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: Persea cf. haenkeana Mez Accepted name: Persea cf. haenkeana Mez Collector: Valenzuela Collection Number: 10033 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800011 Photo: Jens G. Rohwer
Title: Persea cf. weberbaueri Mez Accepted name: Persea cf. weberbaueri Mez Collector: Homeier Collection Number: 1153 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801592 Photo: Jens G. Rohwer
Title: Persea corymbosa Mez Accepted name: Persea corymbosa Mez Collector: Castillo Collection Number: 546 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800006 Photo: Jens G. Rohwer
Title: Persea corymbosa Mez Accepted name: Persea corymbosa Mez Collector: Monteagudo Collection Number: 8011 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800006 Photo: Jens G. Rohwer
Title: Persea corymbosa Mez Accepted name: Persea corymbosa Mez Collector: Monteagudo Collection Number: 8011 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800006 Photo: Jens G. Rohwer
Title: Persea spec., Díaz 4484 Accepted name: Persea Mill. Collector: Díaz Collection Number: 4484 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 Photo: Jens G. Rohwer
Title: Persea spec., Díaz 4484 Accepted name: Persea Mill. Collector: Díaz Collection Number: 4484 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 Photo: Jens G. Rohwer
Title: Persea spec., Díaz 9980 Accepted name: Persea Mill. Collector: Díaz Collection Number: 9980 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 Photo: Jens G. Rohwer
Title: Persea spec., Díaz 9980 Accepted name: Persea Mill. Collector: Díaz Collection Number: 9980 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/40005008 Photo: Jens G. Rohwer
Title: Persea dryadum Rohwer Accepted name: Persea dryadum Rohwer Collector: Neill Collection Number: 9519 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Remnants of old flower of holotype from HBG. Imaging technique: Illustration Original type data: TYPE: Ecuador. Zamora-Chinchipe: Nangaritza Canton, ridge crest of Cordillera del Cóndor, above Pachicutza, on disputed Peru–Ecuador border, very dense, sclerophyll “elfin forest” on boggy, peaty soil, 78°35'W, 04°06'S, 1800 m, 5 Dec. 1990, D. Neill & W. Palacios 9519 (holotype, HBG!; isotypes, MO!, QCNE not seen). Paratypes. ECUADOR. Zamora-Chinchipe: Nangaritza Canton, Cima del Cordillera del Cóndor, arriba de Pachicutza, 78°34'W, 04°07'S, 1850 m, 5 Dec. 1990 (imm. fr.), W. Palacios & D. Neill 6511 (HBG, MO, QCNE not seen). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100541293 Photo: Jens G. Rohwer
Title: Persea dryadum Rohwer Accepted name: Persea dryadum Rohwer Collector: Neill Collection Number: 9519 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Very young fruit of holotype from HBG. Imaging technique: Illustration Original type data: TYPE: Ecuador. Zamora-Chinchipe: Nangaritza Canton, ridge crest of Cordillera del Cóndor, above Pachicutza, on disputed Peru–Ecuador border, very dense, sclerophyll “elfin forest” on boggy, peaty soil, 78°35'W, 04°06'S, 1800 m, 5 Dec. 1990, D. Neill & W. Palacios 9519 (holotype, HBG!; isotypes, MO!, QCNE not seen). Paratypes. ECUADOR. Zamora-Chinchipe: Nangaritza Canton, Cima del Cordillera del Cóndor, arriba de Pachicutza, 78°34'W, 04°07'S, 1850 m, 5 Dec. 1990 (imm. fr.), W. Palacios & D. Neill 6511 (HBG, MO, QCNE not seen). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100541293 Photo: Jens G. Rohwer
Title: Persea dryadum Rohwer Accepted name: Persea dryadum Rohwer Collector: Neill Collection Number: 9519 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Stamens and staminodes, from postfloral perianth of holotype. Imaging technique: Illustration Original type data: TYPE: Ecuador. Zamora-Chinchipe: Nangaritza Canton, ridge crest of Cordillera del Cóndor, above Pachicutza, on disputed Peru–Ecuador border, very dense, sclerophyll “elfin forest” on boggy, peaty soil, 78°35'W, 04°06'S, 1800 m, 5 Dec. 1990, D. Neill & W. Palacios 9519 (holotype, HBG!; isotypes, MO!, QCNE not seen). Paratypes. ECUADOR. Zamora-Chinchipe: Nangaritza Canton, Cima del Cordillera del Cóndor, arriba de Pachicutza, 78°34'W, 04°07'S, 1850 m, 5 Dec. 1990 (imm. fr.), W. Palacios & D. Neill 6511 (HBG, MO, QCNE not seen). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100541293 Photo: Jens G. Rohwer
Title: Persea dryadum Rohwer Accepted name: Persea dryadum Rohwer Collector: Palacios Collection Number: 6511 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Very young fruit of paratype from HBG. Imaging technique: Illustration Original type data: TYPE: Ecuador. Zamora-Chinchipe: Nangaritza Canton, ridge crest of Cordillera del Cóndor, above Pachicutza, on disputed Peru–Ecuador border, very dense, sclerophyll “elfin forest” on boggy, peaty soil, 78°35'W, 04°06'S, 1800 m, 5 Dec. 1990, D. Neill & W. Palacios 9519 (holotype, HBG!; isotypes, MO!, QCNE not seen). Paratypes. ECUADOR. Zamora-Chinchipe: Nangaritza Canton, Cima del Cordillera del Cóndor, arriba de Pachicutza, 78°34'W, 04°07'S, 1850 m, 5 Dec. 1990 (imm. fr.), W. Palacios & D. Neill 6511 (HBG, MO, QCNE not seen). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100541293 Photo: Jens G. Rohwer
Title: Persea angustifolia Schott Accepted name: Ocotea lancifolia (Schott) Mez Collector: Schott Collection Number: 44 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: According to Meissner (1864) there was a collection "Schott 5608" in W. This collection has been destroyed in World War II. However, there is a collection labelled "Pohl 5608" from Meissner's herbarium in NY, which is supposed to be this species. Imaging technique: Illustration Original type data: No type indicated, but comment on the whole appendix (p.403): "Henricus Schott, hortulanus Vindobonensis, e Brasilia, quam 1817 et 1818 invisit, ingentem plantarum copiam reportavit. ..." License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801266 Photo: Jens G. Rohwer
Title: Persea caerulea (Ruiz & Pav.) Mez Accepted name: Persea caerulea (Ruiz & Pav.) Mez Collector: Jimenez Collection Number: 3942 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800002 Photo: Jens G. Rohwer
Title: Persea chrysobalanoides Lundell Accepted name: Ocotea chrysobalanoides (Lundell) Lundell Collector: Matuda Collection Number: 5582 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: MEXICO: Chiapas, La Grandeza, in virgin forest, alt. 2016 m., May 19, 1945, Eizi Matuda 5582 (type), tree, 9-10 m. high. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17802639 Photo: Jens G. Rohwer
Title: Persea densiflora Meisn. Accepted name: Ocotea densiflora (Meisn.) Mez Collector: Riedel Collection Number: 2503 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: The material in W has been destroyed in World War II. Imaging technique: Illustration Original type data: In Brasil. prov. Goyaz (Pohl n. 962!, 2904!, 3296!, Riedel n. 2503!, et Bahiensi [Blanch.] s.no.) (v.s. in h. Vind., DC., Mart., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801298 Photo: Jens G. Rohwer
Title: Persea floribunda Schott Accepted name: Ocotea lancifolia (Schott) Mez Collector: Schott Collection Number: s.n. Nomenklaturstatus: not accepted: invalidly published Family: Lauraceae Genus: Ocotea Comments: Schott did not intend to publish this as a valid name. Imaging technique: Illustration Original type data: 22. Persea floribunda Schott. est P. bofo* vol. 2. p. 269. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801307 Photo: Jens G. Rohwer
Title: Persea hypoglauca Nees & Mart. Accepted name: Ocotea hypoglauca (Nees & Mart.) Mez Collector: Martius Collection Number: 903 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Martius 903 was selected as lectotype by Mez (1889). It is also type of Persea scrobiculata Meisn., who rejected P. hypoglauca Nees as nomen confusum. Imaging technique: Illustration Original type data: In summo monte Itacolumí 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/17804547 Photo: Jens G. Rohwer
Title: Persea lancifolia Schott Accepted name: Ocotea lancifolia (Schott) Mez Collector: Schott Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: No type explicitly indicated, but comment on the whole appendix (p.403): "Henricus Schott, hortulanus Vindobonensis, e Brasilia, quam 1817 et 1818 invisit, ingentem plantarum copiam reportavit. ..." License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801325 Photo: Jens G. Rohwer
Title: Persea pachypoda Nees Accepted name: Aiouea pachypoda (Nees) R. Rohde Collector: Ehrenberg Collection Number: 942 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Aiouea Imaging technique: Illustration Original type data: Mejico bei el bruco, C. Ehrenberg n.942. Arbor, fructu eduli, Apugato cimaron incolis. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801356 Photo: Jens G. Rohwer
Title: Persea rufotomentosa Nees & Mart. Accepted name: Persea rufotomentosa Nees & Mart. Collector: Martius Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration Original type data: Ocotea rufotomentosa Mart. in Herb. Bras. Mon. (ex parte.) Patria Brasilia: in sylvis Copaés, et in Tabuleiro, locis editis montanis Serro Frio Provinciae Minarum generalium passim, (de Martius). Floret Augusto. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801380 Photo: Jens G. Rohwer
Title: Persea hypoglauca Nees & Mart. Accepted name: Ocotea hypoglauca (Nees & Mart.) Mez Collector: Martius Collection Number: obs. 903 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Martius 903 was selected as lectotype by Mez (1889). It is also type of Persea scrobiculata Meisn., who rejected P. hypoglauca Nees as nomen confusum. Imaging technique: Illustration Original type data: In summo monte Itacolumí 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/17804547 Photo: Jens G. Rohwer
Title: Persea viburnoides Meisn. Accepted name: Ocotea viburnoides (Meisn.) Mez Collector: Spruce Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Brasiliae prov. Parà prope Santarem (Spruce ! sine no). Persea ? Benth. in pl. Spruc. (v. s. in h. DC., Hook., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17801414