446 



The following observations have been translated from Naudin's 1st Memoir, 

 18S3. He grouped thirty-one species cultivated in France and Algiers, according to tile 

 Inflorescence (the principal character) and Fruits, as follows : — 



(a) Flower.-; solitary, axillary, nodding: E. tetraptera. 



(b) Flowers in three-flowered cymes, axillary, sometimes solitary by suppression of two others. 



1. Stamens arranged in four bundles, edge of the calyx quadrilobed (E. eryfhrocorys). 



2. Stamens uniformly distributed; edge (if the calyx-tube truncate, without lobes. Fruits 



large (almost the size of a walnut) : E. Preisxirtitti, E. mvyocarpa, E. globulus. Fruits 

 small (nearly the size of a pea) : E. viminalis. 



(c) Flowers in axillary umbels, ordinarily three-flowered, sometimes five to seven flowered, with long 



peduncles and nodding : E. longifolia. 



(d) Umbels axillary, normally seven-flowered. 



1. Operculum longer than the calyx-tube, stamens straight in the bud : E. occidentalis, 



E. obcordata. 



2. Operculum shorter or about the same length as the calyx-tube, stamens inflected in the 



bud : E. gracilis, E. melliodora, E. Gunnii, E. goniocalyx, E. cocci/era. 



(r) Axillary umbels, often seven-flowered, but the number of flowers may vary from seven to eleven : 

 E. terelicomis, E. leucoxyhn, E. rudix, E. botryoidex, E. diversioolor. 



(/) Axillary umbels pluriflowered, may carry up to twenty-five or more flowers. 



1. Operculum four to five times longer than the calyx-tube, stamens straight in the bud : 



E. cornuta, E. Lehmanni. 



2. Operculum about the same length as the calyx-tube, or shorter than it; stamens inflected 



in the bud : E. robusta, E. diversifolia, E. obliqna, E. amygdalima, E. rostrata, E. Risdoni, 

 E. concolor. 



(n) Inflorescence in panicles or in terminal corymbs by the union of three, five, seven flowered umbels. 



1. Fruits large (size of a medium-sized walnut) : E, cqlophylla. 



2. Fruits small (size of a grain of pepper or of a small pea) : E. polyanthema, E. cinerea. 



In general, when the flowers are very large, they are solitary in the axils of the leaves; when they 

 are of moderate size, they are most often, if not always, in three-flowered cymes. (Mem. I, 354.) 



Then we come to Naudin's 2nd Memoir (1891) :— 



The inflorescence is sometimes axillary, sometimes terminal at the ends of the branches. Rarely 

 the flowers are solitary in the axils of the leaves (E. tetraptera); in the great majority of cases they are 

 united in cymes or umbellules. and generally in odd numbers, and always borne on a common peduncle; 

 they themselves .ire most often pedicellate, seldom entirely sessile. 



One comes to a certain number of eucalypts in which the flowering branch is obliterated at the 

 summit, so that all the umbels or umbellules change into a panicle, sometimes aphyllous, sometimes with 

 leaves for a portion of its length. This method of inflorescence is characteristic of several species (pages 

 11 and 12) ... • 



Classification of species according to the methods of inflorescence, and the modifications of the 

 flower, without taking note of the disposition and of the shape of the leaves (2nd Metn., p. 17): — 



Flowers in Cymes or Axillary Umbels. 



(a) Cymes or three-flowered umbels— 



E. globulus. E. cordala. 



E. viminalis. E. Prrlsxiana . 



/•;. urnigera. E. megacarpa. 



