134 



SI KM OIKS OF THE NEW YORK BOTANICAL GARDEN 



[voi, 10 



at a right angle with the midrib, straight, 50-70 pairs, fine, rather light, not 

 raised, sometimes forking near the margins of the leaf, the tertiaries obscure or 

 faint, foliar glands distributed along the upper side of the midrib; inflorescence 

 appearing axillary or subterminal, racemoid, 5-12-flowered, the peduncle up to 

 4.5 cm long; bracts ovate, 1-1.3 mm long, glabrous; pedicel up to 3 mm long; 

 sepals ovate-oblong, obtuse or slightly acute at the apex, 1-1.5 mm long, glabrous, 

 non-ciliate, calycine squamellae irregularly distributed ; corolla infundibuliform, 

 slightly dilated above the stamens and widening at the throat, glabrous outside, 

 white tingled with purple-red, the infrastaminal tube about 1 cm long, relatively 

 narrow, the suprastaminal tube about 1 cm long, the throat about 2 cm long, the 

 lobes about 2 cm long and as wide, the corolla-tube bearded below the stamens 

 within ; anthers about 4.8 mm long, glabrous ; ovary about 1 mm high, glabrous ; 

 nectaries 5, about 0.3 mm high; mericarps free (earlier united at the apex), 

 erect, linear, lightly torulose, 6-8 cm long, glabrous; seeds subscaphiform-fusi- 

 form, about 7 mm long, 1.5 mm broad, brown, densely hirtellous, the coma about 

 1-1.3 cm long, dark tawny. 



Type: Bassett Magnire, John J. Wurdack & George S. Bunting 36208, re- 

 gion of San Fernando de Atabapo, Territorio Amazonas, Venezuela, frequent 

 on laja on left bank of Cano Cupueni, right bank of Rio Orinoco opposite mouth 

 of Rio Atabapo, 120-130 m elev., Nov 12, 1953, weak scrambling shrub, corolla 

 white, pink-margined (holotype NY). 



Paratype: Bassett Magnire 29263- A, Kio Atabapo, Rio Orinoco, Amazonas, Venezuela, 

 frequent, on rocks along river, 15 km above San Fernando, Oct 17, 1950, reclining subshrub 

 or vine, flowers white tingled with purple-red. The following is probably also our variety: 

 Ismael Velez 2457, Rio Parguaza, Estado Bolivar, Venezuela, Rocas Altas de El Carmen, April 

 22, 1946, (USNH; the collection data appears in Velez 's catalog and was communicated to us 

 by Leandro Aristeguieta ) . 



M. lancifolia var. calva differs from the typical variety fn its completely 

 glabrous stem, broader leaves with more numerous, erect and straighter sec- 

 ondaries, and in its eciliate sepals. From the Colombian M. nerioides Woodson, 

 which it simulates superficially, it differs greatly in its venation. 



Mandevilla leptophylla (A. DC.) K. Sch. 



B. Magnire $ C. K. Magnire 40020, Serra Tepequem, Rio Branco, Brazil, occasional at 

 woodland edge, northeast slopes, elev. 850 m, Nov 22, ]954, vine, flowers yellow. Magnire 4'- 

 Maguire 40288, frontier between Territorio do Rio Branco, Brazil, and Estado Bolivar, Vene- 

 zuela, occasional on rocky outcrops in savanna between Vista Geral and Serro Sabang, elev. 

 720 m, Dec 16-18, 1954, twining vine, flowers yellow. Maguire $- Maguire 40306, frontier be- 

 tween Territorio do Rio Branco, Brazil, and Estado Bolivar, Venezuela, occasional on Serra 

 Sabang, elev. 1650 m, Dec 16-18, 1954, twining vine, flowers bright yellow. 



The leaves have been described as finely puberulent beneath. Those of 40288 

 are pilose-tomentulose beneath, but those of 40020 and 40306 are almost glabrous. 



Mandevilla surinamensis (Pulle) Woods. 



VENEZUELA: Bolivar: Wurdack 34386, Cerro Bolivar, infrequent above Tunnel #5, 

 elev. 750 m, Feb 25, 1953, vine in shrubs, corolla white with pink eye. Maguire 35805, frequent 

 on iron ore body at El Pao, May 1, 1953, vine, flowers white, pink-flushed. Maguire, Wurdack 

 4- Bunting 35922, occasional on upper slopes of Cerro Toribio, elev. 450-500 m, Oct 22, 1953, 

 woody vine in shrubs, corolla white with pink throat. 



The seeds of this species are now known. Follicles glabrous, about 10-15 cm 

 long, 3 mm thick; seeds brown, minutely hispidulous, about 7 mm long, the 

 coma pale tawny, about 2.5-3 cm long. 



