1958] 



THE BOTANY OF THE GUAYAXA HIGHLAND PART III 



99 



I have examined the following Museu Goeldi specimens, all collected by 

 Ducke and determined by Hnber : 8008 (holotype of C. bracteosa), from Alto 

 Ariramba. 20/XII/1906 ; 10465, from Campos de Faro. 17/171910; 11636, from 

 Campo grande, Parintins, 8/V/1911 ; and 12101, campinha de cabeceira de Lago 

 Itapeeuru, 30/VII/1912. These Brazilian collections agree perfectly with the 

 Guianan material of A. tetraptera. The hypanthinm and calyx are sparsely to 

 moderately fine-setulose with gland-tipped hairs along the nerves, and not gla- 

 brous as described by Hnber. 



Macairea lanata Gleason subsp. eglandulosa Wurdaek, subsp. nov. 



Foliorum facierum snperiornm inferionimque et ramormn pili non glandu- 

 liferi. Staminum filamenta quandoque apicem versus cum glandulis brevistipi- 

 tatis 1-2 ornata. 



Type : shrub 0.2-0.4 m. flowers pink, abundant in sabanita 1 km east of 

 Maroa, elev. 120-140 m, Rio Guainia, Terr. Amazonas, Venezuela. Nov 27, 1953, 

 Bassett Maguire, John J. Wurdaek, & George S. Bunting 36440 (NY). 



Paratypes: same locality, April 16. 1953, Maguire 4' Wurdaek 35675 ; Sabana El Venad** 

 on left bank of Cafio Pimiehin above Pimiehin, elev. 140 m, Terr. Amazonas, Venezuela, Ma- 

 guire, Wurdaek <$■ Bunting 3634S ; Sabana El Venado, April 14, 1953. Maguire <jr Wurdaek 

 35560. 



Typical .V. lanata has been collected only in the cumbres of Cerros Duida 

 and Paru. The cumbre subspecies has the shorter tubercle-tipping hairs on the 

 upper leaf surface gland-tipped (the longer ones being eglandular ) and the 

 lower leaf-surface with many short gland-tipped hairs as well as longer glandu- 

 lar or eglandular ones; the branch hairs at least in part are gland-tipped. The 

 stamen filaments in the cumbre collections always seem to be eglandular. In 

 the population centered around Maroa and Carlo Pimiehin, all upper leaf-surface 

 hairs are long and eglandular. The filament glands in the lowland subspecies 

 are sporadic- within the same flower and sometimes are completely lacking; a 

 few stamen connective appendages with a single gland were observed. One 

 intermediate between the two subspecies has been collected: Maguire, Cowan. 

 ((• Wurdaek 30890. from a dry montane savanna on the east slopes of Cerro 

 Moriche. Rio Ventuari. elev. 800 m. Tn this collection, some of the upper leaf- 

 surface and many of the lower leaf-surface hairs are gland-tipped, but a very 

 few stamen filaments bear glands. 



Macairea axilliflora Wnrdack, sp. nov. 



.1/. stylosae Tr. in folia similis sed cum floribus subsessilibus multo minoribus 

 ovario biloculari. 



Frutex ramosissimus glaber glutinosus. Petiolus 5-8 mm longus; lamina 

 2.5-5 X 1-2 cm. elliptica vel vix obovato-elliptica apice hebetiacuta basi in 

 petiolum sensim attenuata vix (1-2 mm) triplinervia bis debiliter 5-plinervia 

 margine integerrima subtus densissime minutissimeque albido-granulosa. Flore's 

 in foliis superioribus axillares (1-4 pro folio) bracteis parvis suffnlti vix (0.5-1 

 mm ) pedicellati. Hypanthinm 2 mm longum. glutinosum dense albido-granulo- 

 sum ; calycis tubus 0.3 mm longus. lobis 1.1 X 0.8 mm triangularibus apice 

 breviter acuminatis basi distantibus. Petala 5 X 2.5 mm. oblongo-obovata apice 

 acuta. Stamuia in magnitudine paulo dimorpha glabra; filamenta 3.2-3.8 mm 

 longa ; antherae lineares non rostratae. ca. 2-2.2 mm longae. connective sub 

 loculis 0.6-0.7 mm producto. basi incrassato postice 0.2-0.3 mm producto antice 



