28 COHESION 
of Botany,’ 1866, p. 168, tab. 47. In Orchids, this 
cohesion of sepals is very often co-existent with other 
more important changes, such as absence of the la- 
bellum, dislocation of the parts of the flower, &c. 
Cohesion of the petals—Linnzus mentions the occur- 
rence of cohesion of the petals in Saponaria.* Moquin 
notices a Rose in which the petals were united 
into a long tube, their upper portions were free and 
bent downwards, forming a sort of irregular limb. An 
instance of the polypetalous regular perianth of 
Olematis viticella being changed into a monopetalous 



Fic. 11.—Gamopetalous flower of Papaver bracteatum. 
irregular one, like the corolla of Labiates, is recorded 
by Jaeger.” There is in cultivation a variety of 
Papaver bracteatwm, in which the petals are united by 
their margins so as to form a large cup. Under 
| «Phil. Bot.,’ § 125. 
2 «Nov. Act. Acad. Nat. Cur.,’ 14, p. 642, t. xxxvii. 
