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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 2 



achaeniis 12-15 mm. longis ca. 1.5 mm. diam. fusiformibus pallescentibus 10- 

 costatis, costis angustis, annulo ca. 0.25 mm. alto. 



TYPE: shrub or small tree to 6 m. high, flowers white-purplish, frequent 

 in open upper montane woodland, Cano Verada, 1200 m. alt., Cerro Guanay, Ama- 

 zonas, Venezuela, January 30, 1951> Bassett Maguire, Kathleen D. Phelps, 

 C. B. Hitchcock & G. Budowski 31655; New York Botanical Garden. Paratypes: 

 Amazonas, Venezuela: small tree 3 m. high, flowers white and lavender, Cerro 

 Yavi, alt. 2000 m., March 1-3, 1947, Phelps & Hitchcock 79; small tree, occa- 

 sional along stream above Culebra Falls, North Escarpment, Cerro Duida, 1400 

 m. alt., April 23, 1949, Maguire & Maguire 29072; tree to 6 m. high, frequent in 

 montane savanna along stream, 800 m. alt., Cerro Moriche, Jan. 14, 1951, Maguire, 

 Cowan & Wurdack 30914; dominant cumbre tree 2-5 m. high, frequent, summit 

 Cerro Moriche, 1250 m. alt., Maguire, Cowan & burdock 30956; tree 3 m. high, 

 leaves red-margined, fruit post-mature, summit Cerro Moriche, 1250 m. alt., Ma- 

 guire, Cowan & Wurdack 30961; tree 5 m. high, 30862; tree to 10 m. high, co- 

 dominant with Gleasonia duidana Standi., Cerro Camani, 1800 m. alt., Maguire, 

 Phelps, Hitchcock & Budowski 31819, 



So far as known, Gongylolepis panic ulata is confined to sandstone mountains 

 of Amazonas in southern Venezuela. It is evidently the most widespread species 

 of the genus in the western part of the Guayana Highland. Although of relatively 

 wide distribution, G. paniculata forms a fairly homogeneous population. As now 

 recognized, there is one departure — a variant of the curnbre of Cerro Guanay in 

 which the inflorescence is umbellate and the leaves smaller, more nearly elliptic 

 and less prominently veined than in the var. paniculata. 



Gongylolepis paniculata Maguire & Phelps var. umbellata Maguire & Phelps, var. 

 nov. 



Inflorescentia umbellata, foliis plus-minus ellipticis, supra venis inconspicue 

 prominulis. 



TYPE: shrub or tree to 4 m. high, inflorescence umbellate, flowers white, 

 occasional, thicket about pool, cumbre Cerro Guanay, Terr. Amazonas, Vene- 

 zuela, 2000 m. alt., February 2, 1951, Bassett Maguire, Kathleen D. Phelps, C. 

 B. Hitchcock & G. Budowski 31711; New York Botanical Garden. 



5» Gongylolepis yapacana Maguire, sp. nov. 



Arbor parva 15 m. alta; ramis ca. 1 cm. crassis dense fulvo-pilosis denique 

 glabrescentibus, internodiis 1 cm. vel minus longis, foliis oblanceolatis ferme 

 chartaceiar 12-22 cm. longis 4-9 cm. latis, apice obtuso, basi angusta, nerviis 

 primariis 16-20 jugis prominulis ad margines anastomosis, secondariis venulisque 

 prominenter reticulatis, foliis juvenilibus puberulis mox glabrescentibus, costa 

 et petiolo dense subpilosis denique glabriusculis; inflorescentia corymbosa; pe- 

 dunculo 15-30 cm. longo ad basim pubescenti, bracteis foliaribus elliptico- 

 oblongis vel ovatis obtusis sessilibus vel brevi-petiolatis 2-7 cm. longis 1-3 cm. 

 latis; capitulis immaturis sed evidenter anguste campanulatis excedentibus 2.5 

 cm. longitudine; cogenera in sectione Paniculata similia. 



TYPE: trees to 15 m. tall, young leaves and stems pubescent, frequent in 

 cumbre at 1200 m., no trees with mature flowers observed, Cerro Yapacana, Ama- 

 zonas, Venezuela, January 3, 1951, Bassett Maguire, Richard S. Cowan & John J. 

 Wurdack 30706; New York Botanical Garden. Paratypes: Cerro Yapacana, Maguire, 

 Cowan <f- Wurdack: tree 7 m. high, near summit, 1000 m. alt., Jan. 2, 30631; cum- 

 bre 1200 m., vegetative shoots only, 30742. 



Gongylolepis yapacana appears to be confined to the isolated sandstone 

 table mountain, Yapacana, where it is one of the prominent elements of the rugged 



