THE NATURALIST'S CALENDAR 399 



July 14. Aug. 29 Young martins and swallows begin to 

 congregate. 



14 Potato fl. 



1 5 Angelica sylv. fl. 

 15-25 Digitalis ferrugin. fl. 



1 5 Senecio jacobaea (ragwort) fl. 



1 5 Solidago virgaurea (golden rod) fl. 



1 6 Centaurea calcitrapa (star thistle) fl. 



1 6 Oenothera biennis fl. 

 17. Aug. 14 Pease cut. 



17 Galega oflkin. fl. 

 17. Aug. 21 Apricots ripe. 



17 Stachys palustr. fl. 



17 Epilobium ramos (branching willow- 



herb) fl. 



17. Aug. 7 Rye harvest begins. 



1 8. Aug. 15 Chlora perfol. (yellow centaury) fl. 



1 8 Lathyrus aphaca (yellow vetchling) fl. 

 1 8 Circaea lutetiana (enchanter's night- 

 shade) fl. 



1 8 Eupatorium cannabin. (water hemp 



agrimony) fl. 



1 9 Campanula latisol (giant throatwort) fl. 

 19 Euphrasia officin. (eyebright) fl. 



19. Aug. 10 Humulus lupulus (hop) fl. 



19 Poultry moult. 



20 Cuscuta europ. (dodder) fl. 



20 Gentianum centaureum (lesser cen- 



taury) fl. 



20 Sium nodiflorum fl. 



2 1 Spergula arv. (spurrey) fl. 

 2 1 Trifolium arv. fl. 



21 Polygonum fagopyr. (buckwheat) fl. 

 21. Aug. 23 Wheat harvest begins. 



22 Sparganium erect, (great bur-reed) fl. 

 2 2-3 1 Hyper, elodes (marsh St. John's wort) fl. 

 22 Drosera rotundifolium (sundew) fl. 



22 Comarum palustr. (purple marsh cin- 



quefoil) fl. 



