ODOURS OF FLOWERS 



89 



indica, Centaurea Cyanus ; and to the latter Vitis vinifera, Reseda odorata, &c. On 

 the other hand, cases are not rare in which bright colouring is associated with strong 

 odour, as in many roses, syringas, pinks, stocks, and generally in many cultivated 

 plants that for this very reason are grown in gardens. 



Delpino in 1873 ('Ult.oss.,' Atti Soc. ital. sc. nat., Milano, xvi, 1874) attempted a 

 Classificaiiori of the odours of flowers. He distinguished two great groups, the Synn- 

 pathic and the Idiopathic, which he arranged in five classes according to the following 

 scheme : 



Classes of 

 Sympathic. Idiopathic. 



5. 



6 

 4 

 6 

 3. 

 6 



1 

 6 



X 

 6 



1. 

 6 

 2 

 6 

 3. 

 6 

 4 

 6 

 5. 

 6 



Sweet odours 



Aromatic , 



Fruity , 



Unpleasant 1 Idiopathic 



Nauseous J Odours. 



I Sympathic 

 I Odours. 



Delpino describes as sympathic odours, those that are more or less agreeable to 

 a large number of insects (bees, wasps, flies, beetles) and also to man. He applies 

 the term idiopathic to odours that are sympathic to only a few animals, but that on 

 the contrary are antipathic to a large number. 



A. Sympathic Odours (Odori simpatici). 

 Class I: Sweet Odours (Odori suavi). 



1 . fessamine-odoiir (Odore gelsominaceo) : Jasminum grandiflorum, sp. of Gar- 

 denia, Heliotropium europaeum, Coffea arabica, Solanum bonariense, Passiflora 

 quadrangularis, and others. 



2. Narcissus-odour (Odore narcissmo) : Narcissus Jonquilla, viridiflorus, Tazetta, 

 and others ; Ornithogalum longebracteatum, Reseda alba, Hemerocallis flava, Helio- 

 tropium grandiflorum, and others. 



3. Mignonette-odour (Odore resedino) : Reseda odorata, and others, 



4. Hyacinth-odour (Odore giacintino) : Hyacinthus orientalis, Lunaria rediviva. 



5. Lily-odour (Odore liliaceo) : Lilium candidum, Convallaria majalis, Asperula 

 odorata, Crinum asiaticum and other species, Lonicera Caprifolium. 



6. Nuphar-odour (Odore nufarino) : Nuphar luteum, Phoenix dactylifera, 

 ? Nymphaea alba. 



7. Spartiu?n-odour (Odore spartino) : Spartium junceum, Vanda insignis. 



8. Violet-odour (Odore violaceo) : Viola odorata, Rondeletia odorata, Cheiran- 

 thus Cheiri. 



9. Honey-and-wax-odour (Odore melleo e cereo) : Symphytum officinale, tubero- 

 sum, orientale ; sp, of Acer, Galium verum, Herminium Monorchis, Haematoxylon 

 campechianum, Apocynum adrosaemifolium. 



10. Hawthorn-odour (Odore crategino) : Crataegus oxyacantha, Sorbus Aucu- 

 paria, Ornithogalum arabicum, Allium neapolitanum, sp. of Spiraea, Cimicifuga race- 

 mosa, Cornus sanguinea, Ailanthus glandulosa Sisymbrium pinnatifidum, Tamarix 



