ON SOUTH-AMERICAN APOCYNACEZ, 51 
5. BONAFOUSIA ATTENUATA, nob.: ramulis tenuibus, dichotomis: foliis ellipticis, imo canaliculatim 
acutis, apice in acumen Jonge lineare obtusulum recurvum subito attenuatis, tenuiter chartaceis, 
marginibus subundulatis paullo revolutis, supra leete viridibus, subopacis, nervis tenuissimis, sub- 
patentibus, immersis, subtus flavide pallidioribus, opacis, nervis vix prominulis, omnino eveniis ; 
petiolis tenuibus, canaliculatis, imo fossatis, marginibus linea transversali nexis, limbo 10plo 
brevioribus: racemo axillari, vel in dichotomiis erecto, folio dimidio breviore; pedunculo brevi, 
paucifloro; pedicellis calyce 4plo longioribus; floribus majusculis, plerumque caducis; sepalis 
ovatis, membranaceis, imbricatis, intus squamulis pluribus imo munitis; coroll: tubo cylindrico, 
supra medium inflato, carnoso, fauce constrieto, limbi segmentis lineari-oblongis, pro tertia parte 
erectis, et dehine introflexis intra faucem descendentibus, staminum apices amplectentibus, in esti- 
vatione sinistrorsum convolutis, demum expansis; staminibus inclusis, supra medium tubi ad con- 
strictionem affixis, antheris in conum coh:srentibus; disco cylindrico, membranaceo, 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. oblongifolia) ; Cayenne (Martin, sub T. neriifolia). 
The leaves are 24-34 in. long, 2-11 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. Bonarousia Psrorretit, nob.: Tabernemontana Perottetii, A. DC. l. c. p. 362. In Guiana Gallica : 
non vidi. j 
A species apparently near B. 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; corolla in bud 
6 lines long, the tube being pubescent in the mouth. Follicles semi-globular, somewhat 
compressed, with a lateral curving ridge 14 in. long, 1 in. broad; disk and form of seg- 
ments of corolla unknown. 
7. Bonarousta GUYANENSIS, nob.: Tabernemontana Guyanensis, Müll. 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 oblongi- 
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, 42-7 in. long, 23-3 in. broad, on petioles hoodingly fossate, 1-2 lines long; 
panicles axillary, compact, 3 in. long, 5-8-fowered on a pubescent peduncle bare for 1 in., 
dichotomously and shortly branched, and bearing 8 or more closely approximated flowers 
on pedicels 24 lines long, supported by acutely ovate ciliolated bracteoles ; sepals obtusely 
obovate, ciliated on the margins, 13 line long, with an inner deeply 3-laciniated scale ; 
H 2 
