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: Endiandra sieberi Nees Accepted name: Endiandra sieberi Nees Collector: Travers Collection Number: 14 Nomenklaturstatus: accepted Family: Lauraceae Genus: Endiandra Comments: Drawing of floral details Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806222 Photo: Jens G. Rohwer
Title: Endiandra grandifolia Teschner Accepted name: Endiandra grandifolia Teschner Collector: Clemens Collection Number: 1600 Nomenklaturstatus: accepted Family: Lauraceae Genus: Endiandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806601 Photo: Jens G. Rohwer
Title: Endiandra pubens Meisn. Accepted name: Endiandra pubens Meisn. Collector: Constable Collection Number: 4876 Nomenklaturstatus: accepted Family: Lauraceae Genus: Endiandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50182792 Photo: Jens G. Rohwer
Title: Endlicheria spec., Conde 140 Accepted name: Endlicheria Nees Collector: Conde Collection Number: 140 Nomenklaturstatus: accepted Family: Lauraceae Genus: Endlicheria Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40003198 Photo: Jens G. Rohwer
Title: Endlicheria spec., Øllgaard 99275 Accepted name: Endlicheria Nees Collector: Øllgaard Collection Number: 99275 Nomenklaturstatus: accepted Family: Lauraceae Genus: Endlicheria Comments: Stamens reminiscent of Aniba and Kubitzkia, but flowers unisexual. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40003198 Photo: Jens G. Rohwer
Title: Eusideroxylon zwageri Teijsm. & Binn. Accepted name: Eusideroxylon zwageri Teijsm. & Binn. Collector: Endert Collection Number: 15E 2P 680 Nomenklaturstatus: accepted Family: Lauraceae Genus: Eusideroxylon Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805008 Photo: Jens G. Rohwer
Title: Eusideroxylon zwageri Teijsm. & Binn. Accepted name: Eusideroxylon zwageri Teijsm. & Binn. Collector: Kochummen Collection Number: 75988 Nomenklaturstatus: accepted Family: Lauraceae Genus: Eusideroxylon Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805008 Photo: Jens G. Rohwer
Title: Goeppertia caudata Meisn. Accepted name: Ocotea debilis Mez Collector: Spruce Collection Number: 2638 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Cupule of isotype Spruce 2638 (K) Ocotea debilis Mez is a nomen novum for this species, because of Ocotea caudata (Nees) Mez as the blocking name for a new combination. Rohwer (1986) had seen the specimen in K only. Mez (1889) erroneously cited the number as 2368. Imaging technique: Illustration Original type data: In Brasil. prov. Rio Negro prope Panurè ad Rio Uaupès (Spruce n. 2638 !). (v. s. sine fr. in h. Hook. et Mart.). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804668 Photo: Jens G. Rohwer
Title: Gymnobalanus guianensis Nees Accepted name: Ocotea oblonga (Meisn.) Mez Collector: Martin Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Fruit of possible holotype from the Kunth herbarium in B Imaging technique: Illustration Original type data: E Guiana retulit Martin. Vidi in Herb. Kunthiano exemplum Musei Parisiensis, cum fructibus absque floribus. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100366914 Photo: Jens G. Rohwer
Title: Gymnobalanus latifolia Meisn. Accepted name: [uncertain] Collector: Fendler Collection Number: 1095 Nomenklaturstatus: not accepted Family: Lauraceae Genus: Gymnobalanus Comments: Fruit of holotype Fendler 1095 (G-DC) Genus uncertain; not yet matched with any accepted species. Imaging technique: Illustration Original type data: In Venezuelà inter coloniam Tovar et Petaquira, alt. 5000 ped. (Fendler n. 1095 !). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804065 Photo: Jens G. Rohwer
Title: Gymnobalanus minarum Nees & Mart. Accepted name: Ocotea minarum (Nees & Mart.) Mez Collector: Martius Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of syntype Martius s.n. (M); specimen with female flowers The syntype Sello 5636 (B) was effectively selected as lectotype by Mez (1889). Imaging technique: Illustration Original type data: In sylvis Provinciae Minarum generalium primus invenit Martius. Aliis in locis Brasiliae Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804500 Photo: Jens G. Rohwer
Title: Gymnobalanus minarum Nees & Mart. Accepted name: Ocotea minarum (Nees & Mart.) Mez Collector: Martius Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of syntype Martius s.n. (M); specimen with male flowers The syntype Sello 5636 (B) was effectively selected as lectotype by Mez (1889). Imaging technique: Illustration Original type data: In sylvis Provinciae Minarum generalium primus invenit Martius. Aliis in locis Brasiliae Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804500 Photo: Jens G. Rohwer
Title: Gymnobalanus minarum Nees & Mart. Accepted name: Ocotea minarum (Nees & Mart.) Mez Collector: Sello Collection Number: 5636 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of lectotype Sello 5636 (B) The syntype Sello 5636 (B) was effectively selected as lectotype by Mez (1889). Imaging technique: Illustration Original type data: In sylvis Provinciae Minarum generalium primus invenit Martius. Aliis in locis Brasiliae Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804500 Photo: Jens G. Rohwer
Title: Gymnobalanus sprucei Meisn. Accepted name: Ocotea neesiana (Miq.) Kosterm. Collector: Spruce Collection Number: 3792 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Fruit of isosyntype Spruce 3792 (K) Rohwer (1986) had not seen the Riedel syntype. Later (in notes added to his text) he expressed doubts that the syntypes represented the same species. Imaging technique: Illustration Original type data: In Brasil. prov. Matto Grosso et Rio Negro (Riedel n. 1258 ! Spruce n. 3792 !) et Guiana Gall. (Sagot n. 810 !) (v.s. in hb. Petrop., DC., etc.). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804514 Photo: Jens G. Rohwer
Title: Gymnobalanus sprucei Meisn. Accepted name: Ocotea neesiana (Miq.) Kosterm. Collector: Sagot Collection Number: 810 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of isosyntype Sagot 810 (K) Rohwer (1986) had not seen the Riedel syntype. Later (in notes added to his text) he expressed doubts that the syntypes represented the same species. Imaging technique: Illustration Original type data: In Brasil. prov. Matto Grosso et Rio Negro (Riedel n. 1258 ! Spruce n. 3792 !) et Guiana Gall. (Sagot n. 810 !) (v.s. in hb. Petrop., DC., etc.). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804514 Photo: Jens G. Rohwer
Title: Hexapora curtisii Hook. f. Accepted name: Hexapora curtisii Hook. f. Collector: coll.ign. Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Hexapora Comments: Without any label data; possibly fragment of type material. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50228739 Photo: Jens G. Rohwer
Title: Hexapora curtisii Hook. f. Accepted name: Hexapora curtisii Hook. f. Collector: Curtis Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Hexapora Comments: Drawing of floral details, from Curtis s.n. (L); very likely a fragment of the type collection taken by Kostermans. Imaging technique: Illustration Original type data: Mr. C. Curtis has sent from Penang flowering specimens of a plant […] License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50228739 Photo: Jens G. Rohwer
Title: Hypodaphnis zenkeri (Engl.) Stapf Accepted name: Hypodaphnis zenkeri (Engl.) Stapf Collector: Leeuwenberg Collection Number: 5557 Nomenklaturstatus: accepted Family: Lauraceae Genus: Hypodaphnis Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804357 Photo: Jens G. Rohwer
Title: Hypodaphnis zenkeri (Engl.) Stapf Accepted name: Hypodaphnis zenkeri (Engl.) Stapf Collector: Leeuwenberg Collection Number: 5557 Nomenklaturstatus: accepted Family: Lauraceae Genus: Hypodaphnis Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804357 Photo: Jens G. Rohwer
Title: Hypodaphnis zenkeri (Engl.) Stapf Accepted name: Hypodaphnis zenkeri (Engl.) Stapf Collector: Wilks Collection Number: 1655 Nomenklaturstatus: accepted Family: Lauraceae Genus: Hypodaphnis Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804357 Photo: Jens G. Rohwer
Title: Hypodaphnis zenkeri (Engl.) Stapf Accepted name: Hypodaphnis zenkeri (Engl.) Stapf Collector: Zenker Collection Number: 3033a Nomenklaturstatus: accepted Family: Lauraceae Genus: Hypodaphnis Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804357 Photo: Jens G. Rohwer
Title: Nothaphoebe Blume? Accepted name: Nothaphoebe Blume? Collector: de Wilde Collection Number: 15701 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nothaphoebe Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40028988 Photo: Jens G. Rohwer
Title: Nothaphoebe Blume? Accepted name: Nothaphoebe Blume? Collector: Soepadmo Collection Number: 150 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nothaphoebe Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40028988 Photo: Jens G. Rohwer
Title: Lindera subumbelliflora (Blume) Kosterm. Accepted name: Lindera subumbelliflora (Blume) Kosterm. Collector: Koorders Collection Number: K29844β Nomenklaturstatus: not accepted: superfluous renaming (illegitimate) Family: Lauraceae Genus: Iteadaphne Comments: Inflorescence and floral details of male flower The name Iteadaphne confusa is illegitimate because Blume cited Laurus pauciflora Blume and Laurus subumbelliflora Blume as synonyms. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805241