Plate G. 



i. Thelymitra aristata, natural size. Fig. 1. — Side view of column (enlarged); ap, hair-tufts : h hood: 

 Fig. 2.— Front view of column (enlarged) Fig 3. — Back view of column (enlarged) 



u. Microtis porrifolia, a flower (front view) enlarged ; cal., a callus near the tip of labellum, 2 more are seen 

 at the base. Fig. 4. — Front view of column (enlarged) ; e, auricle. Fig. 5. — Side view of flower 

 (enlarged). 



iii. Prasophyllum odoratum, spike and leaf nat. size. Fig 6.— Side view labellum (enlarged). Fig 7 —Front 

 view labellum (enlarged) ; m.p I., membranous part ; c.p.l , callous part Fig. 8.— Column from back 

 (enlarged) ; ap, lateral appendages ; c.d., caudicle. Fig 9.— Column from side (enlarged.) 



