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: Oreodaphne dominicana Meisn. Accepted name: Ocotea dominicana (Meisn.) R.A. Howard Collector: Imray Collection Number: 213 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In ins. Dominicâ (Dr Imray n. 173 ! 213 !). (v. s. in hb. Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804488 
Photo: Jens G. Rohwer
Title: Oreodaphne effusa Meisn. Accepted name: Ocotea helicterifolia (Meisn.) Hemsl. Collector: Jurgensen Collection Number: 906 Nomenklaturstatus: not accepted: misidentification Family: Lauraceae Genus: Ocotea Comments: Clearly not the same species as Jürgensen 906 in Herb. Hook. This specimen is not a type. Imaging technique: Illustration Original type data: In Mexico pr. S. Pedro Nolasco, Talea, etc. (Jürgensen n. 906!). (v. s. in h. Boiss., Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804597 
Photo: Jens G. Rohwer
Title: Oreodaphne effusa Meisn. Accepted name: Ocotea effusa (Meisn.) Hemsl. Collector: Jurgensen Collection Number: 906 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: In K there is also a specimen of Ocotea helicterifolia with the label of Jürgensen 906. Imaging technique: Illustration Original type data: In Mexico pr. S. Pedro Nolasco, Talea, etc. (Jürgensen n. 906!). (v. s. in h. Boiss., Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804597 
Photo: Jens G. Rohwer
Title: Oreodaphne estrellensis Meisn. Accepted name: Ocotea estrellensis (Meisn.) P.L.R. de Moraes Collector: Riedel Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Serra Estrella Brasiliae (Riedel !). (v. s. in h. Petrop.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804855 
Photo: Jens G. Rohwer
Title: Oreodaphne fasciculata Nees Accepted name: Ocotea fasciculata (Nees) Mez Collector: Schomburgk Collection Number: 1286 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: A specimen without number in L is probably a duplicate. Imaging technique: Illustration Original type data: Im brittischen Guiana, am Ufer des Flusses Rupununi. Rich. Schomburgk n. 1286. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804673 
Photo: Jens G. Rohwer
Title: Oreodaphne florulenta Meisn. Accepted name: Ocotea neesiana (Miq.) Kosterm. Collector: Spruce Collection Number: 642 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Specimen in P also with no. 812. Specimens in K later determined as Oreodaphne confusa by Meissner. Imaging technique: Illustration Original type data: Circa Santarem ad fl. Amazonum, prov. Parà (Spruce Ocotea 1 !) (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804486 
Photo: Jens G. Rohwer
Title: Oreodaphne florulenta Meisn. Accepted name: Ocotea neesiana (Miq.) Kosterm. Collector: Spruce Collection Number: 647 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: Specimen in P also with no. 812. Specimens in K later determined as Oreodaphne confusa by Meissner. Imaging technique: Illustration Original type data: Circa Santarem ad fl. Amazonum, prov. Parà (Spruce Ocotea 1 !) (v. s.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804486 
Photo: Jens G. Rohwer
Title: Oreodaphne fragrans Meisn. Accepted name: Mespilodaphne staminea (Griseb.) Trofimov Collector: Purdie Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: The type specimens is one of the syntypes of Nectandra staminea Griseb. = Mespilodapne staminea (Griseb.) Trofimov. Nectandra staminea Griseb. is not cited by Meissner, therefore his description may be considered independent, not a superfluous renaming. Imaging technique: Illustration Original type data: In Jamaicâ (Purdie !). (v.s. in hb. Hook. et DC.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804694 
Photo: Jens G. Rohwer
Title: Oreodaphne frondosa Meisn. Accepted name: Ocotea frondosa (Meisn.) Mez Collector: Regnell Collection Number: III 80 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Crescit ad Caldas et Uberaba in prov. Minarum, Oct. Nov. florens: Regnell III. 80. Oreas. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804763 
Photo: Jens G. Rohwer
Title: Oreodaphne glaberrima Meisn. Accepted name: Ocotea lancifolia (Schott) Mez Collector: Pohl Collection Number: 2717 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Brasiliâ (Pohl n.2717 !). (v. s. in h. Vindob.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804165 
Photo: Jens G. Rohwer
Title: Oreodaphne glaberrima var. angustifolia Meisn. Accepted name: Ocotea lancifolia (Schott) Mez Collector: Regnell Collection Number: I 397 bis ♂ Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Habitat ad Caldas, prov. Minarum: Regnell (♂ et ♀, I. n. 397 bis). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100388541 
Photo: Jens G. Rohwer
Title: Oreodaphne glaberrima var. angustifolia Meisn. Accepted name: Ocotea lancifolia (Schott) Mez Collector: Regnell Collection Number: I 397 bis ♀ Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Habitat ad Caldas, prov. Minarum: Regnell (♂ et ♀, I. n. 397 bis). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100388541 
Photo: Jens G. Rohwer
Title: Oreodaphne glauca Nees & Mart. Accepted name: Ocotea glauca (Nees & Mart.) Mez Collector: Sello Collection Number: 434 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: In Systema Laurinarum, p.423 (1836) Nees cites Myginda brasiliensis Spreng., Syst. Veg. (ed. 16) 1: 496. 1824 in synonymy. This would have been an older name. Imaging technique: Illustration Original type data: In Brasilia tropica; Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804707 
Photo: Jens G. Rohwer
Title: Oreodaphne glaucina Meisn. Accepted name: Ocotea notata (Nees & Mart.) Mez Collector: Blanchet Collection Number: 3349 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: The syntype Blanchet 3349 is repeatedly numbered "3439" in G. The NY specimen of this syntype appears to be Ocotea acutifolia (check!). The syntype Gardner 1394 is also syntype of Mespilodaphne gardneri Meisn., but note that Meissner wrote "ex parte". Imaging technique: Illustration Original type data: In Brasiliâ trop. prov. Bahiens. et Rio Jan. (Riedel ! Blanchet n. 3577 ! 3349 ! Gardner n. 1394 ! ex parte, 612 !). (v. s. sine fr. in h. DC. Hook., Vind., Petrop. etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804166 
Photo: Jens G. Rohwer
Title: Oreodaphne gracilis Meisn. Accepted name: Ocotea gracilis (Meisn.) Mez Collector: Spruce Collection Number: 2615 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Ad flum. Uaupès et rio Negro Brasil. bor. (Spruce n. 2615 ! 3081 !) et in Guianâ Angl. (Schomb. n. 976 !). (v. s. in hb. DC., Hook., Vindob., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804621 
Photo: Jens G. Rohwer
Title: Oreodaphne gracilis Meisn. Accepted name: Ocotea gracilis (Meisn.) Mez Collector: Spruce Collection Number: 3081 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Ad flum. Uaupès et rio Negro Brasil. bor. (Spruce n. 2615 ! 3081 !) et in Guianâ Angl. (Schomb. n. 976 !). (v. s. in hb. DC., Hook., Vindob., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804621 
Photo: Jens G. Rohwer
Title: Oreodaphne helicterifolia Meisn. Accepted name: Ocotea helicterifolia (Meisn.) Hemsl. Collector: Linden Collection Number: 1641 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Mexici prov. Chiapas (Linden n. 1641 !). (v. s. in hb. DC., Boiss., Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804680 
Photo: Jens G. Rohwer
Title: Oreodaphne hostmanniana Miq. Accepted name: Ocotea puberula (Rich.) Nees Collector: Hostmann Collection Number: 1286 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Hostm. et Kappl. Herb. 1286. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804167 
Photo: Jens G. Rohwer
Title: Oreodaphne jacobinae Meisn. Accepted name: Ocotea velutina (Mart. ex Nees) Rohwer Collector: Blanchet Collection Number: 2554 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Serrâ de Jacobinâ, prov. Bahiens. (Blanch. n. 2554 !). (v. s. in h. DC., Hook., etc.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804168 
Photo: Jens G. Rohwer
Title: Oreodaphne jacquinii Meisn. Accepted name: Ocotea aciphylla (Nees) Mez Collector: Isert Collection Number: s.n. Nomenklaturstatus: not accepted: superfluous renaming (illegitimate) Family: Lauraceae Genus: Ocotea Comments: Meissner spelt the epithet "Jaquini"; corrected in accordance with the Code. In the description of Oreodaphne jacquinii, Meissner cited "Laurus Martinicensis Jacq.! Coll. 2, p. 109, t. 5 f. 2 Willd. sp. 2, p.481" in synonymy. This makes his name illegitimate. Laurus martinicensis Jacq. currently cannot be identified with certainty. Meissner interpreted it in the sense of a species that is most likely a synonym of Ocotea aciphylla. The fragments in the Meissner herbarium in NY (NY 00355696) may be from the holotype that Meissner still had seen. Jacquin's figure shows a single leaf that does not allow to tell which species it is, and the type in W apparently has been lost in World War 2. Imaging technique: Illustration Original type data: In Martinicâ (Aquart.!). Laurus Martinicensis Jacq.! Coll. 2. p. 109, t. 5, f. 2. Willd. sp. 2, p. 481. (v. s. in hb. Jacq.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804864 
Photo: Jens G. Rohwer
Title: Oreodaphne japurensis var. egensis Meisn. Accepted name: Ocotea neesiana (Miq.) Kosterm. Collector: Poeppig Collection Number: 1845 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: Circa Ega ad fl. Amazonum (Poeppig !). (v. s. in h. Boiss.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100549800 
Photo: Jens G. Rohwer
Title: Oreodaphne klotzschiana Nees Accepted name: Ocotea klotzschiana (Nees) Hemsl. Collector: Ehrenberg Collection Number: 943 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: A specimen with no. 493 in C appears to be the same; probably just an error in copying the number. Imaging technique: Illustration Original type data: Mejico. Bei El Banco. (C. Ehrenberg n. 943.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804546 
Photo: Jens G. Rohwer
Title: Oreodaphne kunthiana Meisn. Accepted name: Ocotea nutans (Nees) Mez Collector: Sello Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Brasiliâ merid. (Sellow !).
(v. s. in hb. Kunth.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50243217 
Photo: Jens G. Rohwer
Title: Oreodaphne lanata Nees & Mart. Accepted name: Ocotea lanata (Nees & Mart.) Mez Collector: Sello Collection Number: 458 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Sello 458 erroneously cited as 3458 by Mez 1889. Imaging technique: Illustration Original type data: In Brasilia; Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804496 
