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 velutina Mart. ex Nees Accepted name: Ocotea velutina (Mart. ex Nees) Rohwer Collector: Martius Collection Number: s.n. Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Rohwer (1986) remarked that the indication "Prov. Flum. Nigri" cannot be correct (at least not in the modern sense), but his suggestion that the material was probably from Bahia was not correct, either. The Sello numbers need to be checked again. Nees (1836) had written "5367", whereas the number clearly reads "5867" on the specimen B 100185415. Imaging technique: Illustration Original type data: Ocotea velutina Mart. in Herb. Bras. Monac. In summo Brasiliae monte Itambé, iugi Serro frio Provinciae Fluminis nigri, Maio mense, (de Martius); aliis in locis Brasiliae (accuratius non indicatis) cum floribus et fructu maturo legit Sellow. (Herb. Reg. Berol. n. 1384, XCIV, et XCV. (5367) et 5928). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804177 Photo: Jens G. Rohwer
Title: Oreodaphne velutina Mart. ex Nees Accepted name: Ocotea velutina (Mart. ex Nees) Rohwer Collector: Martius Collection Number: obs. 1183 Nomenklaturstatus: not accepted: homotypic (nomenclatural) synonym Family: Lauraceae Genus: Ocotea Comments: Rohwer (1986) remarked that the indication "Prov. Flum. Nigri" cannot be correct (at least not in the modern sense), but his suggestion that the material was probably from Bahia was not correct, either. The Sello numbers need to be checked again. Nees (1836) had written "5367", whereas the number clearly reads "5867" on the specimen B 100185415. Imaging technique: Illustration Original type data: Ocotea velutina Mart. in Herb. Bras. Monac. In summo Brasiliae monte Itambé, iugi Serro frio Provinciae Fluminis nigri, Maio mense, (de Martius); aliis in locis Brasiliae (accuratius non indicatis) cum floribus et fructu maturo legit Sellow. (Herb. Reg. Berol. n. 1384, XCIV, et XCV. (5367) et 5928). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804177 Photo: Jens G. Rohwer
Title: Oreodaphne velutina var. bullata Meisn. Accepted name: Ocotea tabacifolia (Meisn.) Rohwer Collector: Langsdorff Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In prov. Minas Ger. (Langsdorff! Ackermann!). (v. s. in hb. Hook. et Mart.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804177 Photo: Jens G. Rohwer
Title: Oreodaphne velutina var. glabrata Meisn. Accepted name: Ocotea velloziana (Meisn.) Mez Collector: Claussen Collection Number: 442 Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Comments: The number "242" cited by Meissner is clearly an error. The material that he annotated has the number 442. Imaging technique: Illustration Original type data: In prov. Minas Geraes, ex Claussen n. 242! (v.s. in h. Boiss. et Hook.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804178 Photo: Jens G. Rohwer
Title: Oreodaphne verruculosa Meisn. Accepted name: Ocotea daphnifolia (Meisn.) Mez Collector: Riedel Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Ocotea Imaging technique: Illustration Original type data: In Brasiliâ (Riedel !). (v. s. in hb. Petrop.) License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804600 Photo: Jens G. Rohwer
Title: Oreodaphne vesiculosa Nees & Mart. Accepted name: Aiouea amoena (Nees & Mart.) R. Rohde Collector: Sello Collection Number: s.n. Nomenklaturstatus: not accepted: heterotypic (taxonomic) synonym Family: Lauraceae Genus: Aiouea Imaging technique: Illustration Original type data: In Brasilia cum fructu absque floribus; Sellow. License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17804512 Photo: Jens G. Rohwer
Title: Paraia bracteata Rohwer, H.G.Richt. & van der Werff Accepted name: Paraia bracteata Rohwer, H.G. Richt. & van der Werff Collector: Cid Collection Number: 1890 Nomenklaturstatus: accepted Family: Lauraceae Genus: Paraia Comments: Drawn on DIN A4 paper (210 x 297 mm). Imaging technique: Illustration Original type data: TYPE: Brazil. Pará: Mun. Oriximiná, Rio Trombetas, right bank, Porto Trombetas, road to Mineração Rio Norte, km 60, beyond Bauxite mine, 29 Aug. 1980 (fl, fr), Cid et al. 1890 (holotype, MO; isotypes, HBG, INPA 96058 not seen, NY). Additional specimens examined. Brazil. Amazonas: Manaus–Itacoatiara Highway, Colonia Santo Antonio, 27 Oct. 1966 (fr), Allen & L. Coêlho 330 (HBG, NY); Rio Cuieiras–Manaus trail, km 1, 6 Apr. 1974 (fl), Campbell et al. in Prance 21091 (HBG, MO, NY); Manaus, Estrada de Flores (Rosa de Maio), Feb. 1974 (st), D. Coêlho s.n. (HBG, INPA 46534), near Igarapé Mindú, 12 July 1929 (fl), Ducke s.n. (U), along road to Aleixo, 12 Aug.–1 Sep. 1936 (fr), Krukoff 7996 (F, NY); Rio Cuieiras, 2 km below mouth of Rio Brancinho, 11 Sep. 1973 (fl), Prance et al. 17749 (HBG, NY); Manaus, Igarapé do Bindá, 19 Oct. 1961 (fr), Rodrigues & Chagas 2666 ≡ 3466 (HBG, INPA 10016, NY); Manaus–Caracaraí road, km 19, 20 Sep. 1961 (fr), Rudrigues & L. Coêlho 3317 (NY). Pará: Belém, Instituto Agronômico do Norte, 3 Aug. 1962 (fl juv.), Allen 79 (NY); Mun. Oriximiná, Rio Trombetas, left bank, at Lago Moura, 22 Aug. 1980 (fl), Cid et al. 1825 (HBG, MO); Lago Cuçarí, Planalto de Santarém, area of forest inventory by IAN, SPVEA, and FAO, 15 Apr. 1955 (fl), Fróes 31668 (NY); Mocambo, EMBRAPA Forest Reserve, ca. 10 km from Belém, 13 Nov. 1984 (st), Gentry 48956 (MO), 10 Oct. 1966 (fr), Pires & N. T. Silva 10245 (HBG), 28 Sep. 1967 (fr imm.), Pires & N. T. Silva 10947 (NY), 2 Sep. 1967 (fr), Pires & N. T. Silva 10949 (NY), 3 Aug. 1973 (fl), Pires 13219 (HBG, NY); Mun. Almerim, Estrada do Pedrão, km 40, 12 Nov. 1978 (fr), Santos 284 (F); Serra dos Carajás, 13 km from AMZA headquaters, road to sawmill, 18 Oct. 1977 (fr), A. S. Silva et al. 72 (HBG, MO); Santarém, Estrada do Palhão, km 35, near Igarapé Curupira camp, 24 Aug. 1969 (fr), M. Silva & Souza 2402 (HBG, MO, NY); Rio Jarí, Monte Dourado, Planalto B., between Pilão and Repartimento, 28 Oct. 1968 (fr), N. T. Silva 1328 (HBG, NY); Jarí, road from Bandeira to Pilão, km 39, 18 June 1969 (fl, fr imm.) N. T. Silva 2220 (HBG, NY). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/17805578 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Díaz Collection Number: 8801 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Díaz Collection Number: 8801 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Díaz Collection Number: 8801 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Fuentes Collection Number: 12248 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Gentry Collection Number: 53980 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Pérez Collection Number: 2681 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Valenzuela Collection Number: 6871 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: Valenzuela Collection Number: 6871 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. areolatocostae (C.K. Allen) van der Werff Accepted name: Persea aff. areolatocostae (C.K. Allen) van der Werff Collector: van der Werff Collection Number: 21253 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/17804735 Photo: Jens G. Rohwer
Title: Persea aff. cuneata Meisn. Accepted name: Persea aff. cuneata Meisn. Collector: Hilty Collection Number: Mr-1 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/17801295 Photo: Jens G. Rohwer
Title: Persea aff. cuneata Meisn. Accepted name: Persea aff. cuneata Meisn. Collector: Hilty Collection Number: Mr-1 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/17801295 Photo: Jens G. Rohwer
Title: Persea aff. willdenovii Kosterm. Accepted name: Persea aff. willdenovii Kosterm. Collector: Serrano Collection Number: 6946 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/17803407 Photo: Jens G. Rohwer
Title: Persea aff. subcordata (Ruiz & Pav.) Nees Accepted name: Persea aff. subcordata (Ruiz & Pav.) Nees Collector: Fuentes Collection Number: 10763 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/17801394 Photo: Jens G. Rohwer
Title: Persea aff. subcordata (Ruiz & Pav.) Nees Accepted name: Persea aff. subcordata (Ruiz & Pav.) Nees Collector: Fuentes Collection Number: 10763 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/17801394 Photo: Jens G. Rohwer
Title: Persea albiramea van der Werff Accepted name: Persea albiramea van der Werff Collector: Thomsen Collection Number: 491 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration Original type data: TYPE: Costa Rica. Puntarenas: Canton de Osa, Rancho Quemado, Aug. 1991, J. Marin 128 (holotype, MO; isotype, INB). Paratypes. COSTA RICA. Puntarenas: Canton de Osa, G. Herrera & J. Marin 4980 (INB, MO). B. Hammel & J. Marin 18315 (INB, MO), G. Herrera 5019 (INB, MO), K. Thomsen 491 (MO). PANAMA. Darién: Rio Tuquesa, T. Croat 27170 (MO). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50225273 Photo: Jens G. Rohwer
Title: Persea albiramea van der Werff Accepted name: Persea albiramea van der Werff Collector: Thomsen Collection Number: 491 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Imaging technique: Illustration Original type data: TYPE: Costa Rica. Puntarenas: Canton de Osa, Rancho Quemado, Aug. 1991, J. Marin 128 (holotype, MO; isotype, INB). Paratypes. COSTA RICA. Puntarenas: Canton de Osa, G. Herrera & J. Marin 4980 (INB, MO). B. Hammel & J. Marin 18315 (INB, MO), G. Herrera 5019 (INB, MO), K. Thomsen 491 (MO). PANAMA. Darién: Rio Tuquesa, T. Croat 27170 (MO). License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/50225273 Photo: Jens G. Rohwer
Title: Persea alpigena var. harrisii (Mez) L.E. Kopp Accepted name: Persea alpigena (Sw.) Spreng. Collector: Harris Collection Number: 5335 Nomenklaturstatus: accepted Family: Lauraceae Genus: Persea Comments: Not a type; the type numbers of Persea harrisii Mez, the basionym of P. alpigena var. harrisii (Mez) L.E. Kopp, are Harris and Watt in Herb. bot. Dept. 5255 and 5734. Imaging technique: Illustration License: CC-BY-SA-4.0 Copyright: Jens G. Rohwer Tropicos Link: https://tropicos.org/name/100371903