ON SOUTH-AMERICAN APOCYNACER. 127 
ing to a diameter of more than 2 in.; stamens inserted in a pilose ring in the constric- 
tion of the tube; anthers 4 lines long, connivent, pilose with long white hairs behind 
and on the margins; disk of 5 subconnate lobes denticulate at the apex, longer than 
the 2 enclosed ovaries; styles free near their base, connate above; follicles 5 in. long, 
lj in. broad, tapering towards the summit; seeds, upwards of 100, linear oblong, 
13 in. long in an unripe state. 
2. ODONTADENIA GRANDIFLORA, nob.: Odontadenia speciosa, Müll. (in parte) 7, c. p. 117: Hemadictyon 
grandiflorum, A. DC. (non Griseb.) l. c. p. 426: Echites grandiflora, Mey. Esseq. p. 131: Echites 
insignis, Spr. Syst. i. 632: Echites Meyeriana, R. & Sch.: Echites macrantha, R. & Sch. Syst. iv. 
793. In Guiana, Para et Panama: v. pl. s. et fruct. in herb. Mus. Brit. Panama (Hayes, in flore), 
ins. Mechiana, Pará (J. G. Smith, fruct. solus). 
A climbing species, with terete, smooth branches, having axils 14-2 in. apart; oppo- 
site leaves, broadly obovate, shortly narrowing at the base, obtuse at the apex, very 
glabrous, entire, with prominent nerves, and handsomely reticulated veins, 6 in. long, 
4-5 in. broad, on petioles 11 lines long; panicle axillary, branched, shorter than the 
leaves, many-flowered, pedicels spreading, 3-bracteolate at the base, each supporting a 
single large flower; sepals roundly ovate, imbricated, 2 exterior somewhat larger; 
corolla 3 in. long, yellowish red; tube cylindrical, shortly swollen at the base below the 
constriction, and there obsoletely pentagonous, campanular above; segments obtusely 
oblong, spreading; stamens seated at the contraction of the tube, filaments very short, 
channelled ; anthers linear lanceolate, connivent, sagittately 2-lobed at the base, glabrous 
behind, with a small tuft of hairs in the front, at the insertion of the filament; disk of 
5 compressed dentate lobes, confluent at the base, enclosing 2 ovate ovaries; style 
shortish, bipartite at the base; clavuncle oblong, pentagonous, with a peltate membrane at 
the base; stigmata 2, short and distinct; follicle (I saw only a loose one) 6 in. long, 14 in. 
broad, opening by a ventral suture; pericarp thickish, coriaceous; placentas 2, distinct, 
submembranaceous, 6 lines broad, studded closely with cicatrices, denoting the points of 
attachment of the seeds; seeds very numerous, linearly terete, subincurved, erect, with a 
basal hilum, 21-3 in. long, 24 lines thick, obtusely pointed at the apex ; testa rugulous, sub- 
coriaceous, formed of fine transverse crystalline cells, showing on one side along its entire 
length, a narrow raphe containing many white spiral threads ; inner integument thin 
and membranaceous, covering a thin pergameneous albumen 24 in. long; the embryo 
13 in. long, has 2 flat linear cotyledons 18 lines long, 1 line broad, with a basal slender 
terete radicle 3 lines long. a peces : 
"This species, confounded with the preceding, is readily distinguished from it by 
having leaves twice as broad, obtuse (not acuminate) at poe fg by its petioles of 
twice the length, by its much larger corolla, and other particulars. 
A DE ech it, am an diia of its flower, fruit, and seeds, are given in Plate cg 
Where the seeds in figs. 10 and 11 are thicker than they ought to be; in fig. 9 this is 
better shown. 
é : | i in. Sel. p. 166 ; 
3. ODONTADENIA FORMOSA, nob.: Odentadenia grandiflora, Miq. dion Mey.) Stirp. Surin E di : 
Walp. Ann. iii. 35: ramulis pallidis, opacis, striolatis ; foliis elliptico-oblongis, imo a medio cunea- 
