APPENDIX 



213 



■a 

 oo 



■•o 



-(t) 



-0 

 -Ol' 



Melilotus alba, H. 63 



Mentha piperita, var. vulgaris, Langston 



and Leopold. Proc. Amer. Soc. for 



Hort. Sci. 63: 347-352, 1954 

 Oenothera acaulis, C. 218 

 Phleum nodosum, H. 50 

 Phleum pratensis, H. 49 

 Phalaris arundinacea, H. 31 

 Kapha n us sativus, H. 16, Fig. 1-L 

 Ricinus, spp., Scully and Domingo, 1947, 



Botan. Gaz. 108: 556-570 

 Rudbeckia hirta, H. 105 

 Scabiosa ukranica, C. 218, 222 

 Sedum spectabile, H. 98 

 Spinacia oleracea, C. 201, 218, Fig. 1-K 

 Tri folium spp., H. 56 

 Trifolium pra tense, H. 58 



Sweetclover 

 Peppermint 



Pasture timothy 

 Hay timothy 

 Canary-grass 

 Radish 



Castor-bean, variety Ken- 

 tucky 38 

 Coneflower 



Sedum 



Spinach, variety 4 



Clover species 



Red clover, 2nd variety 



29. Long-day plants; no causative effect of temperature; critical dark period 

 inversely proportional to temperature. The one example is a classical object 

 for photoperiodism research. 



Hyoscvamus niger, H. 109, C. 192, 197, Henbane, annual strain 

 Fig. l-I 



30. Long-day plants at low temperature; quantitative long-day plants at 

 high temperature ; no causative effect of temperature. 



Beta vulgaris, H.4 Garden beet 



Brassica pekinensis, H.5 Chinese cabbage 



31. Long-day plants at low temperature; day-neutral at high; no causative 

 effect of temperature. 



Delphinium cultorum, H. 89 Larkspur 



32. Long-day plants at high temperature; day-neutral plants at low tempera- 

 ture; no causative effect of temperature. 



Cichorium intybus, H. 6 Chicory 



33. Long-day plants; no causative temperature effect; low temperature will 

 replace the long-day requirement. This differs from No. 32, in that the 

 low temperature treatment is too low for active growth, and hence the 

 effect is inductive. This is a very interesting category. 



Trifolium subterraneum, Morley, F. H. Subterraneum clover 

 and L. T. Evans, 1959. Australian J. 

 Agric. Research 10: 17-26 



34. Long-day plants; no causative effect of temperature; high temperature 

 will replace a long-day requirement. This is equally interesting, but it 

 might be interpreted as an example of No. 31. 



Rudbeckia bicolor, H. 104 Coneflower 



35. Long-day plants; no direct temperature effect; low temperature induces 

 the day-neutral response. This differs from No. 33 because the low tem- 

 perature treatment is applied to moist seeds, rather than seedlings or 

 young plants. 



Spinacia oleracea, C. 201 Spinach, variety "Nobel" 



