128 ON SOUTH-AMERICAN APOCYNACEA, 
tim angustatis, apice in acumen longiuscule angustum obtusulum subito constrictis, chartaceis, 
marginibus subrevolutis, glaberrimis, supra pallidissimis, opacis, nervis tenuibus subpromimulis, 
venis crebre transversis, subtus concoloribus, nervis venisque prominulis; petiolo subtenui, 
quam limbus 12plo breviore: racemis axillaribus, glabris, folio dimidio brevioribus; pedunculo 
alternatim plurifloro; floribus speciosis ; pedicellis tenuibus, calyce 3plo longioribus; sepalis obtuse 
ovatis, marginibus membranaceis ; corolla precedentis; staminibus in constrictionem infra medium 
insertis; antheris anguste linearibus, subconniventibus, apice cuspidatis, imo longiuscule divergenti- 
biaristatis, per medium dorsi crebre patentim villosis; disco quam calyx dimidio breviore, fere ad 
basin 5-lobo, lobis 6-denticulatis, ovariis zquilongo. In Guiana et Surinam: v. s. in herb. Mus. 
Brit. Acaouari (Sagot 283). 
A species differing from O. speciosa in its extremely pallid, oblong subcuneate leaves, 
with a long, narrow, obtusely linear acumen, and in its axils only 1 in. apart; the leaves 
61-7 in. long (including the acumen 9 lines long), 22-23 in. broad, on petioles 
6-8 lines long; peduncle 1 in. long; slender pedicels 6-7 lines long; ovate sepals 2j 
lines long, 14 line broad; corolla 23 in. long. 
4. ODONTADENIA Harrisin, nob.: Dipladenia Harrisii, Purdie, in Hook. Bot. Mag. tab. 4825; Walp. 
Ann. v. 496: Dipladenia Harrisonii, Müll. Linn. xxx. 446: Cycladenia Harrisonii, Lemaire, in 
Van Houtte, Illust. Hort. (1855) Miscel. p. 7: Odontadenia speciosa, Griseb. (non Benth.), Fl. 
Brit. W. I. p. 416. 
A magnificent cultivated species, much resembling O. speciosa. Its oblong leaves 
bave a narrow obtuse acumen, become gradually narrower from the middle towards the 
base, where they are slightly cordate, have many diverging nerves, are 14 in. long, 53 in. 
broad, on petioles 7 lines long; its paniele is copiously flowered ; pedicels 6-8 lines 
long; sepals oval, subacute, 4 lines long; tube of corolla funnel-shaped, 2 in. long, 
widening in the mouth to a breadth of near 1 inch, the border expanding to a diameter 
of 34 in., the segments being dolabriform, dextrorsely convolute, 14 in. long and broad; 
lobes of disk denticulate, enveloping the ovaries. 
The following species should be excluded from the genus, and thus transferred :— 
Odontadenia hypoglauca, Müll. Fl. Br. l. c. p. 118 = Angadenia hypoglauca. 
O. hypoglauca, Müll. tab. 35 A, p. 118 A. majuscula. 
O. nitida, Müll.p. 118. . . . vun. d muda. 
O. cordata, A. DC. p. 360, Müll. T c. p. 119 - . A. nitida. 
O. Póppigii, Müll. p. 119 : A. Pöppigü. 
O. geminata, Müll. (in parte) p. 119 . A. geminata. 
O. geminata, var. elegans, Müll. p. 120 . A. elegans. 
O. coriacea, Müll. Linn. xxx. p. 450 . A. coriacea. 
O. macrocalyz, Müll. Linn. xxx. p. 403 . Codonemma macrocalyz. 
O. angustifolia, A. DC. p. 360 Mitozus linearis. 
0) 
. lucida, Müll. L. c. p. 120 . 
: Rhabdadenia lucida, 
O. speciosa, Griseb. (non Benth.) l. c. p. 416 
Odontadenia Harrisii. 
