Prestonia quinquangularis (Jacq.) Spreng.

Prestonia quinquangularis (Jacq.) Spreng. Syst. 1: 637. 1825
Echites quinquangularis Jacq. Enum. PI. Carib. 13. 1760. H aemadictyon venosum Lindl. Trans. Hort. Soc. London 6: 70. 1825. Haemadictyon nutans A. DC. in DC. Prodr. 8; 426. 1844. Temnadenia quinquangularis Miers, Apoc, S. Am. 217. 1878.
SufFruticose liana, essentially glabrous throughout; leaves membranaceous, oblong-elliptic to ovateelliptic, 6-14 cm. long, 2-6 cm. broad, acute to shortly acuminate, obtuse to rounded at the base, conspicuously veined with red or purple when young, the petioles 10-20 mm. long; inflorescence racemose, simple, about as long as the subtending leaves, bearing 6-20 greenishyellow flowers; pedicels 7-15 mm. long; bracts ovate-lanceolate, 1-1.5 mm. long, subf oliaceous ; calyx-lobes ovate-lanceolate, acuminate, 1.5-2 mm. long, subfoliaceous, sharply reflexed; corolla salverform, minutely papillate externally, the tube 12-15 mm. long, about 2.5 mm. in diameter at the base, the epistaminal appendages about 1 mm. long, wholly included, the lobes obliquely obovate, 7-10 mm. long; anthers minutely pubescent dorsally, the tips slightly exserted; nectaries somewhat shorter than the ovary; follicles relatively stout, continuous, agglutinated and united at the tips, 20-35 cm, long, glabrous.
Type locality: [Cartagena, Colombia.]
Distribution: Martinique and Guadeloupe; also in Trinidad; reported from Venezuela and

Prestonia acutifolia (Benth.) K. Schumann, in
E. &P. Nat. Pfl. 42; 188. 1895.
Haemadictyon acutifolium Benth.; Muell.-Arg. in Mart. Fl. Bras. 61; 167. 1860.
Haemadictyon acutifolium var. latifolium Muell.-Arg. in Mart. Fl. Bras. 6^: 167. 1860.
Haemadictyon calignosum Miers, Apoc. S. Am. 260. 1878.
Echites Bangii Rusby, Bull. N. Y. Bot. Gard. 4: 409. 1907.
Echites Hulkiana Pulle, Rec. Trav. Bot. N^erl. 9: 160. 1912.
Echites Laurentiae-disca Rusby, Descr. S. Am. PI. 85. 1920.
Prestonia acutifolia var. latissima Markgraf, Notizbl. Bot. Gart. Berlm 9: 982. 1926.
Fruticose or suffruticose liana; leaves firmly membranaceous, elliptic to oblong-elliptic or ovate-elliptic, 6-16 cm. long, 2-8 cm. broad, acuminate, obtuse or rounded at the base, usually veined with red or purple when young, the petioles 6-20 mm. long; inflorescence racemose, simple, about as long as the subtending leaves or somewhat shorter, bearing 6-40 greenishyellow flowers; pedicels 5-12 mm. long, glabrous or minutely papillate; bracts ovate-lanceolate, 1-2 mm. long, subfoliaceous; calyic-lobes narrowly ovate-lanceolate, acuminate, 1.5-2 mm. long, subfoliaceous, sharply reflexed, minutely papillate to glabrous; corolla salverform, glabrous or minutely papillate externally, the tube 15-20 mm. long, about 4 mm. in diameter at the base, the epistaminal appendages 0.5-2 mm. long, wholly included, the lobes obliquely obovate, 7-10 mm. long; anthers minutely pubescent dorsally, the tips somewhat exserted; nectaries about as long as the ovary or somewhat longer; follicles relatively slender, obscurely and rather distantly moniliform, agglutinated and united at the apex, 20-40 cm. long, glabrous or essentially so.
Type locality: "Barra do Rio Negro" [Manaos, Amazonas, Brazil.]
T^ , T» -„„ . „i^« n..r::ria.ixr AicfriUii+t>r in trnrtipal South America.

Prestonia quinquangularis là một loài thực vật có hoa trong họ La bố ma. Loài này được (Jacq.) Spreng. miêu tả khoa học đầu tiên năm 1824.