PHYTOLACCACEZ. 35 
climbing, with alternate, petiolate, simple, exstipulate leaves.” The 
flowers are united in terminal racemes, which, in consequence of the 
“usurpation ” of the axillary branches, appear lateral or leaf-opposed. 
Each occupies the axil of a bract, and is accompanied by two lateral 
bractlets raised sometimes as far as the calyx. 
Beside Rivina are placed Mohlana and Ledenbergia, which have 
the same gynæceum and an analogous fruit with a more or less 
coriaceous pericarp. But the J/ohs/anas,? plants of both Worlds, 
of which four species’ are known, have four stamens and an irre- 
gular perianth, the anterior leaf being nearly free, while the 
three others are united into a sort of posteriorlip.* Ledendergia,’ of 
which a suffrutescent climbing American 
species’ is the only representative, has 
numerous stamens and a regular tetra- 
merous calyx; but its lobes grow and 
spread themselves round the fruit in a 
large, rotate, tetraphyllous, dry and reti- 
culate indusium. 
Petiveria’ (figs. 51, 52) has also tetra- 
merous apetalous and hermaphrodite 
But the receptacle is concave, 
and the sepals, imbricated and inserted 
upon the edges, are placed two in front 
and two behind. The stamens perigynous 
like the sepals, alternate with them when 
the same in number; but there may be also 
from one to four besides, which are super- 
posed. All are composed of a subulate fila- 
Petiveria alliacea. 
flowers. 

Fra. 51. 
Floriferous branch (2), 

1 Or little developed. 
2 Mart., Nov. Gen. et Spec. Bras., iii. 170.— 
Envu., Gen., n. 5256.—MoQ., Prodr., xiii. sect. 
ii. 15.—Helleria VELLOZ., Fl. Flum., i. t. 122. 
—Mancoa Rarin., Fl. Tell, n. 632 (nec 
WEDD.). 
3 Ruiz et Pav., Fl. Per., i. 65, t. 102 (Rivina). 
—Porr., Dict., vi. 215, n. 5 (Rivina).—Scaum. 
et THONN., Beskr., 84, n. 1.—Hook., Je., t. 130 
(Rivina). 
* They have been divided into two sections, 
according as their fruit is dry, or scarcely fleshy, 
nerve-reticulated, marginate (Hilleria) ; or more 
or less fleshy, without a plexus of nerves and 
without border (Mohlanella). 
5 Ku, in Herb. Karst. (ex Mog., Prodr., xiii. 
sect. li. 14). 
6 L. seguierioides K1.— Rivina seguierioides 
Ku, Found in the Antilles and in neighbouring 
regions of the mainland. 
7 Prum., Gen., 50, t. 39.—L., Gen., n. 459; 
in Act, Holm, (1744), 287, t. 7.—J., Gen., 84.— 
GÆRTN., Fruct., i. 364, t. 75, fig. 2—LamMk., 
Dict., v. 223; Ill, t. 272, 1.—Enpu., Gen, n. 
5250.—PayER, Organog., 302, t. 62.—Moq., 
Prodr., 8. 
D 2 
