Myrceugenia hoehnei (Burret) D.Legrand & Kausel
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Authority
Landrum, Leslie R. 1981. A monograph of the genus Myrceugenia (Myrtaceae). Fl. Neotrop. Monogr. 29: 1-137. (Published by NYBG Press)
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Family
Myrtaceae
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Scientific Name
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Type
Type. A. Gehrt s.n., São Paulo, Raiz de Serra (holotype, SP-17200).
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Synonyms
Luma hoehnei Burret
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Description
Species Description - Shrub 1-2.5 m high; hairs reddish-brown, simple and dibrachiate; twigs densely pubescent when young, glabrescent with age; leaves sparsely pubescent to puberulent above and below, glabrescent with age, elliptic to obovate, 2-4 cm long, 0.8-1.7 cm wide, 2.5-3.7 times as long as wide; apex acute, obtuse or acuminate, usually slightly mucronate; base acute, acuminate or cuneate; petiole channeled, pubescent, 1-3 mm long, 0.5-1 mm thick; midvein impressed above, prominent below; lateral veins indistinct or up to ca. 20 pairs distinguishable but not prominent; marginal veins equalling laterals in prominence; blades light to dark grey-green above, lighter grey-green to yellow-green below, coriaceous, the surfaces dull; peduncles uniflorous, flattened, 5-10 mm long, 0.5-1 mm wide, densely pubescent, solitary or in pairs in the leaf axils; bracteoles narrowly lanceolate to linear, ca. 2.8-6.2 mm long, 0.6-1 mm wide, 3.5-9 times as long as wide, subcoriaceous to coriaceous, densely pubescent without, less pubescent to glabrous within, loosely clasping the hypanthium; Calyx-lobes acute, triangular to ovate, ca. 3-4.5 mm long, ca. 1.5-3 mm wide, 1.2-2 times as long as wide, densely pubescent without, pubescent distally to glabrous proximally within; hypanthium densely pubescent, ca. 1.5-2.5 mm long; disk ca. 2-2.5 mm across, sparsely pubescent; style 4-5 mm long; stamens ca. 100, 3-6 mm long; anthers 0.4-0.5 mm long when dry; petals ca. 1.5-2.5 mm in diam.; ovary 3-locular as far as known; ovules 5-10 per locule; fruit dark blackish-brown when dry, pubescent, 4.5-6.5 mm in diam.; seeds probably few per fruit, 3-4 mm in diam.
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Discussion
Legrand has used the name Myrceugenia filibracteata (Burret) Legrand (1961) for this species, an epithet which is based on Luma filibracteata Burret (1941b). The holotype of Luma filibracteata, which was at B, has probably been lost and no isotype has been found. Although the description corresponds to M. hoehnei in some ways, the leaves are said to be 6-8 cm long and lanceolate or oblanceolate, whereas in M. hoehnei they are 2-4 cm long and mainly elliptic. Furthermore Burret indicates that L. filibracteata is similar to L. miersiana (=M. miersiana) and L. myrcioides (=M. myrcioides) and makes no mention of L. hoehnei which he describes two pages later. I think that L. filibracteata is most probably some form of M. miersiana, M. pilotantha or M. rufescens, or perhaps another species. If it turns out that it is a synonym of M. hoehnei, then one of the names will have to be chosen because the basionyms appear in the same publication. A good case could be made for using M. hoehnei because it has been in use in the genus for a longer time.
Myrceugenia hoehnei might be confused with M. pilotantha but can be distinguished by its channeled petiole and petals that are not pubescent. From M. rufescens, another similar species, it can be distinguished by its Calyx-lobes that become reflexed as they mature and that are not concave throughout the entire inner surface; its hairs that are a mixture of simple and dibrachiate, not all simple as they usually are in M. rufescens; and its flowering period which is from March to July not August to October.As far as is known, Myrceugenia hoehnei inhabits the misty forests of the eastern edge of the planalto. A map of its distribution is shown in Fig. 22. Only one fruiting specimen is known, that collected in December. -
Distribution
Brazil South America| São Paulo Brazil South America| Santa Catarina Brazil South America|