Plinia sessiliflora (O. Berg 1857: 34 ) Stadnik & Sobral, 2020
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publication ID |
https://doi.org/ 10.11646/phytotaxa.447.3.5 |
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persistent identifier |
https://treatment.plazi.org/id/DB282C07-FFC8-8744-C3A9-412CFACF42DD |
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treatment provided by |
Felipe |
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scientific name |
Plinia sessiliflora (O. Berg 1857: 34 ) Stadnik & Sobral |
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7. Plinia sessiliflora (O. Berg 1857: 34) Stadnik & Sobral View in CoL , comb. nov. Basionym: Marlierea sessiliflora O.Berg.
Type:— BRAZIL. Rio de Janeiro: without locality, s.d. (fl), Schott 5841 (lectotype, designated here: W! [0047992]; isolectotypes: F [image!], W! [0047991]) .
The raised midvein and significantly prolonged hypanthium place Marlierea sessiliflora in Plinia . The species exhibits the distinctive morphology of axillary and solitary flowers at the terminal nodes. The globose floral bud with external white pubescence is also typical.
Berg (1857 –1859) cited the W herbarium in the protologue of M. sessiliflora (as “in hb. Vindob”). Two specimens bearing Berg’s handwriting are housed at W and the most representative was chosen as the lectotype.
8. Siphoneugena martinellii ( Barroso & Peixoto 1992: 86) Stadnik , comb. nov. Basionym: Marlierea martinellii G.M.Barroso & Peixoto.
Type:— BRAZIL. Rio de Janeiro: Mun. Nova Friburgo, Macaé de Cima , nascente do Rio das Flores, 1100 m, 24 June 1986 (fl), G. Martinelli 11787 (holotype: RB!; isotypes: MBM [image!], MO [not seen], NY [image!], RBR [not seen]) .
Marlierea martinellii displays typical features of subtribe Pliniinae Lucas & Vasconcelos (in Lucas et al. 2019: 566), such as the raised midvein on the adaxial surface, bracteoles persistent and enveloping part of the floral bud, and a long hypanthium prolonged above the ovary apex. According to an ongoing new generic circumscription of Pliniinae , this species belongs to Siphoneugena (Stadnik et al. in prep.).
Barroso & Peixoto (1992) compared the species with three other species of Marlierea : Marlierea brachymischa Kiaerskou (1893: 47) (= Myrciaria floribunda (H.West ex Willdenow 1799: 960) O.Berg (1856: 330)); Marlierea macedoi D. Legrand (1962: 27) (= Myrciaria dubia ( Kunth 1823: 152) McVaugh (1963: 501)) ; and Marlierea langsdorffii O.Berg (1859: 536) (= Plinia langsdorffii (O.Berg) Sobral & Souza in Sobral et al. (2017: 88)). Siphoneugena martinellii differs from these species mainly by the botryoid inflorescence (vs. glomerate inflorescences in other species). According to the new classification of Siphoneugena (Stadnik et al. in prep.), this species is most closely related to Siphoneugena kuhlmannii Mattos (1967: 334) , because they share the glabrous floral bud and straight hypanthium (vs. not constricted) above the ovary apex. Siphoneugena martinellii differs from S. kuhlmannii by the leaf shape and size (elliptic and 7–8 cm long vs. obovate or ovate and 3–6 cm long) and by the inflorescence length and number of flowers (5–6 mm long bearing 6–8 flowers vs. 1–2 mm long bearing 2–4 flowers per inflorescence).
| W |
Naturhistorisches Museum Wien |
| F |
Field Museum of Natural History, Botany Department |
| G |
Conservatoire et Jardin botaniques de la Ville de Genève |
| RB |
Jardim Botânico do Rio de Janeiro |
| MBM |
San Jose State University, Museum of Birds and Mammals |
| MO |
Missouri Botanical Garden |
| NY |
William and Lynda Steere Herbarium of the New York Botanical Garden |
| RBR |
Universidade Federal Rural do Rio de Janeiro |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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