38 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



mina antesepala: thecae 1.8-2 mm longae connectivo sub loculis antice 0.2- 

 0.3 mm prolongate) et in appendice cordiformi 0.6-0.9 mm longa lataque ter- 

 minato. Stamina intersepala : thecae 1.6 mm longae, connectivo antice 0.5 

 mm prolongato et lateraliter bidentato postice sub insertionem filamenti in 

 appendice 0.4 mm longa acuta prolongato. Stylus 3.5 X 0-2 mm apice clavatus 

 cum stigmate 0.5-0.6 mm diam. ; ovarium 3-loculare apice in conum glabrum 

 0.2 mm altum prolongatum; fructus (vix immaturus?) globosus non striatus 

 ca. 4 mm diam. cum calyce persistente. 



BRAZIL: Amapa: Serra do Navio, Rio Amapari, occasional in lowland forest along trail 

 to Serra do Viado via Water Supply Dam; tree 7 m tall, flowers white; 17 Nov 1954, 

 R. S. Cowan 38399 (holotype, NY); Serra do Navio; tree 6 m on southeast lower slopes 

 of Chumbo Ore Body, Cowan 38071; tree 10 ni on lower slopes of Observatorio Ore Body, 

 Cowan 38160 (paratypes). 



The leaf blades of M. lepidota have a length/width ratio of about 2 rather 

 than 3-4, as well as predominantly fulvous stellate-lepidote pubescence rather 

 than predominantly silvery white scales with only scattered fulvous ones; 

 the stamen connectives of M. lepidota are proportionately longer-prolonged 

 basally with much smaller basal expansion. M. cowanii has somewhat the aspect 

 of M. argyrophylla DC, which however has an indiscrete indumentum and 

 glandular-ciliate petals. M. punctata (Desr.) Don has a tawny indument, firmer 

 leaves, and anthers widest apically (rather than oblong with a relatively 

 smaller pore), at least in West Indian material. 



Miconia navioensis Wurdack, sp. nov. 



M. seriali DC, in aspectu arete affinis sed pubescentia tenuiori floribus vix 

 minoribus connectivo staminum antesepalorum subtus proportionaliter longe 

 prolongato. 



Sect. Miconia subsect. Serial {florae. Rami teretes cum petiolis foliis subtus 

 inflorescentiis hypanthiis calycibusque cum pube amorphica tenuissima adpressa 

 pallide fusca dense obsiti. Petioli 1-1.5 cm longi; lamina tenuiter coriacea 9-17 

 X 2.5-7 cm elliptica apice subabrupte acuminata (acumine 1-1.5 cm longo) basi 

 late acuta vel anguste obtusa margine integerrima 5-nervata nervis duobus 

 exterioribus inframarginalibus nervis secundariis numerosis ca. 2-4 mm inter 

 se distantibus supra vix impressis subtus graciliter elevatis tertiariis laxe 

 reticulatis, supra glabra, subtus cum nervis primariis secundariisque subgla- 

 bratis. Iifflorescentia paniculata 6-10 em longa ramis longis arcuatis multifloris 

 cum floribus secundis; flores 5-meri sessiles. Hypanthium (ad torum) 1.1 mm 

 altum; calycis tubus 0.7 mm altus apice subtruncatus lobis rotundatis vix 0.2 

 mm altis. Petala 2.4 X 1-1 mm obovata apice rotundato-subtruncata glabra 

 eciliata. Stamina distincte dimorphica ; filamenta 2.3-2.5 mm longa, antheris 

 per porum lateralem pro stamine magnum dehiscentibus. Stamina ante- 

 sepala: thecae 1.4 mm. longae connectivo usque ad insertionem filamenti 0.6 

 mm prolongato et sub insertionem postice in appendicem 0.45-0.6 mm oblongam 

 basi rotundato-truncatam armato. Stamina intersepala: thecae 1.2 mm longae. 

 connectivo usque ad insertionem filamenti 0.3 mm prolongato et lateraliter 

 ad 0.4 mm expanso postice sub insertionem in appendicem anguste triangularem 

 0.5 mm prolongato. Stylus 4.2 X 0.35 mm apice in stigmate truncato 0.4 mm 

 diam. indistincte expansus; ovarium 3-loculare apice in conum subhemisphaeri- 

 cum 0.5 mm altum glabrum prolongatum. Fructus ignotus. 



BRAZIL: Amapa: Serre do Navio, Rio Amapari, occasional in forest on Fritz Akerman 



