m] OF ANTHOCYANINS 43 



Cornaceae, Ericaceae and Epacridaceae subepidermal. In Primu- 

 laceae in ground tissue only except in Androsace and Cyclamen where 

 it is epidermal. 



Oleaceae. Usually subepidermal but in spring leaves of Forsythia, 

 Syringa, Chionanthus, Jasminum in epidermis. 



Gentianaceae. Epidermal except in Menyanthes. 



Apocynaceae, Asclepiadaceae and Convolvulaceae. Subepidermal, 

 but in Cuscuta often epidermal. 



Boraginaceae. Altogether in ground tissue except in Sympliyium. 



Labiatae. Marked epidermal localisation. Subepidermal in certain 

 Coleus varieties, and in autumnal leaves of Prunella vulgaris, Ballota 

 nigra, Betonica officinalis, Lycopus europaeus. 



Solanaceae. Subepidermal. 



Scrophulariaceae. Subepidermal in Verbascum, Linaria, Nemesia, 

 Limosella, or epidermal in Pentstemon, Veronica, Digitalis, Euphrasia, 

 Odontites, Rhinanfhus, Pedicularis, Melampynun. 



Bignoniaceae and Orobanchaceae. Epidermal. 



Gesneriaceae. Chiefly epidermal but often also hypodermal and in 

 the spongy parenchyma. 



Lentibulariaceae. Epidermal in Pinguicula. 



Acanthaceae. Varying localisation, usually epidermal. 



Plantaginaceae. Epidermal. 



Rubiaceae. Mesophyll in most cases. 



Caprifoliaceae. Subepidermal except in Sambucus racemosa and 

 S. Ebulus. 



Valerianaceae, Dipsaceae and Campanulaceae. In peripheral ground 

 parenchyma. 



Compositae. Both epidermal and subepidermal localisation. In 

 older leaves nearly always the latter. In younger, subepidermal in 

 Solidago, Achillea, Matricaria, Centaurea, Leontodon, Taraxacum, Trago- 

 pogon and Scorzonera. Anthocyanin in hairs in Hebeclinium janthinum, 

 Eupatorium atrombens and Gynura aurantiaca. 



