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: Camphoromoea litsaeifolia Meisn. Accepted name: Ocotea gracilis (Meisn.) Mez Collector: Riedel Collection Number: 1288 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of isotype Riedel 1288 (G) The spelling of the epithet needs to be corrected to "litseifolia" in accordance with Art. 60.10 of the International Code of Nomenclature (2018), as it is derived from the genus Litsea. Imaging technique: Illustration Original type data: (v. s. in hb. Petrop.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804785 
Photo: Jens G. Rohwer
Title: Camphoromoea ovalifolia Meisn. Accepted name: Ocotea lindbergii Mez Collector: Lindberg Collection Number: 460a Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of isotype Lindberg 460a (BR) Imaging technique: Illustration Original type data: In Brasiliâ (Lindberg n. 460, a !). (v.s. in hb. Vindob. et Mart.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804766 
Photo: Jens G. Rohwer
Title: Camphoromoea rhamnoides Meisn. Accepted name: Ocotea divaricata (Nees) Mez Collector: Riedel Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of isosyntype Riedel s.n. (B) Rohwer 1986 had seen only the Riedel syntypes, with Meissner's handwriting. In Meissner's herbarium in NY there is a specimen of Schott (not Pohl) 5597 annotated as this species by Meissner. Imaging technique: Illustration Original type data: In Brasiliâ circa Tejuco et Mandioccam (Riedel ! Mikan n. 3 ! Pohl n. 5597 !). (v. s. in hb. Petrop. et Vindob.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50230116 
Photo: Jens G. Rohwer
Title: Camphoromoea subtriplinervia Nees Accepted name: Ocotea camphoromoea Rohwer Collector: Martius Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of holo(?)type Martius s.n. (M) Imaging technique: Illustration Original type data: Crescit in sylvis secus flumen Amazonum in Provincia Paraënsi Brasiliae. Floret fructusque simul dimittit maturos Septembre, (de Martius.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804540 
Photo: Jens G. Rohwer
Title: Camphoromoea venulosa Nees Accepted name: Ocotea teleiandra (Meisn.) Mez Collector: Martius Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of holo(?)type Martius s.n. (M) On the label of a possible isotype in GZU it says "prov. Paraensis". Imaging technique: Illustration Original type data: Persea laxa Mart. in Herb. Bras. Monac. (ex parte.). Crescit in sylvis Montis formosi provinciae S. Pauli Brasiliae, alt. 2500', ubi Decembre primos flores explicantem legit de Martius. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804523 
Photo: Jens G. Rohwer
Title: Camphoromoea zizyphoides Meisn. Accepted name: Ocotea divaricata (Nees) Mez Collector: Riedel Collection Number: 129 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Floral details of isotype Riedel 129 (P) Imaging technique: Illustration Original type data: In Brasiliâ circa Mandioccam (Riedel n. 129 !). (v. s. in hb. Petrop.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50230117 
Photo: Jens G. Rohwer
Title: Cassytha filiformis L. Accepted name: Cassytha filiformis L. Collector: Britton Collection Number: 14806 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cassytha Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800538 
Photo: Jens G. Rohwer
Title: Cassytha filiformis L. Accepted name: Cassytha filiformis L. Collector: Zanoni Collection Number: 24676 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cassytha Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17800538 
Photo: Jens G. Rohwer
Title: cf. Persea, Neill 14443 Accepted name: cf. Persea Mill. Collector: Neill Collection Number: 14443 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: cf. Persea, Toasa 9002 Accepted name: cf. Persea Mill. Collector: Toasa Collection Number: 9002 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: Chlorocardium rodiei (R.H. Schomb.) Rohwer, H.G. Richt. & van der Werff Accepted name: Chlorocardium rodiei (R.H. Schomb.) Rohwer, H.G. Richt. & van der Werff Collector: Pipoly Collection Number: 7492, 7530, 7536 Nomenklaturstatus: accepted Family: Lauraceae Genus: Chlorocardium Comments: Based on three collections, Pipoly 7491, 7530 and 7536. Drawn on DIN A4 paper (210 x 297 mm). Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805576 
Photo: Jens G. Rohwer
Title: Cinnadenia malayana Kosterm. Accepted name: Cinnadenia malayana Kosterm. Collector: Sohadi Collection Number: FRI 14593 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnadenia Comments: Floral details of holotype Sohadi, F.R.I. 14593 (L) Imaging technique: Illustration Original type data: Typus : F.R.I. 14593, L. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805184 
Photo: Jens G. Rohwer
Title: Cinnadenia malayana Kosterm. Accepted name: Cinnadenia malayana Kosterm. Collector: Sohadi Collection Number: FRI 14593 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnadenia Comments: Floral details of holotype Sohadi, F.R.I. 14593 (L) Imaging technique: Illustration Original type data: Typus : F.R.I. 14593, L. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805184 
Photo: Jens G. Rohwer
Title: Cinnadenia malayana Kosterm. Accepted name: Cinnadenia malayana Kosterm. Collector: Sohadi Collection Number: FRI 14593 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnadenia Comments: Inflorescence diagram of holotype Sohadi s.n., F.R.I. 14593 (L) Imaging technique: Illustration Original type data: Typus : F.R.I. 14593, L. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805184 
Photo: Jens G. Rohwer
Title: Cinnadenia paniculata (Hook. f.) Kosterm. Accepted name: Cinnadenia paniculata (Hook. f.) Kosterm. Collector: King Collection Number: s.n. Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnadenia Comments: Floral details of L.1795403, barcode L 0308365 Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804768 
Photo: Jens G. Rohwer
Title: Cinnamomum aff. polyadelphum (Lour.) Kosterm. Accepted name: Cinnamomum aff. polyadelphum (Lour.) Kosterm. Collector: coll.ign. Collection Number: VH 433 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804968 
Photo: Jens G. Rohwer
Title: Cinnamomum aromaticum Nees Accepted name: Cinnamomum aromaticum Nees Collector: Liogier Collection Number: 37268 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805773 
Photo: Jens G. Rohwer
Title: Cinnamomum bejolghota (Buch.-Ham.) Sweet Accepted name: Cinnamomum bejolghota (Buch.-Ham.) Sweet Collector: Matthew Collection Number: 6434 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806426 
Photo: Jens G. Rohwer
Title: Cinnamomum bejolghota (Buch.-Ham.) Sweet Accepted name: Cinnamomum bejolghota (Buch.-Ham.) Sweet Collector: Matthew Collection Number: 6434 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806426 
Photo: Jens G. Rohwer
Title: Cinnamomum capparu-coronde Blume Accepted name: Cinnamomum capparu-coronde Blume Collector: Balakrishnan Collection Number: NBK1226 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100311592 
Photo: Jens G. Rohwer
Title: Cinnamomum cf. aromaticum Nees Accepted name: Cinnamomum cf. aromaticum Nees Collector: Jack Collection Number: 4158 Nomenklaturstatus: accepted Family: Lauraceae Genus: Cinnamomum Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805773 
Photo: Jens G. Rohwer
Title: Cinnamomum falcatum (Mez) R.A. Howard? Accepted name: Aiouea Aubl.? Collector: Duss Collection Number: 3889 Nomenklaturstatus: accepted Family: Lauraceae Genus: Aiouea Comments: Uncertain if the same species as the type of Ocotea falcata Mez. Transferred to Cinnamomum by R.A. Howard (1981), but subsequently the American Cinnamomum species have been transferred to Aiouea by Rohde et al. (2017). Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17806494 
Photo: Jens G. Rohwer
Title: Aiouea grisebachii (Lorea-Hern.) Rohwer Accepted name: Aiouea grisebachii (Lorea-Hern.) Rohwer Collector: Ekman Collection Number: 16389 Nomenklaturstatus: not accepted: superfluous renaming (illegitimate) Family: Lauraceae Genus: Aiouea Comments: Aiouea grisebachii (Lorea-Hern.) Rohwer includes the type of Phoebe triplinervis Griseb. (not Laurus triplinervis Ruiz & Pav.), and therefore has to be called Aiouea triplinervis, even though this is likely to create considerable confusion. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100469874 
Photo: Jens G. Rohwer
Title: Aiouea grisebachii (Lorea-Hern.) Rohwer Accepted name: Aiouea grisebachii (Lorea-Hern.) Rohwer Collector: Alain Collection Number: 6109 Nomenklaturstatus: not accepted: superfluous renaming (illegitimate) Family: Lauraceae Genus: Aiouea Comments: Aiouea grisebachii (Lorea-Hern.) Rohwer includes the type of Phoebe triplinervis Griseb. (not Laurus triplinervis Ruiz & Pav.), and therefore has to be called Aiouea triplinervis, even though this is likely to create considerable confusion. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100469874 
