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: Nectandra aff. globosa (Aubl.) Mez Accepted name: Nectandra aff. globosa (Aubl.) Mez Collector: Breteler Collection Number: 3950 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804125 Photo: Jens G. Rohwer
Title: Nectandra aff. globosa (Aubl.) Mez Accepted name: Nectandra aff. globosa (Aubl.) Mez Collector: Huashikat Collection Number: 1787 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804125 Photo: Jens G. Rohwer
Title: Nectandra aff. globosa (Aubl.) Mez Accepted name: Nectandra aff. globosa (Aubl.) Mez Collector: Kayap Collection Number: 968 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804125 Photo: Jens G. Rohwer
Title: Nectandra aff. hihua (Ruiz & Pav.) Rohwer Accepted name: Nectandra aff. hihua (Ruiz & Pav.) Rohwer Collector: Gentry Collection Number: 43741A Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805987 Photo: Jens G. Rohwer
Title: Nectandra aff. hihua (Ruiz & Pav.) Rohwer Accepted name: Nectandra aff. hihua (Ruiz & Pav.) Rohwer Collector: Gentry Collection Number: 43741A Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805987 Photo: Jens G. Rohwer
Title: Nectandra aff_japurensis Nees & Mart. Accepted name: Nectandra aff_japurensis Nees & Mart. Collector: Smith Collection Number: 4626 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801068 Photo: Jens G. Rohwer
Title: Nectandra aff_japurensis Nees & Mart. Accepted name: Nectandra aff_japurensis Nees & Mart. Collector: van der Werff Collection Number: 8286 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801068 Photo: Jens G. Rohwer
Title: Nectandra aff. krugii Mez Accepted name: Nectandra aff. krugii Mez Collector: Heller Collection Number: 6199 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800073 Photo: Jens G. Rohwer
Title: Nectandra aff. maynensis Me Accepted name: Nectandra aff. maynensis Me Collector: Gentry Collection Number: 29620 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800079 Photo: Jens G. Rohwer
Title: Damburneya aff. nitida (Mez) Trofimov & Rohwer Accepted name: Damburneya aff. nitida (Mez) Trofimov & Rohwer Collector: Martinez Collection Number: 113 Nomenklaturstatus: accepted Family: Lauraceae Genus: Damburneya Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100450136 Photo: Jens G. Rohwer
Title: Damburneya aff. nitida (Mez) Trofimov & Rohwer Accepted name: Damburneya aff. nitida (Mez) Trofimov & Rohwer Collector: Martinez Collection Number: 124 Nomenklaturstatus: accepted Family: Lauraceae Genus: Damburneya Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100450136 Photo: Jens G. Rohwer
Title: Nectandra aff. obtusata Rohwer Accepted name: Nectandra aff. obtusata Rohwer Collector: Díaz Collection Number: 2092 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806049 Photo: Jens G. Rohwer
Title: Nectandra amazonum Nees Accepted name: Nectandra amazonum Nees Collector: Duarte Collection Number: 7354 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801027 Photo: Jens G. Rohwer
Title: Nectandra acutangula Miq. Accepted name: Ocotea acutangula (Miq.) Mez Collector: Blanchet Collection Number: 3961 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: The paper by Miquel is on Blanchet's collections from Brazil, thus the number "2961" refers to a Blanchet specimen. Unfortunately, there is a typo in the number; the real number is 3961. Probably a synonym of Ocotea leucoxylon (Sw.) Laness. Imaging technique: Illustration Original type data: 2961 License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801023 Photo: Jens G. Rohwer
Title: Nectandra albiflora Lundell Accepted name: Nectandra hihua (Ruiz & Pav.) Rohwer Collector: Gentle Collection Number: 4833 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: BRITISH HONDURAS: Toledo District, Botan Creek of the Rio Grande in cohune ridge on stream bank, May 21 1944, Percy H. Gentle 4617, tree, 7 in. diameter; same locality, in cohune ridge, May 23, 1944, Gentle 4636 (type), tree, 9 in. diameter, flowers white; Rio Grande, in high ridge, Sept. 18, 1944, Gentle 4833, tree, 10 in. diameter, flowers pinkish-white, scented; vernacular name, "wild pear." License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802776 Photo: Jens G. Rohwer
Title: Nectandra amara Meisn. Accepted name: Nectandra puberula (Schott) Nees Collector: Martius Collection Number: 1307 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Comments: Rohwer (1993) designated Gardner 614 (K) as lectotype of Nectandra amara Meisn. Imaging technique: Illustration Original type data: In Brasiliae prov. Rio Jan., Pernambuco, Goyaz (Gardn. n. 613! 614! Peckolt n. 259 ! Mart. hb. fl. Bras. n. 1307 ! ex parte, Claussen !). (v. s. in hb. DC., Hook., Vindob., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801025 Photo: Jens G. Rohwer
Title: Nectandra amara Meisn. Accepted name: Nectandra puberula (Schott) Nees Collector: Peckolt Collection Number: 259 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Comments: Rohwer (1993) designated Gardner 614 (K) as lectotype of Nectandra amara Meisn., and mentioned that this collection (Peckolt 259) might be Nectandra warmingii Meisn. Imaging technique: Illustration Original type data: In Brasiliae prov. Rio Jan., Pernambuco, Goyaz (Gardn. n. 613! 614! Peckolt n. 259 ! Mart. hb. fl. Bras. n. 1307 ! ex parte, Claussen !). (v. s. in hb. DC., Hook., Vindob., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801025 Photo: Jens G. Rohwer
Title: Nectandra amara var. chartacea Meisn. Accepted name: Nectandra puberula (Schott) Nees Collector: Claussen Collection Number: 2078 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Comments: Rohwer (1993) designated Schott 5609 (G) as lectotype of Nectandra amara var. chartacea Meisn. Imaging technique: Illustration Original type data: Circa Rio Jan., Cujabà, etc. (Schott n. 5609! Riedel n. 480. Mart. hb. fl. Bras. n. 1307 ! Guillemin n. 667 ! Clausen n. 47 ! 78 ! 2078 !) (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803789 Photo: Jens G. Rohwer
Title: Nectandra amara var. chartacea Meisn. Accepted name: Nectandra puberula (Schott) Nees Collector: Schott Collection Number: 5609 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Comments: Rohwer (1993) designated Schott 5609 (G) as lectotype of Nectandra amara var. chartacea Meisn. Imaging technique: Illustration Original type data: Circa Rio Jan., Cujabà, etc. (Schott n. 5609! Riedel n. 480. Mart. hb. fl. Bras. n. 1307 ! Guillemin n. 667 ! Clausen n. 47 ! 78 ! 2078 !) (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803789 Photo: Jens G. Rohwer
Title: Nectandra amazonum Nees Accepted name: Nectandra amazonum Nees Collector: Martius Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Ocotea Amazonum Mart. in Herb. Brasil. Monac. Crescit in Fluminis Amazonum omni ripa a Parà ad Tabatinga Provinciae Paraënsis, Septembre et Octobre cum floribus primis fructuque maturo iuventa, (de Martius.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801027 Photo: Jens G. Rohwer
Title: Nectandra amazonum var. glabrata Meisn. Accepted name: Nectandra maynensis Mez Collector: Poeppig Collection Number: 2343 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Circa Maynas (Poeppig n. 2343 !). (v. s. in hb. DC., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803790 Photo: Jens G. Rohwer
Title: Nectandra amazonum var. reticulata Meisn. Accepted name: Nectandra warmingii Meisn. Collector: Schott Collection Number: 5607 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Brasil. Prov. Minas Geraës (Vauthier n. 399 ! Schott n. 5607 excl. sp. fructif.). Ocotea incana Schott! in hb. Vindob., ex parte. (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803792 Photo: Jens G. Rohwer
Title: Nectandra ambigua Meisn. Accepted name: Nectandra amazonum Nees Collector: Schomburgk Collection Number: 29 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Guianâ Anglicâ (Schomb. n. 29 !). N. leucantha Nees in hb. Berol.! et Linnaea 21, p. 508. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801028 Photo: Jens G. Rohwer
Title: Nectandra amplifolia Mez Accepted name: Pleurothyrium amplifolium (Mez) Rohwer Collector: Glaziou Collection Number: 17731 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Pleurothyrium Comments: If the label data were correct, this would be the only Pleurothyrium from SE Brazil. However, Glaziou is known to have distributed other collector's material under his own name, often with fabricated label data (see Wurdack, Taxon 19: 911-913. 1970). Imaging technique: Illustration Original type data: Habitat in Brasiliae prov. Rio de Janeiro unde a cl. Glaziou ad virum excellentem Urban nuper transmissa mihi in herbarium communicata. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803085