Tas. 7124, 
BIGNONIA rugosa. 
Native of Caraccas. 
Nat. Ord. BrgNonracrm.—Tribe BIGNoNIEZ, 
Genus Bienonta, Linn.; (Benth. et Hook.f. Gen. Pl. vol. ii. p- 1033.) 
Bienonta rugosa ; frutex scandens, totus hirsutus, caulibus sulcatis, ramulis 
teretibus, foliis 2-foliolatis, foliolis elliptico-oblongis acuminatis, basi 
cordatis v. rotundatis subtus reticulatim nervosis, nervis primariis validis, 
petiolo in cirrhum bifidum producto, floribus solitariis v. in cymas bre- 
vissime pedunculatas paucifloras confertis breviter pedicellatis, calyce 
campanulato ore trancato integerrimo, corolle primulinw extus glaber- 
rimz tubo elongato subcylindraceo basi contracto et intus piloso, limbi 
brevis subzequalis’ lohbis 5 patentibus 2 superioribus rotundatis 3 infe- 
rioribus late obcordatis, filamentis gracilibus glaberrimis arcuatis antheris 
parallelis loculis angustis divaricatis, staminodio filiformi, disco late 
conico glaberrimo, ovario parvo oblongo, stylo elongato grac'li, stigmate 
parvo 2-fido, capsula compressa. 
BP ragosa, Schlecht. in Linnea, vo]. xxvi. p. 656; Walp. Ann. vol. v. p. 522. 
In the absence of fruit, Bignonia rugosa was described 
as a doubtful species of the genus, and for its generic 
confirmation the Royal Gardens are indebted to their 
excellent correspondent, Dr. Ernst of Caraccas, who trans- 
mitted seeds to Kew in 1872, together with the description 
of the fruit which is given above. Its nearest ally is pro- 
bably a plant, a native of the Antilles, figured as Macro- 
discus rigescens- by Bureau in his beautiful Atlas of the 
flowers and fruit of the new genera into which he proposed 
to divide Bignonia, and of which the letter-press has most 
unfortunately never been published. As in B. rugosa the 
calyx is truncate, the corolla tubular with subequal lobes, 
the stamens and disk are the same, as are the fruit and 
seeds in all essentials. Macrodiscus is probably a well- 
founded genus. 
-B. rugosa was discovered by the collector Wagener in 
the province of Choco, United States of Columbia, at 
an elevation of four thousand feet, and is described as a 
climber, ten feet high. In the description by Schlechtendal 
and in native specimens from Dr. Ernst there are stipulary 
‘leaflets at the base of the petiole. 
Jury Ist, 1899. 
