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Nomenclatural Innovations in Neotropical Salicaeeae Mac H

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Nomenclatural Innovations in Neotropical Salicaeeae Mac H The University of Southern Mississippi The Aquila Digital Community Faculty Publications 1-1-2006 Nomenclatural Innovations in Neotropical Salicaeeae Mac H. Alford University of Southern Mississippi, [email protected] Follow this and additional works at: https://aquila.usm.edu/fac_pubs Part of the Biology Commons Recommended Citation Alford, M. H. (2006). Nomenclatural Innovations in Neotropical Salicaeeae. Novon, 16(3), 293-298. Available at: https://aquila.usm.edu/fac_pubs/8569 This Article is brought to you for free and open access by The Aquila Digital Community. It has been accepted for inclusion in Faculty Publications by an authorized administrator of The Aquila Digital Community. For more information, please contact [email protected]. Volume 16 NO VON Number 3 Nomenclatural Innovations in Neotropical Salicaceae Mac H. Alford L. H. Bailey Hortorium, Cornell University, 228 Plant Science, Ithaca, New York 14853, U.S.A. Current address: Department of Biological Sciences, University of Southern Mississippi, 118 College Drive #5018, Hattiesburg, Mississippi 39406, U.S.A. [email protected] ABSTRACT. Macrothumia M. H. Alford is described e transferido para Abatia Ruiz & Pav6n, com base em as a new genus of Salicaceae based on Neosprucea analises de seqiiencias de DNA do plastideo e devido kuhlmannii Sleumer from Brazil. The deciduous h ausencia de descontinuidades morfologicas entre os perianth, papillate leaf teeth, presence of receptac generos. Em razao do nome Abatia spicata (Turezani ular disk glands, and analyses of plastid DNA data now) Sleumer ji existir, Abatia angeliana M. H. suggest that the new genus is more closely related Alford e publicado para substituir Aphaerema spicata to Ahernia Merrill and Pleuranthodendron L. 0. Miers. Um lect6tipo para Aphaerema spicata tambem en Williams than to Banara Aublet or Neosprucea Sleu designado. 0 genero monotipico Priamosia Urban, da mer. The monotypic genus Aphaerema Miers of Brazil ilha de Hispaniola, originalmente descrito fora de and Argentina is transferred to Abatia Ruiz & Pavon, Xylosma G. Forster com base em seus poucos estames based on analyses of plastid DNA sequences and on (quatro, em vez de oito a numerosos), e transferido the lack of morphological discontinuities between the para Xylosma, e um ne6tipo e' designado para Xylosma genera. Because the name Abatia spicata (Turczani domingensis (Urban) M. H. Alford. now) Sleumer already exists, Abatia angeliana M. H. Key words: Abatia, Aphaerema, Argentina, Ba Alford is published as a replacement name for nara, Brazil, Flacourtiaceae, Hispaniola, Macrothu Aphaerema spicata Miers. A lectotype for Aphaerema mia, Neosprucea, Priamosia, Salicaceae, Xylosma. spicata is also designated. The monotypic Hispanio lan genus Priamosia Urban, originally described as Based on recent phylogenetic analyses of Salica separate from Xylosma G. Forster based on its few ceae using both morphological and molecular data stamens (four, instead of eight to numerous), is (Alford, 2005; Chase et al., 2002), several taxonomic transferred to Xylosma, and a neotype is designated changes were deemed urgent and sufficiently well for Xylosma domingensis (Urban) M. H. Alford. supported to precede a forthcoming treatment of the RESUMO. Macrothumia M. H. Alford e descrito como family in the Kubitzki-edited series The Families and um novo genero de Salicaceae, com base em Genera of Flowering Plants (S. Zmarzty, in prep.). Neosprucea kuhlmannii Sleumer do Brasil. 0 perianto Salicaceae now include a large part of the former deciduo, as papilas nos dentes das folhas, a presenca Flacourtiaceae (Alford, 2005; Chase et al., 2002), and de discos glandulares receptaculares e a analise de the taxa considered here were all formerly placed in dados de DNA do plastideo sugerem que o novo Flacourtiaceae. Phylogenetic analyses indicate that genero e mais proximamente relacionado a Ahernia the monotypic Aphaerema Miers is nested within Merrill e Pleuranthodendron L. 0. Williams do que Abatia Ruiz & Pav6n, that the monotypic Priamosia a Banara Aublet ou Neosprucea Sleumer. 0 genero Urban is nested within Xylosma G. Forster, and that monotipico Aphaerema Miers do Brasil e da Argentina the species usually treated as Banara kuhlmannii NOVON 16: 293-298. PUBLISHED ON 7 NOVEMBER 2006. This content downloaded from 131.95.218.41 on Mon, 19 Sep 2016 17:58:10 UTC All use subject to http://about.jstor.org/terms 294 Novon (Sleumer) Sleumer characteristics is indicative of Ahernia[= and PleurNeosprucea kuhlmannii Sleu mer] belongs anthodendron. in Because a this speciesseparate differs in several genus allied more closely to Pleuranthodendron key characters from those other genera (see de L. 0. Williams and Ahernia Merrill. scription and key below), a new genus is erected here. Another possibility is to lump all three entities into MACROTHUMIA, NEOSPRUCEA, AND BANARA Ahernia, the name with priority, but because their interrelationships are still unresolved (Alford, 2005) In 1950 Sleumer described a new species from and because Pleuranthodendron is a relatively com Brazil as part of his recently established genus mon genus of the Neotropics, the more conservative Neosprucea Sleumer. Sleumer (1936, 1938) had and less disruptive approach is the creation of a new segregated Neosprucea from Banara Aublet based on genus. the former having spiciform racemes with 4- or 5 merous flowers and linear-elongate anthers. In contrast, the remaining species of Banara usually Macrothuinia M. H. Alford, gen. nov. TYPE: have paniculate inflorescences (rarely racemose, Macrothumia kuhlmannii (Sleumer) M. H. Al fascicular, or with flowers solitary) with 3-merous ford. Figure 1. flowers and globose to ellipsoidal anthers. Both genera Genus novum, Aherniae Merrill affine, a qua fructibus have highly intruded parietal placentation and in majoribus et numero petalorum differt, et Pleuranthodendro clude several species with leaves that are 3-veined L. 0. Williams affine, a quo inflorescentia haud ramosa et from the base. Sleumer's (1950) new species, N. numero seminum et tepalorum differt. Arbor, folia simplicia, alterna, ovata vel oblongo-elliptica, ad apicem petioli kuhlmannii, had strongly 3-veined leaves and highly glandulis duabus rotundis crassis operculatis instructa, intruded parietal placentation, but he saw no material margine inconspicue serrato, venatione foliorum actino with flowers. Regardless, he was convinced that the droma. Inflorescentia terminalis racemosa fasciculatiformis new species belonged in Neosprucea due to its large vel umbelliformis, sepala et petala 3 vel 4, post anthesin fruit (> 3 cm diam.). Such a large fruit had never decidua, stamina numerosa, antherae ellipsoideae, glandulae disci praesentes, ovarium superum. Capsula globosa, 3-5 cm been observed in Banara, and the few available fruits diametro, multiseminata, pseudo-8-9-locularis, placentibus of Neosprucea were larger than those of most Banara. 8-9-lamelliformibus, in cavitatem profunde prominentibus, Following the collection of additional specimens, pericarpio fragili subcoriaceo. Kuhlmann (1953) reinforced Sleumer's claims, point Trees to 20 m tall, 30 cm DBH. Leaves simple, ing out that N. kuhlmannii was 4-merous and had alternate, ovate to oblong-elliptic, 6-13 X 3-8 cm, flowers disposed in a racemose inflorescence. Kuhl apex acute to shortly acuminate, base rounded to mann did not mention anther shape. These character subcordate, chartaceous, deciduous, margin subentire istics matched those of the described species of to inconspicuously serrate with papillate apices of the Neosprucea and were unlike those of Banara. teeth, venation actinodromous, petiole 2-4.5 cm long, In 1978, however, Sleumer transferred the species apex of petiole bearing a pair of thick, projecting, cup to Banara without comment, presumably because he shaped glands. Inflorescence a terminal, congested, had then seen flowers and realized that the globose to fascicle- or umbel-like raceme of 3 to 9 flowers; sepals ellipsoidal shape of the anthers was characteristic of and petals 3 or 4, creamy yellow, ca. 1 cm long, Banara, not Neosprucea. Sleumer (1980) maintained deciduous in fruit; stamens numerous (ca. 100 to 130), this treatment of the species as Banara kuhlmannii anthers ellipsoidal, longitudinally dehiscent; disk (Sleumer) Sleumer in his monograph of the Neotrop glands present, consisting of a single whorl of 6 to ical Flacourtiaceae. 8(to 9) pad-like or crateriform disks, ca. 1 mm diam., The first specimen of Banara kuhlmannii that I with stamens arising inside, outside, and between the examined (A. M. de Carvalho et al. 6689, MO) was glands; ovary superior; style 1; stigma consisting of annotated by Ron Liesner in 2000 as "If Flacourtia several minute craters at the apex of the abruptly ceae, new genus! To me it looks like a Flacourt! Need expanded style. Infructescence of few fruits, often fls [flowers]." Although the species had already been consisting of only 1. Capsule globose, 3-5 cm diam., described, his intuition was correct. The species has multiseeded, with 8 or 9 highly intruded parietal several characters atypical of either Banara or placentae, fruit wall subcoriaceous but brittle, base of Neosprucea. The glandular apices of the leaf teeth style persistent. Seeds exarillate. are papillate (violoid) instead of spherulate (salicoid) or torus-shaped (see Leaf Architecture Working Macrothumia is a new genus allied to Ahernia and Group, 1999; Hickey & Wolfe, 1975; Alford, 2005), Pleuranthodendron. Macrothumia has parietal
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