32 ON SOUTH-AMERICAN APOCYNACEZ. 
nearly as long, obtusely linear, oblong erect, simply convoluted in estiva- 
tion, in the form of a spire; branches fistulous; leaves large, rigid, with a 
PEGE VOE < < Lane. dao, ste ta we RAMO ROA: 
e. Disk of 5 free erect emarginated lobes partly adhering by their margins. 
9. Calyx of 5 large, oblong, membranaceous sepals, having within at their base a 
corona of many series of scales; corolla large, with a broad funnel-shaped 
tube; stamens inserted in the middle of the tube . . . . . . . . . Stemmadenia. 
f. Disk of 5 very small free lobes. 
10. Tube of corolla cylindrical, stoutish, slightly constricted below the middle, 
segments spathulately oblong, nearly as long as the tube, quite deflected, half 
introflected in «stivation ; follicles subglobose, stipitated, and more or less 
retrorsely apiculated p CORA. 2394 OR Mertzadema, 
B. Zstivation of corolla dextrorse. 
g. Disk none, or subobsolete ; leaves opposite. 
11. Tube of corolla slender, cylindrical, a little swollen below the constricted 
mouth, segments oblong, gibbous, elongated, with the estivation of Bona- 
fousia; stamens included in the swollen portion of the tube . . . . . Anartia. 
h. Disk pilose, concealing the ovaries; leaves alternate. 
12. Tube of corolla cylindrical, swollen below the mouth; stamens inserted in 
the middle of the tube; follicles oblong, pointed, Së smooth, sub- 
A 0 059. o 1€ aa ee 2 A ^. fesi Diren A MUM, 
To this tribe may be referred the following genera belonging to the Old World :— 
Piptolena, A. DC. Prodr. viii. p. 357, S. Africa. 
Orchipeda, = ,, F p. 358, Java. 
Voacanga, p ee p. 357, Madagascar. 
Urceola, d b p. 358, Sumatra. 
_ Roupelia, Hook. Niger Flora, p. 449, Africa. 
PESCHIERA. 
This valid genus, established by Prof. De Candolle in 1844, was reduced, in 1860, to a 
mere section of Tabernemontana by Dr. Müller, who did not rightly observe its chief ` 
and constant peculiarities. It is readily distinguished from Zabernemontana, Taberna, | 
and Bonafousia by the slender tube of the corolla, always broader at its base, and there 
staminigerous, by the absence of a disk, by its ovaries free to their base, by its short 
style, and especially by its muricated or granular follicles. There is another peculiarity 
first noticed by me in 1836, when I was fortunately able to examine the fruit in a living | 
state: the densely echinated follicle bursts along the convex ventral suture, gaping ` 
widely to allow the escape of its several seeds, which fall out suspended from the sutural ` 
placentee by a thick, soft, eoloured funicle of more than double their length, which at its — 
lower end is attached to the hilum of the seed, placed in the middle of its deeply 
channelled ventral face, by which means the seeds remain suspended in the air. This 
6 
