216 



OPENING OF THE PASSAGE TO THE INTERIOR OF THE FLOWER. 



8 A.M. 



Anagallis arvensis open. 



Dianthus prolifer 



Hieracium A uricula 



8-10 A.M. 

 Taraxacum officinale shut. 



9 A.M. 



Calendula arvensis open. 



Hieracium chondrilloides... 



9-10 A.M. 



Arenaria rubra 



Mesembryanthemum crystal- 



linum 



Tragopogon pratense shut. 



10 A.M. 



Cichorium Intybus 



Lactuca sativa 



Rhagadiolus edulis 



Sonchus arvensis 



10-11 A.M. 



Mesembryanthemum nodi- 

 Jlorum open. 



11 A.M. 

 Crepis alpina shut. 



11-12 A.M. 

 Sonchus oleraceus shut. 



NOON. 



Calendula arvensis 



Sonchus Lapponicus 



1 P.M. 



Dianthus prolifer 



Hieracium chondrilloides... 



1-2 P.M. 

 Crepis rubra 



2 P.M. 



Hieracium Auricula 



Hieracium murorum 



Mesembryanthemum barbatum 



2-3 P.M. 

 Arenaria rubra 



2-4 P.M. 



Mesembryanthemum crystal- 

 linum 



3 P.M. 



Leontodon hastile 



Mesembryanthemum lingui- 



forme 



Mesembryanthemum nodifto- 

 rum ... 



3-4 P.M. 



Anthericum ramosum shut. 



Calendula pluvialis 



Hieracium Pilosella .. 



4 P.M. 

 Alyssum utriculatum 



4-5 P.M. 

 Hyporioeris maculata 



5 P.M. 



Hieracium umbellatum 



Nyctago hortensis open. 



Nymphcea alba shut. 



6 P.M. 

 Geranium triste open. 



7 P.M. 



Papaver nudicaule sh ut. 



7-8 P.M. 

 Hemerocallis fulva 



9-10 P.M. 



Cactus grandifiorus open. 



Silene noctiflora 



MIDNIGHT. 

 Cactus grandiflorus shut. 



To the above clock, adapted to the latitude of Upsala, I append a second, based 

 on long-continued observations at Innsbruck (47 north lat.), 13 south of Upsala. 



Isopyrum thalictroides ( April)op'n 



Lactuca sativa (Aug.) ,, 



Lactuca Scariola (Sept.) 



Mamillariaglochidiata( Aug.) 



Nymphcea alba (Aug.) 



Ornithogalum Narbonense 



(July) 



Oxalis lasiandra (Aug.) 



Veronica Persica (June) 



9-10 A.M. 



Anagallis arvensis (July)... 

 Anemone Hepatica (April).. 

 Anemone nemorosa (April).. 

 Calendula ojficinalis (Sept.) 

 Colchicum antumnale(Sept.) 



Crepis pulchra (July) shut. 



Crocus aureus (March) open. 



Draba verna (March) 



Eranthis hiemalis (March).. 

 Eschscholtzia Californica 



(June) 



Gallasia villosa (July) shut. 



Oxalis Acetosella (April). ... open. 



Tulipa syl vestris (May) 



Tussilago Far far a (April) . . 

 Veronica Chamcedrys (Ma y) 



