DEPARTMENT OF BOTANICAL RESEARCH. 



95 



South Australia establishes this as a well-marked condition. Moreover, 

 the feature referred to is not necessarily correlated with an especially 

 small leaf-area. For example, a representative leaf of Heterodendron 

 olecefolium is 110 mm. in length by 14 mm. in width and has an 

 area, one side only, of 1,080 sq. mm. The phyllodia of Acacia ste- 

 nophylla, and which may be regarded as leaves, may be 375 mm. in 

 length and only 5 mm. wide, with a surface area, one side, measuring 

 1,700 sq. mm. A "composite" leaf constructed by averaging the 



Leaf measurements of eremaic and arid perennials of South Australia. 



Species 



Acacia aneura^ (broad form) 



aneura (narrow form) 



brachystachya 



calamifolia 



cambadgei 



coUetioides 



iteaphylla 



kempeana 



linophylla 



oswaldii 



pycnantha 



randelliana 



rigens 



salicina 



sentis 



stenophylla 



tarculiensis 



tetragonophylla 



Dodonsea attenuata 



Eremophila alternifolia 



brownii 



f reelingii 



latrobei 



longif olia 



neglecta 



paisleyi 



Eucalyptus incarnata var. dumosa 



odorata 



oleosa 



leucoxylon var. macrocarpa. . . . 



Fusanus acuminatus 



spicatus 



Geigera parvifiora 



Gravillea stenobotrya 



Hakea leucoptera 



multilineata 



Heterodendron oleaefolium 



Jasminum lineare 



Leptospermum Isevigatum var. ninus 



Melaleuca glomerata 



paroif olia 



uncinata 



Myoporum platyearpum 



Olearia muelleri 



Pholidia scoparia 



1 Phyllodia. 



Length. 



trim. 

 57 

 55 



100 

 67 

 20 

 12 

 88 

 64 



140 

 47 



110 

 70 

 85 

 75 

 31 



375 

 34 

 30 

 85 

 34 

 26 

 55 

 32 

 80 

 46 

 28 

 87 

 75 

 86 

 90 

 72 

 47 

 47 



135 

 72 



210 



110 

 96 

 26 

 20 

 9 

 25 

 67 

 90 

 20 



Width. 



2.5 



1.5 



1 



8 



1 



5 



7 



1.5 



4 

 26 



2 



1.5 



5 



3.5 



5 

 10 



1 



3 



2 



4 



7 



1.5 



5 



5 



2 

 18 

 10 

 18 

 25 



7 

 10 



3.5 



1.5 



2 



6 

 14 



5 



5 



1 



1 



1 



7 



6 



1 



Area. 



sq. mm. 

 350 

 100 

 140 



65 

 140 



12 

 350 

 410 

 210 

 175 

 1,050 

 130 

 120 

 350 

 100 

 1,700 

 300 



30 

 200 



30 

 110 

 230 



32 

 230 

 190 



50 



1,280 



650 



1,000 



1,400 



300 



290 



160 



190 



140 



1,200 



1,080 



450 



95 



18 

 7 



22 

 450 



25 



18 



