356 
ILL USTRA TIONS. 
Plate XVI. 
FLOWER AND FRUIT. 
Fig. 107. — Transverse section through fruit of Ricinis communis 
showing seplicidal dehiscence of capsule, the seeds (s) 
being borne on axial placenta?. 
Fig. 108 — Transverse section through fruit of colocynth showing 
seeds (s) borne on parietal placenfte. 
Fig. 109. — Transverse section through fruit of cardamom showing 
loculicidal dehiscence, the seeds, as in Fig. 107, being 
borne on axial placentae. 
Fig. 110. — Longitudinal section through orange flower: tPE), 
flower-stalk ; (S), sepal; (P), petal; stamen with fila- 
ment (f) and anther (a); united pistils with stigma 
(T), style (Y), and superior ovary (O) with ovules; 
(D), Disk. 
Fig. 111. — Longitudinal section through caryophyllus showing 
inferior ovary (O), style (Y), stamen (F), petal (P), 
sepal (S), disk (D). 
Fig. 112. — Ray Hower of arnica: (P), ligulate corolla; (T), bifid 
stigma; (Y), style; (AC), inferior ovary, becoming an 
achene ; (PA), pappus. 
Fig. 113. — Disk flower of arnica: (P), tubular corolla; (A), an- 
thers; (T), bifid stigma; (Y), style; (AC), inferior 
ovary, becoming an achene ; (PA), pappus. 
Fig. 1 13A. — Transverse section through anther of (Enothera biennis 
showing two lobes, each with two pollen sacs, one of 
these being ruptured. 
Fig. 114. — Pollen grain of crocus. 
Fig. 115. — Pollen grain of arnica, with three thin places in the 
wall for the germination of the pollen tube, the 
remainder of the wall with prominent centrifugal 
sculpturing. 
Fig. 1 16 — Pollen grain of lavender showing six thin places in the 
wall for the germination of the pollen tube, the 
remainder of the wall being finely sculptured. 
Fig. 1 17. — Overlapping hairs of pappus of arnica. 
Fig. 1 18.— Superior dry drupe of cubeb with remnant of style at 
apex, a long stalk and orthotropous seed. 
Fig. 1 19.— Inferior dry drupe of pimenta with remains of five calyx 
teeth at the apex and two cells each containing a seed. 
