595 



Exserted, large, nearly deltoid, finally erect, E. niacrocarpa. 



Exserted, almost awl-shaped-pointed, E. sabnonophloia. 



Wholly exserted. hardly as long as or shorter than the width oi the rim. Deltoid, 

 E. capitellaia. 



Wholly exserted, shorter than the broad rim. E. mac-rorrhyncha. 



Perfectly exserted. Pointed or simply acute. Deltoid-pointed. E. Oldfieldii, 



Conspicuously protruding ; deltoid-semi-lanceolar, E. resinifera. 



High-exserted ; deltoid, E. rostrata. 



High-exserted ; almost deltoid or semi-lanceolar, E. iereticomis. 



The following is '* domed," but not strictly with exsert valves : — ■ 

 Deltoid, E. gornvhocephala. (See also Part XXI, p, 19.) 



Here is another domed rim — 



Deltoid, red. E. erythrocorys. (See also Part XLV, p. 133.) 



There is an amount of variation in the exsertion of valves, which, perhaps, even 

 Mueller did not fully appreciate. 



At the present day botanists find it unnecessary to describe valves with the 

 elaboration employed by Mueller. The characters are, in modern descriptions, used 

 as follows : — 



Sunk, and to what extent; flush with the orifice; if exsert, then to what 

 extent; how many valves (they vary); and. briefly, their shape. 



3a. Enclosed. 



These lists have been mainly compiled from the illustrations in the present work. 



Valves slightly sunk (*at times slightly exsert) — 



E. dccedens. *E. divers if olia. 



*E. acmenioid,es. E. goniocalyx. 



*E. Andrewsi. ■ *E. Guilfoylei. 



*E. Boormani. E. hwmastoma,. 



E. brachyandra. E. Howittiana. 



E. Broicnii. E. intertexta. 



E. cassia. E. Jacksoni. 



E. Cambageana. E. Kruseana. 



*E. Consideniana, E, linearis. 



E, cordakt. E. longifolia, 



*E, crebra. *2?. melanophloia. 



*E. Dawsoni. E> Mitchellimia, 



*E, dmmoohv. E, Muelkriana. 



