570 Dr. Smitn’s Account of Brunonia. 
too confidently perbaps asserted for natural, may it not on the 
other hand guide us to some natural combinations,.in helping us, 
for instance, to understand Corymbium? ‘These anomalous pro- 
ductions, while they perplex the system-builder, enlighten the 
true observer. Who knows but the difference between an up- 
right and a reversed embryo, which, according to our present 
knowledge, I allow to be almost insuperable, and by which rule 
Brunonia must be referred to the Corymbifere, and not to the 
Dipsacee, may prove, like every other known character, liable 
too ccasional exception ? 
I... SML. 
EXPLANATION OF THE PLATES. 
Tas. XXVIII. Brunonia australis. 
. Fig. 1. Planta magnitudine naturali. 2. Flos completus magn. 
auctus. 3. Calyx exterior cum bracteá respondente capituli. 
4. Corolla cum dimidio calycis interioris. 5. Pistillum et Sta- 
mina, quorum tubus antherarum apertus. 6. Stigma dimidio 
indusii abscisso. Apex styli cum indusio stigmatis. 
Tas. XXIX. BnvuNowNia sericea. 
Fig.1. Planta magnitudine naturali. 2. Capituli lobus magn. 
auctus. 3. Flos completus. 4. Calyx exterior cum bracteá re- 
spondente capituli. 5. Stamina et Pistillum, cujus Stigma lon- 
gitudine indusii. 6. Stamen unicum. 7. Pistillum, cujus stigma 
semiexsertum. 8 Apex Styli cum indusio stigmate adhuc in- 
cluso. 9. Stigma denudatum. 10. Calyx interior fructifer. 
11. Tubus ejusdem apertus, ostendens semen filamentis infrà 
coharentibus cinctum. 12. Semen filamentis persistentibus 
cinctum. 13. Apex incrassatus operculiformis tunice exterioris 
seminis. 14. Semen tunica exteriore orbatum. 15. Embryo. 
XVIII. 4 De- 
