101 



Some authors say that there are only one to two or three fertile seeds in a cell. 

 The vast majority of what appear to be ' : seeds " in commercial seeds are sterile ones, 

 usually brighter coloured and much smaller than the fertile ones. 



Dr. C. Hall points out (Proc. Linn. Soc, N.S.W., XXXIX, 517) that the shape 

 and size of the seed are largely determined, when an endosperm is absent, by the size, 

 shape, and manner of folding of the cotyledons. Moreover, the Bloodwoods 

 (Corynibosse) have one fertile seed in each cell, with a few sterile ones. The occurrence 

 of the single fertile seed permits of the development of the winged appendage of the 

 testa many members of this group possess, and which is impossible in the smaller fruits, 

 with closely packed seeds, of the majority of the Eucalypts. 



In " Eucalyptographia,"' under E. megacarpa, are some measurements of both 

 fertile and sterile seeds of twenty-eight species made by Mr. J. G. Luehmann. Those 

 of a large number remain to be done, as they were not available. 



The following are the approximate measurements of the fertile seeds of 198 

 species as determined by Mr. W. F. Blakely, my assistant : — 



E. dealbata. 



Not exceeding 1 mm. long. 



i-lbyf 



mm. 



E. exserta, 1 by f-f mm. 



E. propinqua, 1 by f mm. 



E. redunca, 1 by 1 mm. 

 E. Kruseana, 1 by |— 1 mm. E. rudis, 1 by § mm. 



E. odorata var. calcicultrix, f-1 by f-1 mm. E. Studleyensis, 1 by f-1 mm. 

 E. Parramattensis, 1 by f-f mm. E. tereticomis', 1 by f-1 mm. 



Less than 2 mm. long 

 E. amygdalina, 1-1 f by 1 mm. 

 E. aggregata, 1-1 J by -J— 1 mm. 

 E. astringens, If by 1 mm. 



E. Behriana, |-1t by f- mm. 



E. bicolor, 1-lf by 1 mm. 



E. Bosistoana, \-\\ by 1-lj mm. 



E. Caleyi, 1-lf by 1 mm. 



E. crebra, 1-lf by 1 mm. 



E. Dawsoni, 1-lf by 1 mm. 



E. Deanei, 1-1|- by f-1 mm. 



E. decipiens, 1-1 f by 1 mm. 



E. erythronema, 1-1^ by 1 mm. 



E. eugenioides, 1-lf by 1 mm. 



E.fcecunda, f-1 J by 1 mm. 



E. gracilis. 1-1 J by 1 mm. 



E. Gunnii, 1-1 f by 1 mm. 



E. leptophylla, 1-1 \ by 1 mm. 



E. leucoxylon, 1-lf by If mm. 



E. longifolia, 1-1 f by \-l mm. 



E. longifolia var. multiflora, 1-lJ by 



\-\ mm. 

 E. melliodora, 1-lf by f-1 mm. 

 E. microcarpa, \-\\ by \-\ mm. 

 D 



E. Morrisii, 1-1 \ by \-\ mm. 



E. neglecla, f-1 J by -|-f mm. 



E. notabilis, 1-1 J- by 1 mm. 



E. odorata. f-1 \ by f-1 mm. 



E. ovata var. camphor a, 1-1 \ by f-1 mm. 



E. parvifolia, 1-1|- by 1 mm. 



E. platypus, 1| by 1 mm. 



E. polyantliemos, 1-lJ by 1 mm. 



E. populifolia, 1-lJ by 1 mm. 



E. rariflora, 1-lf by f-1 mm. 



E. Raveretiana, 1-lf byf-f mm. 



E. resinifera, 1-lf by 1 mm. 



E. rostrata, 1-lf by f-1 mm. 



E. salmonophloia, 1-lf by f-f mm. 



E. salubris, 1-1^ by 1 mm. 



E. scoparia, 1-lf by 1 mm. 



E. siderophloia, 1-lf by 1 mm. 



E. siderophloia var. glauca, 1-lf by 



1 mm. 

 E. sideroxylon, 1-lf by 1 mm. 

 E. vitrea, 1-lf by 1-lf mm. 

 E. Websteriana, 1-1 \ by f mm. 



