PITTTER — PLANTS FROM COLOMBIA AND CENTRAL AMERICA. 105 



or scarcely surpassing the inner corona. Stamens elongate, glabrous; anthers vertical, 

 opening at the top and covered by a scutelliform blade reflexed on the stigma. Reti- 

 nacles 0.5 mm. long, 0.17 mm. broad; pollinia pendulous, large (1.3 mm. long, 0.55 

 mm. in larger diameter). Ovaries very hairy. Stigma salver-like, with 5 trilobulate 

 tips alternating with the anthers. 



Follicles not known. 



Costa Rica: Forests of Las Vueltas de Tucurrique, Reventazon Valley; altitude 

 635 to 700 meters, Tonduz, flowers, March, 1899 (Institute ffs. geog. Costa Rica no. 

 13022; U. S. National Herbarium no. 472247, type); Valley of Tuis, Reventazon basin, 

 altitude 600 meters, Pittier, flowers, September, 1901 (Institute ffs. geog. Costa Rica 

 no. 16213); Tonduz, flowers, November, 1897 (Institute ffs. geog. Costa Rica no. 

 11554). 



This plant, strikingly distinct from any other species of the genus and especially 

 from the other Costa Rican species, was named Gonolobus pittieri in schedule by the 

 late K. Schumann. We change this specific name to magnifolius, which reminds 

 one of the good characters of the plant. It is a milky vine, growing in the shaded, 

 hilly forests of the lower Atlantic slope and very seldom found with flowers or fruits. 

 Mr. Donnell Smith identified the several specimens of this plant in his collection as 

 Gonolobus virkiiflorus Roem. & Schultes, a species from the low lands of Brazil and 

 the Guianas that is cited « as having been collected near Cartago by Oersted. But 

 a careful comparison of the said specimens with the original diagnosis b and the descrip- 

 tions in the Botanical Register c and the Flora Brasiliensis d does not confirm this view. 



Gonolobus pseudobarbatus Pittier, sp. nov. Figure 14. 



Stems voluble, round, covered with a dense, short pubescence, intermingled with 

 long, soft, brownish hairs. 



Leaves soft, of medium size. Petioles slender, 2.5 to 3 cm. long, at once short- 

 pubescent and pilose like the stems. Leaf blades 4 to 6 cm. long, 2 to 4.5 cm. broad, 

 rounded-ovate to ovate-lanceolate, cordate with generally broad rounded sinus and 

 auricles, acuminate; glandules at insertion of peduncles numerous and small; upper 

 face dark green, sparsely hairy on the veins and punctate; lower face greenish white, 

 with prominent, hairy, brown veins, and covered with minute, purple, gland-like 

 hairs; marg?n ciliate; acumen conspicuously barbate. 



Inflorescences umbellate, with 6 to 10 small flowers opening in succession. Pe- 

 duncles and pedicels hairy-pubescent, the former thick, about 2 cm. long, the latter 

 slender, about 3 cm. long when fully developed. Bracteoles small, lanceolate, bar- 

 bate. Lobes of calyx lanceolate, acute, about 5 mm. long, 2 to 2.5 mm. broad, densely 

 covered outside with long, soft hairs, smooth inside, alternating with small, claviform, 

 translucent glands. Lobes of corolla ovate, obtuse, 7 mm. long, 4 mm. broad, greenish 

 yellow with dark venules, covered outside with long soft hairs intermingled with 

 dark, gland-like spots, smooth inside except along the right margin, which is partly 

 covered with coarse white hairs. Corona prominent, fleshy, torulose, subpentagonal, 

 of a purple color, with 5 spathulate appendages inserted at the inner angles and con- 

 nected with the gynostegium. Gynostegium rather long-pedicellate. Anthers open- 

 ing above and horizontally, with inconspicuous outer appendages. Retinacle 0.3 mm . 

 long, 0.15 mm. broad, scutelliform; caudicles and pollinia pendulous, the latter about 

 0.75 mm. long. Ovaries free and smooth. 



Follicles not known. 



a Biol. Centr.-Amer. 2: 335. 1882. 

 b Syst. Veg. 6: 61. 1820. 

 c 13: pi 1126. 1827. 

 d 6: 36. 



