400 Scott Elliot. — On the Fertilisation of South 
Serruria conges ta. 
Fig. 122. Flower from the side. Letters as above, t. barren tips of anthers, f 
their filaments, b. bract, s. sepals. 
Pterygodium alatum. 
Fig. 123. Whole flower from in front. 
Fig. 124. Longitudinal mesial section of flower (enlarged). 
Fig. 125. Left half of lamina and anther seen from behind (enlarged). 
Fig. 126. Disc, anther-case, and stigma from in front (Part of Fig. 123 enlarged). 
gal. Galea, se. anterior sepals, lam. upright part of lamina ending in nectar- 
holes nh ; w. wing or membranous part of labellum, ac. anther-case, d. disc, 
si. stigmatic surface, n. nectary, gr. groove leading to nectary. 
Angraecum superbum. 
Fig. 127. Whole flower from in front, clinandrium removed. 
Fig. 128. Same flower in longitudinal section. 
Fig. 129. Rostellum from exactly in front: flower in same position as last. 
se. sepals, lab. labellum, h. hood in which it ends, sp. spur, cr. crest or 
mesial expansion of labellum, a. pollinium, pit. pit in which pollinia fall, 0. 
groove in which disc d lies, ov. ovary. 
Disperis villosa. 
Fig. 130. Flower from in front, natural size. 
Fig. 1 31. Flower in longitudinal median section (lateral sepals removed). 
Fig. 132. Anther and labellum from above. j 1# posterior sepal or galea, si. 
lateral sepal, p. petals united to galea, /. basal part of labellum, n. nectary on 
upper part of its thickened extremity, cl. case of anther ending in front in spiral 
ribbons, d. attachment of disc at extremity of those ribbons, can. caudicle, c. 
anther. 
Iridaceae. 
PE. external and pi. internal perianth-segment, pt. perianth-tube, co. column of 
filaments, a. anther, si. stigmatic lip, n. scale covering nectar-cup. 
Moraea tristis. 
Fig. 133. Whole flower. 
Fig. 134. Staminal column and style with perianth removed. 
PLATE XXIII. 
Moraea trictispis. 
Fig. 135. Flower with external perianth-segments removed. 
Figs. 136 and 137. External perianth- segment seen from within and in longitu- 
dinal section. 
Moraea angusta. 
Fig. 138. Perianth removed. 
Figs. 139 and 140. External perianth-segment from within and in section. 
Moraea papilionacea. 
Fig. 141. Flower in longitudinal vertical section. 
Moraea tripetala. 
Fig. 142. Flower with one external perianth-segment and style-branch removed. 
Ferraria undulata . 
Fig. 143. Flower in median vertical section. 
Fig. 144. A style-papilla enlarged. Pa. papillae. 
