• Document: Lytocaryum, Including a New Species from Bahia, Brazil
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PALMS Noblick & Lorenzi: Lytocaryum Vol. 54(1) 2010 Lytocaryum, LARRY R. NOBLICK Montgomery Botanical Center 11901 Old Cutler Road Including a Miami, FL 33156, USA lnob@montgomerybotanical.org New Species AND HARRI LORENZI from Bahia, Instituto Plantarum de Estudos da Flora Brazil Av. Brasil, 2000 Nova Odessa, Sao Paulo 13460-000, Brazil 1. Lytocaryum weddellianum, a popular cultivated palm. Photo by H. Lorenzi. With its gracefully spreading, delicate-looking, pinnate foliage, Lytocaryum is a very attractive genus. The glossy dark green foliage with the contrasting silvery, ashy gray or brownish undersides is visually very appealing. Lytocaryum weddellianum (Fig. 1) has been cultivated for years as an indoor plant. Lytocaryum is native to southeastern Brazil. Currently there are only two recognized species: L. weddellianum and L. hoehnei (Fig. 2). This paper will demonstrate that there should be four recognized species, including a species described here for the first time, L. itapebiensis. PALMS 54(1): 5–17 5 PALMS Noblick & Lorenzi: Lytocaryum Vol. 54(1) 2010 What Lytocaryum species have in common History of the Genus Lytocaryum palms have a solitary, columnar or In 1871, Hermann Wendland described the rarely acaulescent stem and the above ground first species as Cocos weddelliana. Wendland stems are usually rough, covered with wrote that “It was first discovered by Dr. persistent leaf sheath remnants. Leaves are Weddell [Hugh Algernon Weddell (1819– pinnate, with closely evenly (regularly) spaced 1877)] in 1831, on the southern slopes of the leaflets that are arranged in nearly the same Sierra dos Órgãos, in Brazil, and subsequently plane, dark glossy green above with silvery by Riedel in 1832, in woods near Macahé gray or pale brownish pubescence beneath. [Macaé].” However, it is more likely that The inflorescence is borne among the leaves Weddell collected it much later (ca. 1843), and branched to one order. Like most Arecoids, when he was selected to join the scientific flowers are unisexual and borne in triads (one expedition of the naturalist, Comte F. de female flower flanked by two males) near the Castelnau (1810–1880) to South America. base of the primary branches and dyads (two Weddell would have only been 12 years old in males) or single male flowers near the apices 1831. In the same paper Wendland further of the branches. Fruits are ovoid to ellipsoid writes “It was introduced to the Belgium with the rather uncommon character of the Gardens at the beginning of the last epicarp and mesocarp usually splitting decennium [ca. 1860], by Mr. Louis Van Houte, (dehiscing) along several vertical sutures, of Ghent, and some years afterwards was exposing the endocarp beneath. Often imported by Mr. Linden, of Brussels, and described as splitting into two or three sections distributed under the name of Leopoldinia (Fig. 3), the outer layers of fruit can split into pulchra, a genus with which it has nothing more than just three sections (Fig. 9). The whatever to do. At still a later date it appeared endocarp or nut is very thin and fragile. For a under the name of Glaziova elegantissima. I am more detailed description of the genus one informed that Martius considered it as should consult Dransfield et al. (2008). constituting a new genus and that to him the 2 (left). Lytocaryum hoehnei plant in habitat, a high altitude, rainforest palm from São Paulo. 3 (right). Lytocaryum hoehnei infructescence showing splitting of the epicarp and mesocarp layers into 2 or 3 sections. Photos by H. Lorenzi. 6 PALMS Noblick & Lorenzi: Lytocaryum Vol. 54(1) 2010 name Glaziova is to be referred, but I can see and described many plants. In 1891, Kuntze no difference between it and Cocos.” By developed his own controversial nomen- mentioning the name G. elegantissima in

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