawing of floral details, from flower bud of specimen RB 134861. Imaging technique: Illustration Original type data: Hab. Brasiliae Prov. Rio de Janeiro ad Sambé, ad ripas fluminis Rio Bonito. Holotypus: Herb. RB 134861, collectore non indicato (an J. Barbosa Rodrigues s.n.?), 20 Jul 1876, RB, isotypi HBG, MO. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804625 
Photo: Jens G. Rohwer
Title: Urbanodendron verrucosum (Nees) Mez Accepted name: Urbanodendron verrucosum (Nees) Mez Collector: Duarte Collection Number: 5450 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800493 
Photo: Jens G. Rohwer
Title: Urbanodendron verrucosum (Nees) Mez Accepted name: Urbanodendron verrucosum (Nees) Mez Collector: Kuhlmann Collection Number: RB91278 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800493 
Photo: Jens G. Rohwer
Title: Urbanodendron verrucosum (Nees) Mez Accepted name: Urbanodendron verrucosum (Nees) Mez Collector: coll.ign. Collection Number: RB91279 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800493 
Photo: Jens G. Rohwer
Title: Urbanodendron verrucosum (Nees) Mez Accepted name: Urbanodendron verrucosum (Nees) Mez Collector: da Silva Collection Number: RB111062 Nomenklaturstatus: accepted Family: Lauraceae Genus: Urbanodendron Comments: Drawing of fruit, from O.A. da Silva s.n., RB 111062 (RB) Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800493 
