108 



used in this way A spinosa has accidentally found its way into the 

 colony and is a pestilent weed. The species of Cyathula and Achy- 

 i-anthes are annoying to cattle by their flower heads, which are 

 furnished with numbers of hooked bristles, and in the autumn the 

 tails of these animals may ])e seen to be felted into a solid mass by 

 these seedvessels. Wool is also damaged by them in the localities 

 where these plants are found ; but, fortunately, they are not common 

 in the wool-producing districts Our single species of Gomphrena is 

 an imported plant, and is thought by some persons to be a good 

 pasture herb. 



Number of species under 500. 



(Ex. Imbuya, Isinana. Cook's Comb.) 



Anthers 2-celled. Ovary many-ovuled. Leaves 



alternate. 1 



Anthers 2-celled. Ovary 1-ovuled. Leaves alter- 

 nate or opposite. 2 

 Anthers 1-celled. Ovary 1-ovuled. Leaves opposite. 7 

 1 Stamens without alternating staminodia. Celosia. 

 1 Stamens alternating with long 2-fid staminodia. Hermbstcedtia. 

 2 Lateral flowers abortive, changed into hooked 



bristles. Staminodia present Cyathula. 



2 Lateral flowers abortive, changed into hooked 



bristles Staminodia 0. Puj>alia. 



2 Lateral abortive flowers 0. 3 



3 Stamens free. Fruit splitting across. A^fAKANTUS. 



3 Stamens united in a c III » at base Staminodia 0. 4 



3 Stamens united in a cup at base. Staminodia 



present. 5 



4 Segments of perianth equal, sub-villous, erect. Psilotrichum. 

 4 Segments of perianth unequal, spreading, plumose 



at apex. Tkiohinium. 



5 Stigmas 2. Staminodia triangular, entire. iEuvA. 



Stigma 1, capitate. 6 



♦■' Perianth segments sub-equal, villous. Leaves 



alternate. Sericocoma. 



6 Periantli segments unequal, glabrous. Leaves 



opposite. ACIIYRANTHES. 



7 Stamens united in a siiort cup. Sepals unequal. Aliernanthera. 

 7 Stamens united in a long cup. hepals equal. Gomphrena. 



1 Celosia, Linn. 

 trigyna, Linn. 



2 flermbstcedtia, Heich. 

 caffra, Moq. 



sp. (/. M. Wood, 3989;. 



List of Species. 



AB. 



BC. 

 Z. 



