78 KANSAS Academy of Science. 



3 to 4 A. M. . . .(Enothera speciosa; lasts all next day. 



4 A. M Ipomoea leptophylla; closes at noon. 



Convolvulus arvensis; closes at 10 a. m. 



4 to 5 A. M.... Ipomoea purpurea; closes about noon, except when the weather is 



cool and cloudy. 



5 A. M Ipomoea hederacea; does just about the same. 



Mentzelia oligantha; closes at 1 p. m. 



5 to 6 A. M. . . .Commelyna virginica; closes in heat of day. 



Tradescantia virginica; closes after noon. 

 Evolvulus argenteus; closes at 4 p. m. 



6 A. M Castalia odorata; closes at 3 p. m. to reopen. 



Pyrrhopappus scaposus; closes at 6 p. m. to reopen; closes also in 



continued rain or dense cloudiness. 

 Sonchus oleracea; withers at noon. 



7 A. M Callirrhoe involucrata; closes 6 to 7 p. m. to reopen next day. 



Troximon cuspidatum; closes at night to reopen. 

 Taraxacum dens-leonis ; closes at dark to reopen, except in rainy 

 weather, when it may be closed in daytime and open at night. 



7 to 8 A. M. . . .Oxalis stricta; closes at noon for good. 



Oxalis violacea; closes at noon to reopen? 



8 A. M Linum rigidum ; falls off at 4 p. m. 



8 to 9 A. M ... . Specularia leptocarpa; closes permanently at 2 p. m. 



9 A. M Portulaca pilosa; closes at 1 p. m.; does not reopen. 



Portulaca grandiflora; closes at 2 p. m. to reopen. 

 Portulaca oleracea; wilts after noon. 



10 A. M Mesembryanthemum spectabile; closes at 2 p. m. to reopen for sev- 



eral days. 



11 A. M Talinum teretifolium; closes in afternoon. 



Mesembryanthemum crystallinnm; closes to reopen. 



12 M Hibiscus trionum; closes again at 2 p. m. 



1 p. M Silene antirrhina; lasts until night. 



2 p. M Mamillaria vivipara; closes at 5 p. m. to reopen next day. 



Mamillaria missouriensis; does the same. 



3 p. M Mentzelia nuda; closes at daylight to reopen. 



4 p. M Mirabilis jalapa. 



Oxybaphus nyctagineus; closes next day. 



4 to 5 p. M . . . .Oxybaphus angustifolius; closes 5 a. m. next day. 



5 p. M Mentzelia ornata; closes in the morning to reopen. 



5 to 6 p. M ... . Silene noctiflora; wilts next morning. 



Datura stramonium; wilts next morning. 



6 p. M Oenothera triloba; lasts nearly all next day. 



Abronia fragrans; wilts early in the morning. 

 Gaura coccinea; fades next day. 



6 to 7 p. M Heliotropium convolvulaceum; wilts next day. 



fEnothera sinuata; wilts next day. 



7 p. M Datura metel; closes and wilts next morning. 



CEnothera missouriensis; wilts at sunrise. 



Oenothera grandiflora; opens very promptly; wilts at 7 a. m. next day. 



8 p. M Gaura biennis; wilts about 10 a. m. next day. 



Gaura parviflora; does the same, pretty much. 



9 p. M Ipomoea bona-nox ; closes early next forenoon. 



