Myrcia selloi (Spreng.) N.Silveira

De Lannoy, Laura C., Goldenberg, Renato & Lima, Duane F., 2019, Taxonomic rearrangements and typifications in Myrcia sect. Tomentosae (Myrteae, Myrtaceae), Phytotaxa 404 (3), pp. 111-120 : 112-118

1. Myrcia selloi (Spreng.) N.Silveira (in Mattos et al. 1986: 5). Figures 1A–G ; 2A–C ; 3A

≡ Myrtus selloi Sprengel (1825: 482) . Aulomyrcia selloi (Spreng.) Kausel (1966: 350) . Type:— BRAZIL. “ Brasil ”, Sellow s.n. (holotype unknown). BRAZIL. “Brasilia”, Sellow s.n. (neotype K 000344138! designated here). Notes:—According to Stafleu & Cowan (1985), Sprengel’s herbarium was sold in parts after his death to many different herbaria. No material that could be interpreted either as the holotype or other type-collection of Myrtus selloi has been found. The neotype selected, Sellow s.n. (K000344138) matches well the morphology described in the protologue of Myrtus selloi . This material was previously identified as Aulomyrcia ramulosa var. triflora (a synonym of Myrcia selloi ) by Berg, but it is not a type of that variety, as recorded in the specimen (see comments under Myrcia triflora ).

= Myrcia ramulosa De Candolle (1828: 250) . Aulomyrcia ramulosa (DC.) O. Berg (1855 –1856: 36). Type:— BRAZIL. São Paulo: “Prov. S. Pauli” (on the label), Martius s.n. (holotype M 0136885 [image!]).

= Myrcia ramulosa var. multiflora De Candolle (1828: 250) . Type:— BRAZIL. São Paulo: “Prov. S. Pauli” (on the label), Martius s.n. (holotype M 0136888 [image!]).

= Myrcia laruotteana Cambessèdes (1832 –1833: 311). Aulomyrcia laruotteana (Cambess.) O. Berg (1855 –1856: 53). Aulomyrcia laruotteana var. genuina O. Berg (1857 –1859: 90). Type:— BRAZIL. Minas Gerais: “In pascuis prope Bora (prov. Minas Geraes)”, Saint-Hilaire 648 (lectotype P 00161425! designated here, isolectotype P 00161426!, P 00161427!), syn. nov. Notes: In the protologue of Myrcia laruotteana, Cambessèdes cited a Saint-Hilaire’s collection with a note made by Laruotte. Two materials bearing the information “Bora” in Laruotte’s writing were found at P. One of them (P00161425) bears Cambessèdes’ identification and was selected as lectotype.

= Myrcia laruotteana var. glabriuscula Cambessèdes (1832 –1833: 311). Aulomyrcia laruotteana var. glabriuscula (Cambess.) O. Berg (1857 –1859: 90). Type:— BRAZIL. Goiás: “Ad rivulum prope tugurium vulgò Sitio do Riacho in parte australi provinciae Goyaz proxima prov. Minas Geraes.”, Saint-Hilaire C1-917 (lectotype MPU 010940 [image!] designated here, isolectotypes F 0065511 [image!], P 00161421!, P 00161422!, P 00161423!, P 00161424!), syn. nov.

= Myrcia laruotteana var. impunctata Cambessèdes (1832 –1833: 311). Aulomyrcia laruotteana var. impunctata (Cambess.) O. Berg (1857 –1859: 90). Type:— BRAZIL. São Paulo: “Ad viam prope praedium vulgò Fazenda d’Araracuara in parte septentrionali prov. S.Pauli proxima prov. Minas Geraes, necnon ad rivulum prope villan Ubà”, Saint-Hilaire C1-1009 (lectotype MPU 010941 [image!] designated here, isolectotypes F 0065512 [image!], P 00161418!, P 00161419!, P 00161420!), syn. nov.

= Myrcia triflora Cambessèdes (1832 –1833: 327). Aulomyrcia ramulosa var. triflora (Cambess.) O. Berg (1857 –1859: 62). Type:— BRAZIL. Rio de Janeiro: “In sepibus prope Rio de Janeiro ”, Saint-Hilaire C2-115 (lectotype MPU 010969 [image!] designated here, isolectotypes P 00161361!, P 00161362!, P 00161363!), syn. nov. Notes: Myrcia triflora was unexpectedly cited as synonym of Myrcia graciliflora Sagot (1885: 185) by Govaerts et al. (2018), but it was likely an error, as these two species are morphologically quite different. On the other hand, there are no differences between Myrcia triflora and M. selloi ; the synonymization is therefore proposed here. When describing Aulomyrcia ramulosa var. triflora, Berg cited other gatherings in addition to the type of the basionym (Saint-Hilaire C2-115). Some of these other collections are mistakenly marked as types in herbaria (e.g. W0037076, K000344138).

= Aulomyrcia acutata O. Berg (1857 –1859: 71). Type:— BRAZIL. Minas Gerais: “Ad Freguezia Bertioga, in prov. Minas Geraes”, Sellow s.n. (holotype B†, lectotype LE 00007015 [image!] designated here, isolectotypes K 000342538!, P 00161323!), syn. nov. Notes: The holotype of Aulomyrcia acutata was destroyed at B, and three further duplicates with exactly the same morphology were found at K, LE and P. The most complete material, with Berg’s identification on the label, is chosen as lectotype.

= Aulomyrcia acutifolia O. Berg (1857 –1859: 89). Aulomyrcia acutifolia var. acutifolia (Described as A. acutifolia var. villosa O. Berg, 1857 –1859: 89). Type: — BRAZIL. Minas Gerais: “Ad urbem Barbacena, prov. Minas Geraes”, Sellow s.n. (holotype B†, lectotype P 00161324! designated here), syn. nov. Notes: The holotype of Aulomyrcia acutifolia was housed and subsequently destroyed at B (“hb. Berol.” in the protologue). There is no precise information about the collection event in the material found at P, but it bears an identification in Berg’s handwriting and matches the protologue perfectly. This material is selected as lectotype.

= Aulomyrcia acutifolia var. pubescens O. Berg (1857 –1859: 90). Type: — BRAZIL. Minas Gerais: “Ad praedium Jozé Gonzales in ejusdem provinciae parte dicta Minas Novas”, 1837, Pohl 1070 (lectotype W 0028187! designated here, isolectotypes BR 0000005280704!, F 0064676 [image!], K 000343483!, K 000343484!, M 0136805! [image!], W 0028186!), syn. nov. Notes: Berg cited Pohl 1070 deposited in “hb. Vindob. Mart. et Zuccar.” as syntypes of Aulomyrcia acutifolia var. pubescens . Several sheets were found in different herbaria. A duplicate at W (W0028187) is the most complete one, bearing the collection number and locality, as well as Berg’s identification, and is here chosen as lectotype.

= Aulomyrcia dimorpha O. Berg (1857 –1859: 101). Type:— BRAZIL. Minas Gerais: “Ad urbem Barbacena prov. Minarum”, Sellow s.n. (holotype B†, lectotype BR 0000005230501! designated here, isolectotypes F 0064710 [image!], K 000342837!, LE 00007058 [image!], P 00161522!, P 00161523!, W 0032622!), syn. nov. Notes: Sellow s.n. at B was cited as the holotype of Aulomyrcia dimorpha . However, this specimen was destroyed and consequently the duplicate at BR bearing the author’s identification on the label is chosen as lectotype. This specimen also bears the number 1040 on its label. The numbers presented in some Sellow’s collections are not his collection number, but a numbering used in B, as reported by Santos et al. (2016).

= Aulomyrcia laruotteana var. membranacea O. Berg (1857 –1859: 90). Type:— BRAZIL. Rio de Janeiro: “In arenosis ad Rio Belmonte”, Princ. Neuwied s.n. (lectotype MEL 1540441 [image!] designated here, isolectotypes BR 0000005280384!, BR 0000005281039!), syn. nov. Notes: Berg cited two herbaria in the protologue of Aulomyrcia laruotteana var. membranacea (“hb. Sonder. et Mart.”). These herbaria are nowadays housed respectively at MEL and BR ( Stafleu & Cowan 1981, 1985). The most complete duplicate bearing Berg’s identification is selected as lectotype.

= Aulomyrcia laruotteana var. opaca O. Berg (1857 –1859: 90). Type:— BRAZIL. Minas Gerais: “In fruticetis ripariis ad Vargem do Carmo et Paula Grassa”, Sellow s.n. (holotype B†, lectotype W 0033304! designated here, isolectotypes K 000343478!, LE 00007089 [image!], P 00161221!, P 00161222!), syn. nov. Notes: The holotype of Aulomyrcia laruotteana var. opaca was destroyed at B, and several duplicates were found in other herbaria. Among these, a complete material bearing Berg’s handwriting at W is designated as lectotype. This specimen also bears the number 195, which is probably a numbering used at B.

= Aulomyrcia laruotteana var. punctata O. Berg (1857 –1859: 90). Type:— BRAZIL. Minas Gerais: “ In prov. Minas Geraes ad Caldas”, 1861–62, Regnell II 121 (lectotype MEL 1540444 [image!] designated here, isolectotypes, K 000343481 !, LE 00007091 [image!]), syn. nov. Notes: Berg cited the syntypes Widgren 552, Regnell 137, Regnell 121, Miquel s.n. and Sellow 4952, deposited in the “hb. Berol. et Sonder.”, when describing Aulomyrcia laruotteana var. punctata . Among these materials, only Miquel s.n. was not found. Regnell 121 at MEL bears complete information about the collection event and the identification in Berg’s writing; this material is therefore designated as lectotype.

= Aulomyrcia ramulosa var. acutata O. Berg (1857 –1859: 62). Myrcia ramulosa var. acutata (O.Berg) Mattos (1974: 3) . Myrcia selloi var. acutata (O.Berg) N.Silveira (in Mattos et al. 1986: 6). Type:— BRAZIL. Rio de Janeiro: “In prov. Rio de Janeiro ”, Pohl s.n. (lectotype BR 0000005239900! designated here, isolectotypes M 0136886 [image!], MEL 1007452 [image!]). Notes: Berg cited Pohl s.n. in “hb. Mart. Sonder. et Zuccar.” as syntypes in the protologue. All the duplicates found present Berg’s handwriting on the labels, and the most complete one is selected as lectotype.

= Aulomyrcia ramulosa var. colorata O. Berg (1857 –1859: 62). Type:— BRAZIL. Rio de Janeiro: “Prov. Rio de Janeiro ”, Gaudichaud s.n. (holotype B†). BRAZIL. Rio de Janeiro: Sebastianópolis, Schüch s.n. (neotype M 0136893 [image!] designated here). Notes: The holotype cited for Aulomyrcia ramulosa var. colorata, Gaudichaud s.n., was destroyed at B and no duplicates have been found elsewhere. The neotype selected here, Schüch s.n., bears Berg’s identification on the label, despite not being cited as a type. This material exactly matches the protologue and was collected in the same region of the holotype in the state of Rio de Janeiro.

= Aulomyrcia ramulosa var. panicularis O. Berg (1857 –1859: 63). Type:— BRAZIL. São Paulo: “In prov. S. Pauli”, Martius s.n. (lectotype MEL 1540700 [image!] designated here, isolectotypes M 0136888 [image!], MEL 1540701 [image!]). Notes: Berg cited two collections, Schott 5882 and Martius s.n., as syntypes of Aulomyrcia ramulosa var. panicularis . The first one has not been located. Three duplicates of Martius s.n. were found and the most complete one (MEL1540700), with Berg’s identification and collection locality on the label, is designated as lectotype. The sheet housed at M has two branches and two labels with Berg’s identification as Aulomyrcia ramulosa var. panicularis and A. ramulosa var. pauciflora . The last identification is likely an error, since the same label presents the note “Brasilia prov. S. Pauli”, the place where A. ramulosa var. panicularis was collected ( A. ramulosa var. pauciflora was collected in “prov. Rio de Janeiro ” according to the protologue).

= Aulomyrcia ramulosa var. pauciflora O. Berg (1857 –1859: 62). Myrcia ramulosa var. pauciflora (O.Berg) Kiaerskou (1893: 80) . Type:— BRAZIL. Rio de Janeiro: “prov. Rio de Janeiro ”, Martius s.n. (lectotype MEL 1007451 [image!] designated here). Notes: Berg cited syntypes for Aulomyrcia ramulosa var. pauciflora : Martius s.n. and Pohl s.n. in “hb. Mart. Sonder. et Zuccar.”. Martius s.n. at MEL (MEL 1007451) is chosen as lectotype because it presents complete information on the collector and locality, besides the identification in Berg’s handwriting. Another material at MEL (MEL 1540699) is annotated as a type of A. ramulosa var. pauciflora , but there is no information about the collector, collection locality, or Berg’s identification. This material is therefore not considered a duplicate of the type collection.

= Aulomyrcia ramulosa var. subcordata O. Berg (1857 –1859: 62). Type:— BRAZIL. Rio de Janeiro: “in nemorosis montis Corcovado prov. Rio de Janeiro ”, Beyrich s.n. (lectotype K 000344139 ! designated here, isolectotypes P 00161133 !, P 00161137 !). Notes : Schott 5876 and Beyrich s.n. were cited as syntypes of Aulomyrcia ramulosa var. subcordata . No material of the first collector has been found. Duplicates of Beyrich s.n. were found at K and P; the sheet selected as lectotype bears Berg’s identification. Three other specimens at P (00161134, 00161135 and 00161136) were identified as A. ramulosa var. subcordata by Berg, but the collector is missing in all of them. Hence, these materials are not considered duplicates of the type collection .

= Aulomyrcia undulata O. Berg (1857 –1859: 89). Myrcia lajeana D. Legrand (1961: 291) . Type:— BRAZIL. “Ad Lages, ad fines prov. Rio Grande do Sul et S. Catharinae”, Sellow s.n. (holotype B†). Type:— BRAZIL. Rio Grande do Sul, Bom Jesus, entre os distritos de Silveira e São José dos Ausentes, 5 February 1985, Silveira, Frosi & Schinoff 2014 (neotype RB 00312706! designated here), syn. nov. Notes: The holotype of Aulomyrcia undulata was destroyed at B and no duplicates have been found. Although the selected neotype has flowers instead of fruits, it is a good match for the original description of A. undulata , presenting the main characteristics of branches, leaves and inflorescences.

= Aulomyrcia ramulosa var. australis O.Berg (1859: 544) . Myrcia selloi var. australis (O.Berg) N.Silveira (in Mattos et al. 1986: 7). Type:—“In banda oriental, ad fluv. Uruguay ”, Tweedie s.n. (holotype LE).

= Aulomyrcia laruotteana var. paraguayensis O. Berg (1861: 661) Myrcia laruotteana var. paraguayensis (O.Berg) D.Legrand (in Legrand & Klein 1969: 321). Type:— PARAGUAY. “In Paraguay ”, Rengger s.n. (holotype unkown), syn. nov.

= Myrcia assumptionis Morong (in Morong & Britton 1893: 106). Aulomyrcia assumptionis (Morong) Kausel (1966: 350) . Type:— PARAGUAY.“In copses. Asuncion ”, 9 December 1888, Morong 260 (lectotype NY 00405387 [image!] designated here, isolectotypes E 00285741 [image!], F 0065438 [image!], G 00073642!, GH 00071074 [image!], MO 313560 [image!], NY 00405385 [image!], NY 00405386 [image!], PH 00018859 [image!], US 00117735 [image], US 00956146 [image!]), syn. nov. Notes: According to Stafleu & Cowan (1981), Morong’s types are housed at NY. Three duplicates were found in that herbarium, and the most complete one is selected as lectotype.

= Myrcia laruotteana var. macrophylla Kiaerskou (1893: 75) . Type:— BRAZIL. “Brasil”, Regnell III 551 (holotype C, isotypes S 13- 18975 [image!], S 17-10776 [image!], S 17-36835 [image!]), syn. nov.

= Myrcia ramulosa var. leptophylla Kiaerskou (1893: 80) . Type:— BRAZIL. Minas Gerais: “Ad Lagoa Santa in silvis”, September– October 1864, Warming s.n. (holotype C 10015886!).

= Myrcia hassleriana Barbosa Rodrigues (1903: 2) . Type:— PARAGUAY. “in campis regione fluminis Carimbatay, ad Paraguay ”, September 1898 –1899, Hassler 4565 (holotype G 00073700!).

= Myrcia corrientinensis Barbosa Rodrigues (1907: 802) , nom. nud.

= Myrcia perorebimi Barbosa Rodrigues (1907: 802) , nom. nud.

= Myrcia microsiphonata D. Legrand (1961: 295) . Myrcia ramulosa var. microsiphonata (D.Legrand) D.Legrand (in Legrand & Klein 1969: 312). Myrcia selloi var. microsiphonata (D.Legrand) N.Silveira (in Mattos et al. 1986: 7). Type:— BRAZIL. Santa Catarina: Curral Falso, Bom Jardim, S. Joaquim, 1500 m, 10 December 1958, Reitz & Klein 7776 (holotype MVM, isotype HBR 0024828!).

= Myrcia smithii D. Legrand (1961: 290) . Type:— BRAZIL. Santa Catarina: Pilões, Palhoça, 50–500 m, 29 November 1956, Smith & Klein 8009 (holotype MVM, isotypes HAS 55107 [image!], HBR 0019659!, NY 00616369 [image!], R 000114575!, US 02859740 [image!]).

= Myrcia ramulosa var. megapotamica D. Legrand (1968: 22) . Myrcia selloi var. megapotamica (D.Legrand) N. Silveira (1988: 3) . Type:— URUGUAY. Artigas: Santa Rosa, November 1927, Herter 82659 (lectotype MVM [image!], designated here). Notes: Legrand cited many materials in the protologue of Myrcia ramulosa var. megapotamica without indicating a specific type.

= Myrcia laruotteana var. australis D.Legrand (in Legrand & Klein 1969: 317). Type:— BRAZIL. Paraná: Tijucas do Sul, Tabatinga, 5 November 1956, Hatschbach 3402 (holotype MVM, isotype MBM!), syn. nov.

Specimens selected: — ARGENTINA. Misiones: Guaraní, H.A. Keller 3340 (HUEFS!). Corrientes: Mercedes, L.R. Landrum 4322 (MBM!, RB!). BOLIVIA. Santa Cruz: Florida, R. Mello-Silva 2045 (UPCB!). BRAZIL. Bahia: Tucano, E. Melo 4260 (HUEFS!). Espírito Santo: Santa Teresa, H.Q. Boudet Fernandes 1213 (MBML!, RB!). Goiás: Alto Paraíso de Goiás, G. Hatschbach 54767 (MBM!, MO). Maranhão: Mirador, G.M. Conceição 335 (RB!, UB!). Mato Grosso : Nova Xavantina, B.S. Marimon 373 (UB!). Mato Grosso do Sul: Bonito, G. Hatschbach 74156 (BHCB!, MBM!). Minas Gerais: São Sebastião do Paraíso, Irmão Theodoro 739 (RB!). Paraná: Londrina, D.F. Lima 295 (RB!, UEC!, UPCB!). Rio Grande do Sul: São José dos Ausentes, M. Sobral 9429 (MBM!). Santa Catarina: São Francisco do Sul, D.F. Lima 337 (RB!, UEC!, UPCB!). São Paulo: Campinas, D.F. Lima 334 (RB!, UPCB!). Sergipe: Lagarto, D.S. Melo 24 (ASE). Tocantins: Almas, R.C. Mendonça 5716 (RB!, UB!). PARAGUAY. Central: Tavarory, E.M. Zardini 23435 (RB!). URUGUAY. Artigas: Artigas, S.J. Longhi s.n. (HDCF 4594).

General notes: Myrcia lajeana and M. laruotteana along with all their previous synonyms are here included in the circumscription of M. selloi . Although Myrcia laruotteana is the most widely used name, M. selloi is the oldest one and therefore has priority ( Turland et al. 2018). Each of these species were based on single collections that we now interprete them as morphological extremes of a single taxon, since several individuals with intermediate morphology have been found.

Overall, these three species have been poorly distinguished by indumentum, leaf, inflorescence and bracteoles size and persistence or not of the hypanthium and calyx lobes in the fruits ( Berg 1857 –1859, Legrand 1968, Legrand & Klein 1969, Soares-Silva 2000, Sobral 2003). These differences seem to be continuous and fail to diagnose the taxa in a clear way. Taxonomic studies treating these species have evidenced morphological similarities among Myrcia lajeana , M. laruotteana and M. selloi and consequently how difficult it is to distinguish each other, especially in areas where these species were sympatric. As an example, Legrand & Klein (1969) presented detailed descriptions for each species, including some varieties, but still did not truly characterized them. The same authors also mentioned the possible existence of hybrid individuals.

Addressing this delimitation issue, Lima et al. (2015) carried out molecular analyses that showed no clear genetic discontinuities among the sampled populations of Myrcia lajeana , M. laruotteana and M. selloi . Based on these results, and also including morphological remarks, these authors informally suggested the recognition of Myrcia laruotteana (including M. lajeana ) and M. selloi . This last species was taken as a divergent taxon due to its caducous hypanthium and calyx lobes in the fruits ( Lima et al. 2015). Nevertheless, there are many specimens presenting flowers and fruits either with or without persistent hypanthium and calyx ( Fig. 1F–G ), as already pointed out by Legrand (1968) when describing Myrcia ramulosa var. megapotamica (“ Al mismo tiempo la flor sufre a veces la circuncisión de su hipantio como en M. ramulosa , mientras que en M. laruotteana el tubo casi inexistente no sufre nunca ablación.”, p. 23). He considered this variety as a possible hybrid between Myrcia ramulosa and M. laruotteana var. paraguayensis (both included here in the synonymy of M. selloi ).

In this broader circumscription, Myrcia selloi is widely distributed from the Brazilian states of Maranhão, Piauí and Bahia to southern Brazil and Bolivia, Paraguay, Uruguay and Argentina ( Figure 3A ). This species has young branches, petioles and leaves glabrous to pubescent. Petioles are nearly absent to about 10 mm long. Leaves vary greatly from elliptic or lanceolate to ovate with acute to acuminate apex and acute to rounded, rarely subcordate or attenuate base; the marginal vein is formed by arches of the secondary veins. Inflorescences are very delicate panicles, glabrous or slightly pubescent, sometimes reduced to 3–5 flowers. Bracteoles are linear or lanceolate, up to 2 mm long. Flowers are glabrous with ciliate calyx lobes, but specimens from Rio Grande do Sul may present whitish trichomes on the ovary (see Myrcia lajeana in Sobral 2003). Calyx lobes are triangular and strongly reflexed at anthesis, persistent or not in the globose fruits. Some individuals from northern areas, mainly in Cerrado, may resemble Myrcia tomentosa . See the comments under this species.

Excluded names:

Aulomyrcia laruotteana var. peruviana O. Berg (1857 –1859: 91): — It is a synonym of Myrcia multiflora De Candolle (1828: 244) , according to McVaugh (1958).

Myrcia ochracea O. Berg (1857 –1859: 190): — It was listed as a synonym of M. laruotteana by Govaerts et al. (2018), likely due to the existence of two different materials with the same collector and collection number (Claussen 522). The first one is the type of M. ochracea , deposited at BR (00000855210), and identified in Berg’s writing. Examination of the protologue and the specimen showed that this material is not related to any species in Myrcia sect. Tomentosae and has otherwise a morphology that suggests its placement in Myrcia sect. Myrcia . The second Claussen 522 is deposited at BM (001191668) and is indeed a specimen of M. selloi (typical morphotype of M. laruotteana ).

2. Myrcia tomentosa (Aubl.) De Candolle (1828: 245) . Figures 1H–K ; 2D ; 3B ≡ Eugenia tomentosa Aublet (1775: 504) . Myrtus aubletii Sprengel (1825: 486) . Aguava tomentosa (Aubl.) Rafinesque (1838: 107) .

Cumetea tomentosa (Aubl.) Rafinesque (1838: 106) . Aulomyrcia tomentosa (Aubl.) Amshoff (1942: 153) . Type:— FRENCH

GUIANA. “Habitat ad ripam fluvii Sinemariensis tribus milliaribus à maris littore”, 1775, Aublet s.n. (holotype BM 000953642!). For the complete synonym list see Flora do Brasil 2020 and Govaerts et al. (2018).

Specimens selected:— BOLIVIA. Santa Cruz: Velasco, J.R.I. Wood 26494 (K!). BRAZIL. Bahia: Campo Formoso, F.B. Ramalho 38 (HST, IPA, RB!). Ceará: Meruoca, F.S. Cavalcanti 436 (RB!). Espírito Santo: Ibiraçu, A.P. Fontana 2805 (RB!). Goiás: Mineiros, G. Hatschbach 35005 (MBM!, MO). Mato Grosso : Rio Brilhante, G. Hatschbach 25092 (K!, RB!, UPCB!). Mato Grosso do Sul: Campo Grande, E. Seramim 158 (RB!). Minas Gerais: Prados, D.F. Lima 300 (RB!, UEC!, UPCB!). Pará: Canaã dos Carajás, N.F. O. Mota 1181 (RB!). Paraná: Rio Branco do Sul, D.F. Lima 338 (RB!, UEC!, UPCB!). Pernambuco: Igarassu, B.S. Amorim 419 (RB!). Roraima: Serra Sabang, B. Maguire 40268 ( US!). São Paulo: Corumbataí, K.D. Barreto 1556 (ESA!, HUEM!, SP!). Tocantins: Almas, R.C. Mendonça 6277 (RB!). COLOMBIA. Cundinamarca: Fusagasugá, J. Triana 4130 (K!). FRENCH GUIANA. Cayenne, C. Delnatte 535 (K!). GUYANA. Potaro-Siparuni: Paramakatoi, A.H.G. Alston 502 (K!). PANAMA. C.O.Erianson 284 (K!). SURINAME. Brokopondo, R. Tjon Lim Sang 16257 (K!). TRINIDAD AND TOBAGO. Trinidad: Port-of-Spain, R.O. Williams 11174 (K!). VENEZUELA. Falcon: Bolivar, O. Huber 10829 (K!).

General notes:— Myrcia tomentosa is one of the most widely distributed species of Myrcia , from Panama, Colombia, Venezuela, Trinidad and Tobago and Guianas to southern Brazil in the state of Paraná ( Figure 3B ). Plants of Myrcia tomentosa are subshrubs to trees generally with dense yellowish or whitish indumentum in the young parts and inflorescences. Leaves are obovoid, sometimes elliptic to ovate, with acute to rounded apex and acute to obtuse base. Secondary venation is lax, raised abaxially and not always clearly visible adaxially. Inflorescences are usually completely covered with trichomes, as well as the buds. Specimens from central Brazil are the most variable ones and may be quite similar to a morphotype of Myrcia selloi (as considered here). They are distinguished through the young branches and inflorescences densely covered with trichomes in Myrcia tomentosa (vs. glabrous to slightly pubescent in M. selloi ) and leaves usually obovoid (vs. elliptic to ovate). The molecular results of Lima et al. (2015) showed Myrcia tomentosa genetically separated from Myrcia selloi . Nonetheless, they also found few potentially hybrid individuals mainly between the states of Goiás and São Paulo, where the morphological overlap is most often seen.

Excluded species:

Calyptromyrcia puberula O. Berg (1857 –1859: 57) and C. venosa O. Berg (1857 –1859: 57):—Both species were listed as synonyms of Myrcia tomentosa by Govaerts et al. (2018). Each of these species were based on a single collection of Sellow s.n., deposited and destroyed at B, and no duplicates have been found. Berg also cited an illustration of a leaf of C. puberula (“Tab. II, fig. 23”) in Flora Brasiliensis . According to this illustration and the protologue, the morphology of C. puberula does not match either M. tomentosa or other species of Myrcia sect. Tomentosae . Similarly, C. venosa also does not match the morphology of M. tomentosa or related species.

Figures

FIGURE 1. Myrcia selloi (A–G). (A) Leaf abaxial surface (Lima 334), (B) Leaf adaxial surface (M. laruotteana morphotype; Lima 299), (C) Inflorescence (Meyer 2557), (D) Floral bud (Borgo 117), (E) Flower (Borgo 117), (F) Fruits (Chaddad Jr. 112), (G) Fruits and its caducous calyx (Chaddad Jr. 112). Myrcia tomentosa (H–K). (H) Leaf adaxial surface (Lima 338), (I) Inflorescence (Lima 300), (J) Floral bud (Hatschbach 19191), (K) Fruit (Lima 338). Photos: (C) F.S.Meyer; the others from the authors.

FIGURE 2. (A) Neotype of Myrcia selloi, (B) Neotype of Myrcia lajeana, (C) Lectotype of Myrcia laruotteana, (D) Holotype of Myrcia tomentosa.

FIGURE 3. Distribution maps of (A) Myrcia selloi and (B) Myrcia tomentosa.