ON SOTJTH-AMEEICAN APOCYNACILE. 51 



5. BoNAFOusiA ATTENUATAj nob. : ramulis tenuibus, dichotomis : foliis ellipticiSj imo canaliculatim 



acutis, apice in acumen longe lineare obtusulum recurvum subito attenuatisj tenuiter chartaceis, 

 marginibus subundulatis paullo revolutisj supra Isete viridibusj subopacis, nervis tenuissimis, sub- 

 patentibus, immersisj subtus flavide pallidioribusj opacis, nervis vix prominulis, omnino eveniis; 

 petiolis tenuibus, canaliculatis, imo fossatisj marginibus linea transversali nexis, limbo lOplo 

 brevioribus : racemo axillari, vel in dicbotomiis erecto, folio dimidio breviore ; pedunculo brevi, 

 paucifloro; pedicellis calyce 4plo longioribus; floribus majusculis, plerumque caducisj sepalis 

 ovatis, membranaceis, imbricatis, intus squamulis pluribus imo munitis ; coroUse tubo cylindricOj 

 supra medium inflato, carnoso, fauee constricto, limbi segmentis lineari-oblongis, pro tertia parte 

 erectiSj et dehinc introflexis intra faueem descendentibus, staminum apices amplectentibus, in sesti- 

 vatione sinistrorsum convolutis, demum expansis ; staminibus inclusis, supra medium tubi ad coH- 

 strictionem affixis, antheris in coimm cobserentibus ; disco cylindrico, membranaceOj ovariis bis 

 triente brevioribus omnino adnato ; stylo clavuncula et stigmate generis. In Guiana Batav. et 

 Brit., et in Cayenne : v. s.in hb. Mus. Brit. Surinam (Hostmann 1314) ; Acaravuary, Guiana (Sagot 

 993. sub T. ohlongifolia) ; Cayenne (Martin, sub T. neriifolia). 



The leaves are 2^-3 J in. long, f-lj in. broad, on petioles 3-4 lines long ; the peduncle 

 is 6 lines long, marked by crowded cicatrices of fallen flowers ; pedicels 4-6 lines long ; 

 sepals 1 line long; tube of corolla 1 in. long; knob of bud oblong-obovate, linear 

 segments expanded, 8 lines long. 



6. BoNAPousiA Perottetii, nob. : TaberruBmontana Perottetii, A. DC. I. c. p. 362. In Guiana Gallica : 



non vidi. 



A species apparently near S. undulata, with a similar dichotomous habit ; leaves acute 

 at the base, with an obtusely linear acumen and undulate margins, 4-6 in. long, 1-2 in. 

 broad, on stoutish petioles broadly channelled, 3 lines long : terminal raceme 5-8 lines 

 long, on a short peduncle, bearing 5-7 flowers, on pedicels 3 lines long, thickened at 

 the apex, bracteolated at the base; sepals ovate, imbricated, unequal; coroUa in bud 

 6 lines long, the tube being pubescent in the mouth. Follicles semi-globular, somewhat 

 compressed, with a lateral curving ridge IJ in. long, 1 in. broad ; disk and form of seg- 

 ments of corolla unknown. 



7. BoNAFOusiA GuYANENSis, nob. : Tabermsmontana Guyanensis, Miill. Linn. xxx. 404. In Guyana 



(Poiteau) : v. s. in herb. Mus. Brit. Surinam (Miguel, sub Tab. oblongifolia). 



A species closely allied to the preceding, and said to approach T. disticha and oblongir 

 folia. It has terete angular branches,- with internodes 5-6 in. long, and slender, com- 

 pressed branchlets, with remote axils : the leaves are oblong elliptic, roundish and suddenly 

 acute at the base, shortly cuspidate at the apex, crenulated on the margins, glabrous, 

 subchartaceous, pallidly green above, with 10-12 pairs of divaricated, ascending, pro- 

 minulent nerves arcuately conjoined, yellow opake beneath, with prominent reddish 

 nerves, 4|-7 in. long, 2f-3 in. broad, on petioles hoodingly fossate, 1-2 lines long; 

 panicles axillary, compact, 3 in. long, 5-8-flowered on a pubescent peduncle bare for 1 in., 

 dichotomously and shortly branched, and bearing 8 or more closely approximated flowers 

 on pedicels 2^ Knes long, supported by acutely ovate ciliolated bracteoles ; sepals obtusely 

 obovate, ciliated on the margins, IJ line long, with an inner deeply 3-laciniated scale ; 



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