204 SOUTH AFRICAN FLOWERING PLANTS. 



deeply lobed), forming four nutlets in fruit. The style 

 arises from the to'p of the ovary, not from the hasc, as 

 in the Labiates, which have a very similar pistil and 

 fruit. 



Stil'be. — This genus consists of heath-like shrubs 

 (Fig. 81). The calyx is five-parted, with equal lobes, 

 hairy without and valvate in bud. The corolla has five 

 scarcely unequal lobes (II.)- The stamens are four, 

 with a rudiment of the posterior one — not represented 

 in the diagram (II., III., IV.) — and are equal, or very 

 nearly so, in length. 



The pistil has two carpels, the posterior one being 

 abortive, as shown in the diagram (IV.) and (VI.). 



The fruit is a one-seeded capsule, one ovary-cell 

 being empty (VIL). 



The regularity of the outer whorls shows that this 

 flower is indicative of a more ancestral type than those 

 genera with irregular corollas. 



Sela'go (Fig. 82).— This is a large South African 

 genus, having some seventy species, one being called 

 Aarbschje. They consist of herbs or under-shrubs with 

 small leaves, due to drought. The flowers are in heads, 

 or spikes, i.e. sessile along the peduncle, as in the figure 

 (I.). The calyx is cleft more or less deeply. The 

 corolla (11.) is irregular (III. laid open). The four 

 stamens are didynamous (II.). The two anther-cells 

 are fused into one at an early stage (IV.). The pistil 

 has two carpels, the ovary-cells (V.) having one ovule 



