16 ON SOUTH-AMERICAN APOCYNACEJE. 
plant collected in Cayenne by Martin, preserved in the British Museum. I have not 
adopted Aublet's generic name, as it might be confounded with his genus Couepia, with 
his Goupia, and with DeCandolle's Cupia, but have given its vernacular, Cupi-rana (wild 
Cupi), a name given to it to distinguish it from the true Cupi ( Couepia guianensis, Aubl.). 
The floral characters in the following diagnosis are derived from my own analysis of 
Martin's plants, which show two very distinct species ; those of the fruit are derived whol! 
from Aublet's description and drawing, with the necessary correction. 
CuriRANA, nob. Coupoui, Aubl.; Calyx tubulosus, margine truncato obsolete 5-denticulato, crassiuscu 
lus, 5-nervis, e laminis 2 separabilibus constans, inferiore tenuiter membranacea, enervi, margine 
breviter ciliato, ezeriore breviter 5-dentata, demum in lacinias 5 rupta, persistens. Corolle tubus 
calyce paullo longior, crassus; limbi segmenta 5, lanceolata, acuta, tubo duplo longiora, imo brevis- 
sime auriculata, crasse carnosa, opaca, erecto-expansa, sestivatione valde imbricata et sinistrorsum 
simpliciter convoluta. Stamina 5, inclusa, laciniis alterna, imo tubo inserta; filamenta brevissima, 
lineari-membranacea; anthere biloculares, imo cordatee, sinu dorsali affix, loculis anguste linearibus 
ad connectivum tenue apice cuspidatim excurrens dorso adnatis, utrinque rima longitudinali 
introrsum dehiscentibus; pollen subtrigonum, e granulis coherentibus. Discus parvus, breviter 
urceolatus, margine crenatus, glaber. Ovarium depresse globosum, bisuleatum, glabrum, disco 
insitum, eodem dimidio brevius, liberum, biloculare; ovula pauca, axi affixa. Stylus corolle tubo - 
dimidio brevior, tenuis, sub-4-angulatus, angulis hispidulis, imo pilosus, apice incrassatus ; clavuncula 
cylindrica, simplex, aut glandulis 2 linearibus oppositis rigide hispidulis signata: stigmata 2, acute 
linearia, membranacea, adpressa, glabra, glandulis alterna et :quilonga. Drupa majuscula, ovata, 
calyce persistente rupto suffulta, abortu unilocularis, monosperma; semen magnum, amygdalinum. 
Arbores in Cayenna vigentes, frondose; folia magna, oblongo-lanceolata, nervosa; flores plurimi, 
singulatim. pedicellati, summis ramis congesti; pedicelli longi aut breves, imo bracteati; drupe 
magne, indehiscentes. 
1. CUPIRANA AUBLETIANA, nob.: Coupoui aquatica, Aubl. Pl. Guian. ii. Suppl. p. 17, tab. 377 : procera, 
trunci cortice levi, viridi; ramis crassiusculis, nudis; ramulis angulato-striatis, fistulosis, medulla 
repletis: foliis circa 6, alternis, ad apicem ramulorum congestis, magnis, lanceolato-oblongis, infra — 
medium subangustioribus, imo cordatis, auriculis rotundatis et imbricantibus, sursum gradatim 
angustatis, apice repente acuminatis, glaberrimis, supra pallide viridibus, undique opacis, in costa - 
nervisque sulcatis, venis reticulatis, subtus costa nervisque prominentibus; petiolo angulato, glabro, _ 
imo crassiore, limbo 4—5plo breviore: floribus circa 18, in apice ramulorum congestis; pedicellis - 
teretibus, calyce 4plo longioribus, imo bracteatis; bractea oblonga rubra, intus dense ramentacea — 
et rufo-tomentosa: calyce tubuloso, adpresse velutino; corolla calyce 3plo longiore, opaca, seg- ` 
mentis vix explicatis: drupa oblonga, immatura ejus Cifri medice magnitudine, viridi, imo calyce ` 
suffulta. In Guiana: v. pl. s. in herb. Mus. Brit, Cayenne (Martin) ; fructus non vidi. 
Aublet's specific name is not adopted, as it presupposes a small aquatic plant, | 
instead of a very tall tree. The trunk is smooth and greenish, with a soft white wood; its ` 
branchlets are filled with a soft pith. The leaves, aggregated at the summit of its bare ` 
branchlets, are, in the specimen quoted, 17-20 in. long, 7-81 in. broad, on petioles — 
4-43 in. long; according to Aublet they are 22 in. long, 9 in. broad: they are prettily ; 
marked with about 24 pairs of divergent nerves, arcuately conjoined within the margin. | 
About 18 flowers are aggregated on the summit of the branchlet, each on a pedicel some- ; 
what thickened above, nearly 2 in. long, and furnished at its base with an oblong sessile ` 
reddish bract 1 in. long and jin. broad: the calyx is 6 lines long, 34 lines in diam.; 
