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 krugii Mez Accepted name: Nectandra krugii Mez Collector: Sintenis Collection Number: 1984 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Hab. in Antillarum sylvis: Puerto-Rico: Sintenis n. 1984, 4004, 6450; Dominica: Imray n. 214. Floret Novembri, fruct. Martio. (V. s. in herb. Goetting., Kew., Krug. et Urban.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800073 Photo: Jens G. Rohwer
Title: Nectandra krugii Mez Accepted name: Nectandra krugii Mez Collector: Sintenis Collection Number: 4004 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Hab. in Antillarum sylvis: Puerto-Rico: Sintenis n. 1984, 4004, 6450; Dominica: Imray n. 214. Floret Novembri, fruct. Martio. (V. s. in herb. Goetting., Kew., Krug. et Urban.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800073 Photo: Jens G. Rohwer
Title: Nectandra labouriaviana Machado Accepted name: Nectandra oppositifolia Nees & Mart. Collector: Machado Collection Number: RB68240 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Habitat in ripa maritima e Brasiliensibus "restinga" nuncupata ad Tijuca (Rio de Janeiro), legit. O. Machado 21-III-1946. Herb. J. Bot. R. Jan., n° 68.240 (Typus). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802792 Photo: Jens G. Rohwer
Title: Nectandra laevis Mez Accepted name: Nectandra membranacea (Sw.) Griseb. Collector: Jelski Collection Number: 186 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Hab. in Andibus Peruviae ad Tambillo: Jelski n. 186 et Boliviae ad Mapiri: Rusby n. 705. Floret Aprili, Julio. (V. s. in collect. cll. Jelskii et Rusby.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800074 Photo: Jens G. Rohwer
Title: Nectandra lanceolata var. grandifolia Mez Accepted name: Nectandra lanceolata Nees & Mart. Collector: Hassler Collection Number: 4876 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Comments: The numbers indicated by Mez refer to Hassler collections. Rohwer (1993) designated Hassler 4484 (G) as lectotype. Imaging technique: Illustration Original type data: In silva campestre pr. flumen Corrientes, Sept., n. 4484; in dumeto pr. Igatimi, Oct., n. 4876. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803812 Photo: Jens G. Rohwer
Title: Nectandra lanceolata var. parvifolia Mez Accepted name: Nectandra lanceolata Nees & Mart. Collector: Hassler Collection Number: 4590 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Arbor 6-10 m. diam 0,3-0,5 m. petala alba, in silva aprica pr. Curuguaty, Sept., [Hassler] n. 4590. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803814 Photo: Jens G. Rohwer
Title: Nectandra larensis Lasser Accepted name: Nectandra turbacensis (Kunth) Nees Collector: Saer Collection Number: 52 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Tipo en el Herbario Nacional de Venezuela, colectada por José Saer, (n. 52), a orillas del río Turbio, Edo. Lara. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802793 Photo: Jens G. Rohwer
Title: Nectandra laurel var. glabrescens Meisn. Accepted name: Nectandra laurel Klotzsch ex Nees Collector: Mathews Collection Number: 180 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Peruviae Prov. Chachapoyas (Matthews n. 180 !). (v. s. in hb. Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803816 Photo: Jens G. Rohwer
Title: Nectandra laurel Klotzsch ex Nees Accepted name: Nectandra laurel Klotzsch ex Nees Collector: Moritz Collection Number: 1218 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Columbia. Moritz n. 1218. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801070 Photo: Jens G. Rohwer
Title: Nectandra laurel var. triquetra Meisn. Accepted name: Nectandra reticulata (Ruiz & Pav.) Mez Collector: Mathews Collection Number: 3032 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Peruviâ (Matth. n. 3032 ! in hb. Hook.). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803817 Photo: Jens G. Rohwer
Title: Nectandra leucantha var. attenuata Meisn. Accepted name: Nectandra hihua (Ruiz & Pav.) Rohwer Collector: Gardner Collection Number: 5150 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Brasiliae prov. Minas Geraës (Gardn. n. 5150 !) et Venezuela (Fendler n. 2393 !). (v. s. in h. DC., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803818 Photo: Jens G. Rohwer
Title: Nectandra leucantha var. guianensis Meisn. Accepted name: Nectandra hihua (Ruiz & Pav.) Rohwer Collector: Schomburgk Collection Number: 191 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Guianâ Angl. (Schomb. n. 191 !). (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803819 Photo: Jens G. Rohwer
Title: Nectandra leucantha Nees & Mart. Accepted name: Nectandra leucantha Nees & Mart. Collector: Martius Collection Number: 1704 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In regione Camporum Provinciae Minarum Generalium; a Martius. In Brasilia, loco non adnotato; Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801074 Photo: Jens G. Rohwer
Title: Nectandra leucantha var. peruviana Meisn. Accepted name: Nectandra hihua (Ruiz & Pav.) Rohwer Collector: Ruiz Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Nectandra Comments: Meissner based N. leucantha var. Peruviana on Laurus hihua Ruiz & Pav. Imaging technique: Illustration Original type data: Habitat in Huayaquilensibus nemoribus. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803820 Photo: Jens G. Rohwer
Title: Nectandra leucothyrsus Meisn. Accepted name: Nectandra membranacea (Sw.) Griseb. Collector: Peckolt Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Brasiliâ circa Cantagallo (Peckolt n. 84 !). Vernacule Canella branca do Brejo (v. s. in hb. Mart.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801076 Photo: Jens G. Rohwer
Title: Nectandra lineatifolia (Ruiz & Pav.) Mez Accepted name: Nectandra lineatifolia (Ruiz & Pav.) Mez Collector: Ruiz Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Habitat in Peruviae Andium nemoribus ad Chinchao. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804085 Photo: Jens G. Rohwer
Title: Nectandra loeseneri Mez Accepted name: Damburneya salicifolia (Kunth) Trofimov & Rohwer Collector: Seler Collection Number: 3696 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Damburneya Comments: The original spelling "Loesenerii" has to be corrected in accordance with the International Code of Nomenclature; the spelling "loesneri" on the drawing is an error. Imaging technique: Illustration Original type data: Mexico, prov. Vera-Cruz, in silva primaeva Cazones inter et Tuxpam : Seler n° 3696. — Floret Dezembri, Januario. (Herb. Berol.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801555 Photo: Jens G. Rohwer
Title: Nectandra longicuspis Lundell Accepted name: Ocotea bourgeauviana (Mez) van der Werff Collector: Contreras Collection Number: 11186 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Guatemala: Dept. Izabal, El Estor, in high forest, March 7, 1972, Elias Contreras 11186 (LL, type), tree, 40 ft. high, 8 in. diam., flowers yellowish. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803684 Photo: Jens G. Rohwer
Title: Nectandra longifolia var. nitida Meisn. Accepted name: Nectandra leucantha Nees & Mart. Collector: Gardner Collection Number: 5153 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: In Brasiliae prov. Minas Geraës (Gardn. n. 5153 !). (v. s. in hb. Hook., Vindob.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803821 Photo: Jens G. Rohwer
Title: Nectandra longifolia (Ruiz & Pav.) Nees Accepted name: Nectandra lineatifolia (Ruiz & Pav.) Mez Collector: Ruiz Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Nectandra Comments: This specimen from K erroneously bears a label of Laurus longifolia (= Nectandra longifolia), which is quite different. Imaging technique: Illustration Original type data: Habitat in Peruviae Andium nemoribus ad Chinchao. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804085 Photo: Jens G. Rohwer
Title: Nectandra magnifolia Lundell Accepted name: Ocotea magnifolia (Lundell) Lundell Collector: Contreras Collection Number: 7865 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Guatemala: Dept. Alta Verapaz, Chahal, on Sepur Ranch, bordering Chahal River, 3 km. south, Oct. 8, 1968, Elias Contreras 7865 (LL, type), tree, 70 ft. high, 18 in. diam., flowers yellow-green, "laurel." License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803447 Photo: Jens G. Rohwer
Title: Nectandra magnoliifolia Meisn. Accepted name: Nectandra canescens Nees & Mart. Collector: Riedel Collection Number: 1323 Nomenklaturstatus: not accepted: homonym (illegitimate) Family: Lauraceae Genus: Nectandra Comments: Illegitimate because of Nectandra magnoliifolia A. Rich. The original spelling "magnoliaefolia" changed in accordance with the International Code of Nomenclature. Imaging technique: Illustration Original type data: In Brasil. prov. Rio Negro et Parà (Riedel n. 1323 ! Spruce n. 1693 !). (v. s. in hb. DC., Hook., Petrop.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801083 Photo: Jens G. Rohwer
Title: Nectandra maranonensis O.C. Schmidt Accepted name: Nectandra hihua (Ruiz & Pav.) Rohwer Collector: Tessmann Collection Number: 4833 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Ostperu: Oberer Marañon, Mündung des Santiago, ca. 160 m ü. d. M.; flutfreier Hochwald unterhalb des Pongo de Manseriche (blühend 29. Dezember 1924 — G. Tessmann n. 4833). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802263 Photo: Jens G. Rohwer
Title: Nectandra matogrossensis Coe-Teix. Accepted name: Nectandra matogrossensis Coe-Teix. Collector: Kuhlmann Collection Number: 272 Nomenklaturstatus: accepted Family: Lauraceae Genus: Nectandra Imaging technique: Illustration Original type data: Tipo — J. G. Kuhlmann 272, Brasil, Mato Grosso, rio Arinos, XII-1914 (fl.) (NY, holótipo). Material examinado — BRASIL: Mato Grosso: rio Arinos, mata nas margens do rio, terra firme, ?-XII-1914, fl., . G. Kuhlmann 272 (NY, holótipo). Bahia: Guaratinga, plantação de cacau, 8-IX-1966, fl. e fr. imat., Belém & Pinheiro 2725 (NY). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17803959