Miconia dodsonii Wurdack

• Authority

  Wurdack, John J. 1967. Plants collected in Ecuador by W. H. Camp. Melastomataceae. Mem. New York Bot. Gard. 16: 1-45.

• Family

  Melastomataceae

• Scientific Name

  Miconia dodsonii Wurdack

• Description

  
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  Latin Diagnosis - Sect. Cremanium. Speciebus 416-418 Monographiae Cogniauxii affinis, sed foliis suborbicularibus floribus 4-meris differt. Ramuli primum quadrangulati demum teretes sicut petioli densiuscule pilis erecto-incurvis 0.5-0.7 mm longis simplicibus armati. Petioli 0.7-1.3 cm; lamina 3-6 X 2.3-5.5 cm rígida late elliptica vel suborbicularis ápice rotundato vel abrupte 1-2 mm apiculato basi rotundata margine i. s. revoluto et obscure ciliolato-serrulato dentibus 0.2 mm altis et 1-2 mm inter se distantibus crassis ap-pressis, supra primum granuloso-furfuracea mox glabrata, subtus in nervis ner-vulisque sparse vel modice pilis simplicibus laxiusculis 0.5-1 mm longis obsita, 5-nervata nervis secundariis ca. 2 mm inter se distantibus supra impressis subtus elevatis tertiariis supra invisis subtus densiuscule reticulatis. Panicula 3-7 cm longa multiflora, axe principali sparse setuloso, ramis non setulosis primum vix furfuraceis demum glabratis; flores 4-meri 0.2-0.3 mm pedicellati (ut videtur sessiles), bracteis 1-1.5 mm longis oblongis mox caducis bracteolis setaceis 0.5 mm longis mox caducis. Hypanthium 1-1.5 X 1-2 mm in alabastris vix furfuraceum mox glabratum; calycis tubus 0.2-0.3 mm altus, lobis interioribus 0.3-0.4 mm altis rotundato-triangularibus, dentibus exterioribus callosis non eminentibus. Pétala glabra 1-1.3 X 0.9-1 mm asymmetrice obovata apice oblique rotundato vel vix emarginato. Stamina isomorphica glabra; filamenta 1.7-2.2 mm; antherarum thecae 1.1-1.2 mm longae oblongae apice truncato et late biporoso, connectivo dorsaliter ad basim vix (0.1 mm) tuberculato. Stylus 2-2.4 X 0.2-0.4 mm glaber apicem versus clavatus; stigma 0.4-0.55 mm diam.; ovarium 2-loculare 14-inferum ápice conico glabro 0.5-0.6 mm alto.

• Discussion

  Type Collection: C. H. Dodson & L. B. Thien 681 (holotype US 2365847; isotype MBG), collected at pass on Loja-Zamora road, Prov. Loja, Ecuador, elev. 2700 m, 18 Sep. 1961. “Shrub about 3 ft. tall; flowers white.’’ Paratypes: Bassett Maguire & Celia K. Maguire 44365 (NY, US), from km. 13-14 of Loja-Zamora road, elev. 2700 m, 28 Sep. 1959. “Bushy tree to 5 m. Flowers white”; Harling 5959 (S), from Loja road at Loja-Oriente border, elev. 2800 m, 14-19 Jul. 1959. “Shrub 1-1.5 m. Flowers greenish white.” Because of the 4-merous flowers, M. dodsonii would key in Cogniaux’ Monograph to species 482-485, but the pubescence and flowers suggest that the true affinities are with such species as M. micropetala Cogn. The secondary leaf nervation, but not the leaf shape or pubescence, is somewhat suggestive of M. loxensis (Bonpl.) DC.