320 



E. aocedenSi 

 E. Caleyi. 

 A', capitellata. 

 E. coriacea. 

 E. decipiens. 

 E. dumosa. 

 A'. Forrestiana-. 

 /•;. Griffithsii. 



/•;. man. 



E. leptopoda. 



E. Mooreana. 



E. Mundijongensis. 



E. Ewartiana. 

 E. Fodschiana. 

 E. perfoliata. 



Thick. 



E. obtusiflora. 



/•;. Oldfieldi. 



E. pachyphylla. 



E. platypus. 



E. Preissiana. 



E. pruinosa. 



E. redunca. 



E. siderophloia. 



E. Le Souefii. 



E. striaticalyx. 



E. Wood tea rdi. 



Very Thick. 



E. Preissiana (almost the thickest 



known to me). 

 E. tetraptera (the thickest known to me). 



Vestiture (Glands and Hairs). 



Bentham ("Flora Australiensis ") seems to have almost ignored hairiness in 

 the leaves. He does not mention it in the introduction to the genus, at p. 185, B.FL, 

 iii, and apparently he only mentions it in the case of E. peltata at p. 254. He apparently 

 looked upon hairs as being so early deciduous ,as not to be worth while mentioning in 

 descriptions. 



Mueller (" Hucalyptographia "), in defining the genus, says, " Branchlets . . . 

 quite glabrous or sometimes those of juvenile plants rough-hairy or rarely so those of 

 advanced plants: leaves of aged plants nearly always glabrous . . . and never 

 soft-hairy . . ." 



It is my intention to revert to the matter when I deal with the question of 

 Seedlings, one of the most important phases of the whole subject. 



In the juvenile tate, many of the species have the stem and the leaves coveted with little glandular 

 Iwi i r- . which make them rough to the touch and give them a dull appearance (li. cortnUa, Lehmanni, 

 Planclioniana &c), but this hairiness is mostly very transitory. Sometimes it is replaced by simple 

 asperities, for example in E. cocci/era, which even to its second or third year is covered with projecting 

 glandules, which may be regarded as the foundation of aborted hairs. On passing to the adult stage it 

 rids it .'-If of this vestiture, and becomes entirely glabrous. (Naudin, 1st Mem., 348.) 



As to their vestiture, the leaves of Eucalyptus are almost always very glabrous ; however, in some, 

 those which ucceed the cotyledons are covered with very short hair, like the young stem, which is then 

 covered with little asperities. We know, however, one species, E. selosa, in which the upper branches, the 



flowers and tin- fruit are hairy, bul it is perhaps the only except ion in tin- genus. (Naudin. 2nd Mem.. 10.) 



Solederer, i. '■'>'>'■',. .it fig. 77. shows secretory cavity in an emergence of the leaf 

 of /;. rilriodora. (After Lignier.) 



