572 



Mueller, 1887. — In Mueller's " Key to the System of Victorian Plants," 

 (1887-8), which is a dichotomous arrangement, the fruit is to a very slight extent 

 made use of in running down the species, viz. : — 



1089. — Fruit semiovate .... (hwmastoma). 



Fruit truncate-ovate .... (Skberiana) . 



1092. — Fruit valves wholly exserted .... (macrorrhyncha). 



1093. — Fruit valves wholly enclosed or slightly exserted. 



Fruit truncate-globular, its border depressed .... (eugenioides). 

 Fruit truncate-ovate, its border depressed .... (piperita). 



R. Tate, 1890.—" Handbook of the Flora .... of South Australia." 

 His Key to Eucalyptus (p. 93) combines the use of the fruit as a main character, and 

 the anthers as a subordinate one, with specific differences indicated by the leaves and 

 inflorescence. He deals with only 34 species. 



I. — Fruit cylindrical-ovate, about twice as long as wide. 



II. — Fruit truncate-ovate, longer than wide, base narrowed. (Here follow subdivisions a to d, 

 by anthers.) 



III. — Fruit semi-ovate to semiglobose, about as long as wide, base rounded (a to c, by anthers). 



IV. — Fruit more or less biconic, the dorsal portion hemispheric ; valves exsert; umbels solitary. 



Here follow two subdivisions, mainly also based on the fruits, viz. : — ■ 



(o) Upper portion of fruit obtusely conical, truncate. Anthers kidney-shaped, opening by 

 divergent slits. 



(6) Upper portion of fruit acutely conical, truncate; umbels solitary. Fruits very large. 



Naudin, 1891. — C. Classification of species (grown in France, J.H.M.) accord- 

 ing to the shape and size of the fruits. (Naudin II, 18.) Following is a translation :— 



The fruits of Eucalypts, generally woody and hard, are, as we have already understood, formed 

 by the calyx-tube or receptacle, adnate congenitally with the ovary developed into the capsule. This 

 last is sometimes free in the upper part, and when it sensibly exceeds the calyx-tube it becomes exsert. 

 In a large number of cases it is entirely enclosed in the calyx-tube. Often also it is flush with the margin. 

 It opens either by the straightening of its valves, or by their separation at their base without straightening 

 themselves, and in this latter case it is frequently of a flattened appearance. These diverse modifications, 

 added to the size of the fruit when mature, will furnish us with good distinctive characters. 



The fruits of the Eucalypts vary greatly in size and shape in the series of species. In some their 

 bulk attains almost or even surpasses that of a walnut; in others it is scarcely of the size of a hemp seed. 

 Between these two extremes one finds all intermediates. Let us note the most remarkable under 

 these two headings : — 



Species with large fruits : — ■ 



E. globulus. E. ?negacarpa. 



E. Preissiana. E. cosmophylla. 



E. calophyUa. 



Species with very small fruits : — ■ 



E. crebra. E. amygdalina. 



E. myrtiformis. E. deseriorum. &c. (p. 19). 



E. Andreana. 



