364 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



I 



M. Pichon's new genus Micropaegma is unfortunately abortive, as its type 

 species is M. "brachycalyx (Klotz.)" Pichon, based on Bignonia bracbycalyx 

 Klotzsch = Anemopaegma brachycalyx Bur. & K. Schum. That species, as I 

 showed many years ago, in Rec. Trav. Bot. Neerl. 34:216, 218 (1937), is con- 

 specific with Mussatia prieurei (DC.) Bur. ex K. Schum. At the same time (p. 222), 

 I showed that Anemopaegma cupulaturn Bur. & K. Schum., as to their description, 

 was identical with Potamoganos microcalyx, its queried basonym, Bignonia 

 cupulata Splitg., being a synonym of P etastoma patelliferum (Schl.) Miers. 



Pyrostegia dichotoma Miers ex K. Schum. 



VENEZUELA: Territorio de Amazonas: woody vine with bright orange fls., 

 along river near mouth of Caho Manariche, Alto Rio Orinoco, 150 m, March 29th 

 1953, B. Maguire & J. J. Wurdack 34754. Hitherto known only from Amazonian 

 Peru and Brazil. 



Pyrostegia venusta (Ker-Gawl.) Miers. 



VENEZUELA: Bolivar: vine 2-5 m, climbing in shrubs, occasional between 

 Upata and Carhuachi along main highway west of Upata, 150-300 m, fl. and fr. 

 April 29th 1955, /• /• Wurdack & F. W. Wright 406. Brazil, Paraguay, northeastern 

 Argentina, and Bolivia. 



Commonly cultivated in many parts of tropical America. Apparently the first 

 record for Venezuela (but planted, or an escape, in this locality?). 



Tabebuia insignis (Miq.) Sandw. var. orinocensis Sandwith, var. nov. 



Juxta var. insignem atque var. monophyllam Sandw. ponenda necnon ulterius 

 comparanda, foliis 1-3-foliolatis, foliolis pro rata satis parvis lateralibus basi 

 sessilibus obliquis inaequilateris junioribus subtus nonnunquam velutino-lanato- 

 tomentosis, capsulis pro rata latis, alis seminum pro rata longis notabilis. 



Shrub, nearly leafless at the time of flowering. Leaves, when 1-foliolate, with 

 a short petiole 1-3 cm long, the lamina attached without an evident petiolule to a 

 joint at the swollen apex of the petiole, elliptic, very shortly broadly obtusely 

 acuminate at the apex, attenuate to the cuneate base, 6-13 cm long, up to 4.5 cm 

 broad, coriaceous, when very young sometimes wooly-tomentose and velvety 

 beneath, copiously lepidote on both surfaces, otherwise glabrous, main lateral 

 nerves about 7 on each side of the midrib, arcuate-ascending; 3-foliolate leaves 

 with petioles 4 cm or more long, and with sessile lateral leaflets which are 

 conspicuously oblique and unequal-sided at the base, the terminal leaflet with 

 a petiolule up to 1.5 cm long, the leaflets with measurements not exceeding those 

 of the 1-foliolate leaves. Calyx 1.2-1.7 cm long, about 1 cm broad, unequally and 

 irregularly lobed, more or less lepidote, eglandular. Corolla white, the tube and 

 throat yellow within, the hairs on the anterior inner side of the tube short and 

 stiff. Capsule rostrate-acuminate at the apex, 10-15 cm long, 1.3-2 cm broad. 

 Seeds up to 4 cm broad, the body greyish, the wings membranous, white and 

 hyaline-shining, 1.4-1.7 cm in length (i.e. in relation to the axis of the body). 



VENEZUELA: Territorio de Amazonas: locally frequent on laja on Isla Raton, 

 Rib Orinoco, between Sanariapo and San Fernando de Atabapo, 120 m, fl. and fr. 

 Feb. 1954, B. Maguire, /. /. Wurdack & G. S. Bunting 37701 (Kew). 



VENEZUELA: Amazonas": frequent on crystalline laja 1-1.5 1cm east of Hotel Ama- 

 zonas, Puerto Ayacucho, 100-120 m, fl. and fr. Feb. 1954, Maguire, Wurdack & Bunting 

 37702; in open scrub savanna on white sand^ Cerro^ Sipapo (Paraque), 200 m, fr. Feb. 

 1949, B. Maguire & L. Politi 28977 (NY). Bolivar: Rio Orinoco, in thin scrub savanna on 

 rounded granite outcrop 10-15 km below La Urbana at Cano Sambolje, 100 m, fl. and fr. 

 March 1949, B. Maguire & B. Maguire Jr. 28993. 



