Many SPIRAEA, Z
ROSACEA. 97 3. Bridgwater ; MelvilL Hedges on the slopes of the Blackdown hills. Roadside between Ford and Bromp- ton Ralph. 4. Brympton ; J. Sowerby. Near Chard. 6. Hedges between Chard and Winsham, rather frequent. 7. Hedge near Pen Selwood. 5. Europe and W. Asia. (Azores : Canaries). Will- komm says " Hab. sponte in Ital., Dalmat., Tauria." Koch " ex Oriente allata." England, Ireland. Not in Gloucestershire ? I do not always find it easy to distinguish Prunus Avium from P. Cerasus , and doubt much as to the value of some of the book characters. The under surface of the leaves is said to be pubescent in P. Avium, but glabrous in P. Cerasus. I find it to be much the same in both, viz. thinly hairy. Many continental authors derive a character from the petioles, say- ing of P. Avium "petioles with one or two (large) glands at the top ;" and of P. Cerasus " glands on the petioles none or mounting to the lower teeth of the leaves." I am convinced, however, that no reliance can be placed on this. Perhaps the shape of the adult leaves and the suckers of P. Cerasus afford the best characters. [P. PADUS, L. Alien ; woods, where I suspect it has always been originally planted. May. 9. Brockley Combe ; F. B. C. Clevedon ; W. E. Green. 10. St. Anne's Wood, Brislington ; T. B. Flower (Phyt. I. 68). Leigh Woods ; Swete. Roddenbury Wood, Longleat ; just within the county, probably planted ; H. F. Parsons. Europe ; N. Africa ; N. and W. Asia Himalaya. ; England (northern), Scotland, Ireland. Not in Devon, Dorset, nor Wilts.] II.
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