216 



OPENING OF THE PASSAGE TO THE INTERIOR OF THE FLOWER. 



8 A.M. 



Anagallu arvensis open. 



Dianthiis 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 Intyhus „ 



Lactuca sativa „ 



Rhagadiolus edulis „ 



Sonchus arvensis , 



10-11 A.M. 



Mesembryanthemum nodi- 

 florum 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 nodiflo- 

 rum „ 



3-4 P.M. 



Anthericum ramosum shut. 



Calendula pluvialis „ 



Hieracium PUosella „ 



4 P.M. 

 Alyssum utriculatum „ 



4-5 P.M. 

 Hypochceris maculata „ 



5 P.M. 



Hieracium umbellatum „ 



Nyctago hortensis open. 



Nymphcea alba shut. 



6 P.M. 

 Oeranium triste open. 



7 P.M. 



Papaver nudicaule shut 



7-8 P.M. 

 Hemerocallis fulva „ 



9-10 P.M. 



Cactus grandiflorus open. 



Silene noctiftora „ 



Midnight. 

 Cactus grandiflorus shut 



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

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



Isopyrumthalictroides{ATpn!i)a^''n 



Lactuca sativa (Aug.) „ 



Lactuca Scariola (Sept.).... „ 

 Mamillaria glochidiata{ Aag.) „ 



Nymphcea alba (Aug.) „ 



Ornithogalum Narbonense 



(July) „ 



Oxalis lasiandra (Aug.) „ 



Veronica Persica (June).... „ 



4-5 A.M. 

 Rosa arvensis (June) open. 



5-6 A.M. 



Rosa nibiginosa (June) „ 



Solanum nigrum (July) „ 



6-7 A.M. 



Anoda hastata (July) „ 



Cichorium Intybus (July)... „ 



Crepis pulchra (July) „ 



Dianthus neglecius(J\ily).. . „ 



Ocdlasia villosa (July) „ 



Hieracium amplexicaule 



(July) „ 



Hieracium aurantiaeum 



(July) „ 



Lactuca perennis (August).. „ 



Lampsana communis (July) „ 



Linum grandiflorum (July) „ 



Linum viscosum (July) „ 



Mulgedium Plumieri (July) „ 



Ranunculus acer (July) „ 



Solanum tuberosum (July).. „ 



Sonchus oleraceus (June) ... „ 



Taraxacum officinale (June) „ 



Tragopogon floccosus (July) „ 



Tragopogonorientalis{Julj) „ 



7-8 A.M. 

 Campanula TracheUum{J uly)o^'n 



Carlina acaulis (August)... „ 



Carlina vulgaris (August).. „ 



Crepis rubra (August) „ 



Oentiana acaulis (May) „ 



Oeranium lucidu7n{3'a\y).., „ 



Oilea tricolor (July) „ 



Hedypnois tubiformis (July) „ 



Hieracium PUosella (July).. „ 

 Hypecoumgrandiflorum{3\x\y)„ 



Hypochceris maculata (June) „ 



Lactuca muralis (July) „ 



Oxalis Valdiviana (July)... „ 



Sonchus arvensis (August).. „ 



Specularia Speculum (July) „ 



Tolpis barbata (August).... „ 



8-9 A.M. 



Adonis vemalis (April) „ 



Brassica oleracea (Sept.).... „ 



Diplotaxis tenuifolia (Sept.) „ 



Oentiana asclepiadea{A\jig.) „ 



Oentiana cruciata (July) ... „ 



Oentiana utriculosa (June). „ 



Oeranium columbinum{Aug.) „ 



Helianthemumalpestre{June) „ 



9-10 A.M. 



Anagallis arvensis (July)... „ 

 Anemone Hepatica (April).. „ 

 Anemone nemorosa (April).. „ 

 Calendula officinalis (Sept.) „ 

 CoZcAiflM»iattiMMmasZe(Sept.) „ 



Crepis pidchra (July) shut. 



Crocus aureus (March) open. 



i)ra6a Dema (March) „ 



Eranthis hiemalis (March).. „ 

 Eschscholtzia Californica 



(June) 



Oallasia villosa (July) shut. 



Oxalis Acetosella (April). ... open. 



Tulipa sylvestris (May) „ 



Tussilago Farfara (April).. „ 

 Veronica Cham^drys (May) „ 



