108 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



zonas, Venezuela, Nov 25, 1953, Bassett Maguire, John J. IV urdack, c(- (ieorgi N. 

 Bunting 36397 (NY). Paratypes : same locality, frequent shrub, petals magenta, 

 filaments white except for pink stripe just below anthers, April 17. 1953. Ma- 

 guire d' Wurdack 35717. 



Adelobotrys fruticosa Wurdack. sp. nov. 



A. barbatae Tr. affinis sed foliis plerumque minoribus foliorum indumento 

 subtus densissimo appresso inflorescentia non pedunculata calycis dentibus 

 maioribus. 



Rami juveniles dense rufo-villosi demum cinerei glabrati. Petioli lati, 3-10 

 mm lohgi; lamina 4-11 X 2-4.5 cm. elliptica apiee acuta basi obtusa vel trun- 

 cata 5-7-nervia nervis primariis supra et subtus Leviter elevatis nervis secun- 

 dariis supra paulo elevatis subtus obscuris, supra primum villosula demum 

 glabrata, subtus densissime strigulosa setis gracillimus primum rufescentibus 

 demum cinereis tarde in lamellis irregularibus dehiscentibus ; folia demum 

 deflexa. Inflorescentia capitata sessilis vel maxime ad 1 cm pedunculata in tdto 

 cum pedicellis hypanthiis calycibusque densissime rufo-strigosa pilis gracilibus. 

 Flores 5-meri breviter (ad 5 mm ) pedicellati, alal)astris submaturis solum notatis. 

 Hypanthium 6X4 mm ; calyx ad basim 1 mm coalitus. lobis ovatis 2.5 mm 

 longis, dente exteriorc 1.2 mm longo acuto. Petala late obovata obtusa. Stamina 

 dimorphica. maioribus cum antheris 4.7 mm longis, eonnectivi basi acuta 0.8 mm 

 producta appendice dorsali adscendenti 2.5 mm longa. apice breviter emarainata. 

 minoribus cum antheris 2.6 longis, eonnectivi basi acuta 0.6 mm producta annen- 

 dice dorsali adscendenti 2.5 mm longa apice rotundata. Ovarium 3-loculare 

 glabrum apice truncatum. 



Type: shrub 0.3-1.5 m, frequent in sabanita on riuht bank of Cano Pimichin 

 1 km above Pimichin, elev. 140 m, Rio Guainia, Terr. Amazonas, Venezuela, 

 Nov 24. 1953. Bassett Maguire, John J. Wurdack, & George S. Bunting 36392 

 (XY). Paratype : infrequent in woodland near Savanna Xo. 1. northwest base 

 of Cerro Yapacana, elev. 125 m. Rio Orinoco, Terr. Amazonas, Venezuela, Nov 

 20, 1953. Maguire, Wurdack, c(- Bunting 36608. 



A. barbata has leaves with petioles 1.5-3 cm lono' and blades up to 20 X 8 

 cm : the lower leaf-surfaces are moderately covered with stout semi-erect mal- 

 pighian hairs; the inflorescence is a short but definite panicle and the calvx 

 proper is only indistinctly lobed. A. barbata is known from Maroa. Venezuela, 

 and the u,pper Rio Negro drainage (Rios Vaupes, Piraparana. and Icana). 



Adelobotrys duidae (Gleason ) \Yurdack. comb. nov. 

 Meriania duidae Gleason, Bull. Torrey Club 58: 419. 1931. 



The umbellate inflorescence and fine brown cauline pubescence make this 

 species much more congruous with Adelobotrys, where the nearest relatives, 

 .1. fruciicosa Wurdack and A. barbata Tr.. are also both shrubs in a predomi- 

 nantly vining "-enus. The persistent pubescence of the upper leaf-surface and 

 the non-projectino- exterior calyx-teeth immediately distinguish .4. duidae: the 

 species is known only from the cumbres of Cerros Duida and Huachamacari. 



Graffenrieda hitchcockii Gleason var. parvifolia Wurdack. var. nov. 



A var. hitchcockii differt foliis minoribus ovatioribus subtus subglabratis. 

 Paniculae angustiores cum floribus paucioribus. 



Type: shrub or small tree 3 m high, petals white, stamens yellow, occasional 



