92 SOUTH AFRICAN BOTANY 
the plant ends in a single flower, e.g. Tulip, the flower 
is said to be SoniTaRy, and TERMINAL. If the flowers 
are developed singly in the axils of ordinary foliage 
leaves they are said to be SoniTaARy and AXILLARY. 
Usually, however, the flowers are borne in clusters. 
According to the relative development of the main 
and lateral axis we divide inflorescences into two classes : 
(1) Racmmoss or INDEFINITE inflorescences, in which 
the main axis has indefinite powers of growth and con- 
tinues to give off lateral branches which bear the flowers ; 
and (2) Cymosg or DEFINITE inflorescences in which 
the primary axis ends in a flower and growth is con- 
tinued by a lateral branch. 
60. Racemose Inflorescences.—According to the differ- 
ent development of the lateral axis we divide racemose 
inflorescences into the following kinds :— 
(1) Raceme.—Stalked flowers borne on an elongated 
main axis or peduncle (fig. 53 A), e.g. Foxglove. 
(2) Spike.—Sessile flowers borne on an elongated 
main axis (fig. 53 8B). If the axis is thickened and suc- 
culent the spike is called a Spapix, e.g. Arum Lily. If 
the spike is deciduous and bears unisexual flowers it is 
called a CATKIN or AMENTUM, e.g. Willow. 
(3) Umbel.—Main axis shortened so that flowers 
(which are stalked) seem to come off from the same 
level (fig. 53 c), e.g. Cherry. 
(4) Capitulum—The main axis shortened and 
flattened and sessile flowers borne on this head (fig. 53 p) 
e.g. Sunflower. 
(5) Panicle—A compound raceme, the main axis 
bearing racemes laterally, e.g. Oats. 
