DE«CJlIPTION OF THE PLATES. 
Fig, 24, a seed. Fig. 25, a longitudinal section of the same, showing the position of the 
embryo in the albumen. Fig. 26, the embryo removed : all nat. size. Fig. 27, the em- 
bryo, seen in front. Fig. 28, the same, seen sideways : both magnified. 
Plate 73. — Buesinopetaltjm. 
A. Part of a branch of Bcesinopetaltjm iiACEOPHYLLUM in fruit. 
Fig. 1, a flowering panicle. Fig. 2, a single flower: both nat. size. Fig. 3, two of the 
petals. Fig. 4, a stamen : both magnified. Fig. 5, the stamens shown in different posi- 
tions, more magnified. Fig. 6, the calyx. Fig. 7, longitudinal section of a flower, show- 
ing the positions of the petals, stamens, and ovary. Fig. 8, a longitudinal section of the 
ovary, showing it to be more than half superior ; all magnijled. Fig. 9, the style and 
stigma, more magnijled. 
B. Part of a fructiferous branch of Bursixopetaltjm arboeeum. 
Fig. 10, a fruit, nat. size. Figs. 11 & 12, a transverse section of the same. Fig. 13, a 
seed, showing how it is moulded round the placenta, as in Villaresia. Fig. 14, a trans- 
verse section of the same. Fig. 15, a longitudinal section of the same, showing the 
embryo imbedded in albumen, as in Villaresia : all nat. size. Fig. 16, the embryo, 
magnified. 
Plate 74. — Goupia glabra. 
Fig. 1, a flower, nat. size. Fig. 2, a flower in bud. Fig. 3, the petals with their apex 
inflected. Fig. 4, a flower after expansion : all equally magnified. Fig. 5, a flower with 
half of the calyx and of the disk cut away and the petals removed, to show the insertion 
of the stamens inside the large cup-shaped disk and round the ovary. Fig. 6, the sta- 
mens, seen placed inside the large cup-shaped disk. Fig. 7, the stamens, seen in different 
positions, showing the tuft of long hairs on the summit of the connective : all magnified. 
Fig. 8, two of the hairs, more magnified. Fig. 9, the ovary with its five styles. Fig. 10, 
a longitudinal section of the same, showing the insertion of the ovules. Fig. 11, a trans- 
verse section of the same : all magnijled. Fig. 12, a drupaceous fruit. Fig. 13, a trans- 
verse section of the same. Fig. 14, a seed : all nat. size. Fig. 15, a seed covered by its 
fleshy arilline, showing the position of the hHum and raphe. Fig. 16, the testaceous 
second integument, crowned by the chalaza. Fig. 17, the albumen, covered by the third 
thin integument. Fig. 18, the embryo, imbedded in albumen. Fig. 19, the embryo, seen 
in front. Fig. 20, the same, seen sideways : all equally magnified. 
Plate 75. — Ephedra. 
A. Portion of a plant of Ephedra Chilensis. 
Fig. 1, a pair of opposite leaves combined into a vaginant sheath, nat. size. Fig. 2, the 
same, magnified. Fig. 3, the same where the sheath is ruptured by the growth of the 
stem. Fig. 4, a male spikelet, nat. size. Fig. 5, the same, magnified. 
B. Portions of male and female plants of Ephedra bracteata. 
Fig. 1, a pair of connate leaflets, nat. size. Fig. 2, the same, magnified. Fig. 3, the 
