42 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. 10 



postiee in appendicem triangularem prolongate Stylus. 4.2 X 0-4 mm apice vix 

 (ad 0.5 mm diam.) in stigma truncatum expansus; ovarium 3-loculare apice 

 truncatum et minute granulosum. 



M. gnaiquinimae Wurdack subsp. guaiquinimae. 



Lamina usque ad 9 X 4.5 cm late elliptica apice subabrupte breviacuminata 

 basi rotundato-obtusa proportione longitudinis/latitudini ca. 2 :1. 



VENEZUELA: Bolivar: Cerro Guaiquinima, Rio Paragua, infrequent in quebrada below 

 southeast escarpment, alt. 1600-1700 m ; tree 4 m high, flowers white and very fragrant; 7 Jan 

 1952, Bassett Maguire 33024 (holotype, NY), lower slopes of Ilu-tepui, occasional in low 

 Clusia-Magnolia woodland on ridge east of Mesa Grande, alt. 1650 m; tree 10 m in bud; 9 

 Mar 1952, Maguire 33320 (paratype). 



M. guaiquinimae Wurdack subsp. angustifolia Wurdack, subsp. nov. 



Lamina usque ad 15 X 5 cm anguste elliptica apice graditer acuminata basi 

 late acuta proportione longitudinis/latitudini ca. 3-4:1. 



VENEZUELA: Bolivar: Cerro Guaiquinima, occasional in mixed montane forest at Inter- 

 mediate Camp, alt. 1200 m; tree 15 m tall; 14 Jan 1952, Bassett Maguire 33102 (holotype, 

 NY). 



Both M. pilgeriana and the closely related M. stellipilis Cogn. have much 

 sparser foliar pubescence, with individually much larger stellate hairs, and 

 considerably smaller flowers, with the hypanthium plus calyx only 1-2 mm long. 

 The pubescence of M. guaiquinimae is intermediate between these two subandean 

 species and that of the scorpioid-cymed group centering around the poorly dis- 

 tinguishable species M. punctata (Desr.) Don and M. lepidota DC; M. semi- 

 sterilis Gleason, with compact-scorpioid inflorescence branches, seems to be 

 a very close relative of these two widespread species, but has stamens similar 

 to M. guaiquinimae and its relatives in sect. Glossocentrum. The inflorescence 

 pattern is basically quite different in the two species-groups, with the M. 

 pilg eriana-gr oup having four branches per main inflorescence axis node while 

 the M. punctata-group has two branches per node. 



Miconia perobscura Wurdack, sp. nov. Fig. 32, F-M. 



De affinitate mihi incognita sed ob stamina de sectione Amblyarrhenae. 



Ramuli sulcato-quadrangulati primum sparse cum pilis brevistipitatis stel- 

 latis muniti et densiuscule cum inflorescentiae ramis petiolis laminisque pilis 

 stellatis sessilibus obsiti. Petioli 4—13 cm longi apicem versus cum pilis brevi- 

 stipitatis* stellatis subpersistentibus densiuscule armati; lamina chartacea vel 

 subcoriacea (9-) 15-23 X (5-) 10-17 cm late elliptica apice abrupte breviterque 

 (ad 1 cm) acuminata basi late obtusa vel truncata ad margines inconspicue 

 crenulata 7-plinervata nervis primariis interioribus usque ad 7 cm supra basim 

 insertis paribus exterioribus 5-10 et 8-15 mm supra basim insertis nervis 

 secundariis 3-6 mm inter se distantibus et marginem versus paulo arcuatis 

 tertiariis laxe reticulatis, nervis ambiter supra subplanis subtus anguste elevatis, 

 nervis primariis subtus ad laminae basim cum pilis brevi-stipitatis stellatis 

 obsitis, superficie subtus subglabrata. Inflorescentia laxe paniculata usque ad 

 20 cm longa lataque; bracteae valde caducae vix carinatae in ramis primariis 

 oblongo-lanceolatae et ad 15 X 4 mm, in ramulis oblongo-ovatae et ad 7 X 4 

 mm sparse (in nervis densiuscule) stellato-puberulae. Flores 5-meri breviter 

 (1-3 mm) pedicellati cum bracteolis duabus conspicuis ca. 2.5-3.5 X 2.3 mm 

 in anthesi caducis ovalibus vel suborbicularibus sparse stellato-puberulis ad 

 basim hypanthii insertis investi. Hypanthium (ad torum) 2 mm altum dense 



