TAB. 8556. 
PITHECOCTENIUM cynancHorDEs. 
Brazil to the Argentine. 
BIGNONIACEAE. ‘Tribe BIGNONIEAE. 
PitHEcocTEenIuM, Mart.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 1038. 
Pithecoctenium cynanchoides, DC. in DC. Prodr. vol. ix. p. 195; Bur. ¢ 
K. Schum. in Mart. Fl. Bras. vol. viii. pars 2, p. 166 ; foliis parvis caudato- 
acuminatis distinctum. 
Frutex scandens. Ramuli graciles, quadrangulares, 6-costati, novelli minute 
puberuli, mox glabrati. Folia opposita, petiolata, trifoliolata, foliolo 
terminali saepe in cirrhum apice trifurcatum commutato; petioli 2-3 cm. 
longi, pilosuli; petioluli similes, saepe longiores ; foliola late ovata, acute 
caudato-acuminata, basi late cordata, 4-5 cm. longa, 3°5-4°5 cm. lata, 
minute ciliolata, supra sparse minute subtus densius lepidota, lepidibus 
oculo armato tantum visis. Racemus terminalis, pauciflorus; pedicelli 
circiter 1:5 cm. longi, medio bibracteolati. Calyx cupularis, truncatus, 
nervis productis 5-dentatus, circiter 8 mm. longus dentibus exclusis, extra 
molliter pilosus, minute densiuscule lepidotus, superne circa mervos minute 
impresso-glandulosus. Corolla alba, intus lutea, tubulari-infundibularis, 
4-5 cm. longa, prorsum curvata, limbo patulo. Stamina 4, didynama, 
anteriora longiora, ut staminodium posticum circiter 7 mm. supra basin 
corollae inserta; filamenta basi incrassata, pilis moniliformibus villosis- 
sima; antherae loculis discretis late divergentibus oblongis vix 3 mm. 
longis. Ovariwm compresso-ellipsoideum, breviter tomentellum, biloculare, 
disco magno pulvinari insidens; placentae pro loculo 2, multiovulatae, 
ovulis pluriseriatis; stylus supra ovarium valde contractus deinde incras- 
satus; stigmatis lobi plani, foliacei. Capsula oblonga utrinque angustata, 
7-8 cm. longa, appendice septi capitato terminata, valvis more limae 
muriculatis. Semina transverse inserta, plana, hyalino-alata, corpore 
ambitu pyriformi.—P. clematidewm, Griseb. Symb. Fl. Argent. p. 257. 
Anemopaegma clematideum, Griseb. Pl. Lorentz. p. 174.—T. A. SPRAGUE. 
The Bignoniad here figured has been in cultivation at 
Kew since 1884, when its seeds were presented by 
Dr. Dormer, who collected them to the west of the 
Argentine Republic. It flowered for the first time in 
1895, and has frequently flowered in summer since. The 
genus Pithecoctenium to which it belongs 1s one of the 
best characterised in the natural family Bignoniaceae ; 1t 
may be recognised at once by the capsule, which is 
variously muricate or tuberculate outside and is ter- 
minated by a capitate appendage of the septum; the 
young branches always have about six prominent ribs 
which are subsequently thrown off. Our species, 
May, 1914. 
