566 



In taking cognisance of the characters of the capsule, we may establish the following divisions in 

 the genus Eucalyptus : — 



I. Valves of the capsule adherent by the summit to the persistent base of the style. Examples : 

 E. Lehmanni, E. cornuta, E. robusta. 



II. The thick valves convergent and adherent to the partition. Capsule opening by a slifc iu the 

 form of a star, by the contraction of the original contiguous valves. Examples : E. globulus, E. megacarpa. 



III. The free membranous valves stand erect; the cells are widely open. Examples ; E. rostrata, 

 E. tereticomis, E. resinifera, E. rudis, E. macrorrhyncM, E. Gunnii, E. Stuartiana, &c. 



IV. The valves decay, either partly or wholly, the dead united portions falling in the shape of an 

 operculum. Examples : E. Rameliana (Trabuti), E. calophyUa, E. oppositifolia, E. populifolio, E. omdentalis, 

 E. botryoides, E. obHqvn, &c. 



Depth of the Capsule. 



Tins is another way of implying that the valves are enclosed. 



The depth of the capsule within the encasing calyx-tube is referred to chiefly 

 by Bentham. Thus, in the sub-series Robustse he speaks of " capsule sunk " ; Cornutse 

 " not much sunk " ; Sub-exsertse, " level or slightly sunk." He refers to the capsule in 

 almost every description of a species, as follows :— 



(In most cases the depression (if any) of the capsule can be seen by the figures 

 of the fruits of each species in the present work. We now come to consideration of the 

 valves, and it is obvious that Avhere the capsule is sunk so are the valves.) 

 Not sunk. — 



E. exserta. E. Risdoni. 



E. leptopoda, E. rostrata. 



E, pachyloma. E. tereticomis. 



E. palluMfolia. E. viminalis. 



Not depressed. — ■ 



E, Eehmanni. 

 On a level with rim. — ■ 



E. angustissima. E. mntaUfolia. 



Nearly level with rim — 



E. globulus. E. platyphjUa, 



E. melanophloia. 



On a level with the rim, or slightly sunk.— 



E. Stuartiana. 

 Level with the rim, or more or less depressed.— 



E. erythronema (conoidea). 

 Somewhat depressed in the centre.— 



E. Oldfieldii. 

 Depressed in the centre,-— 



E. erythrocorys. 



