10 MISSOURI AGR. EXP. STA. RESEARCH BULLETIN NO. 17 



The following herbaceous species failed to grow either when 

 just ripe or after being dried out: 



Amaranthus spinosus, Linn. Lathyrus sp. 



Bidens connata, Muhl. Lepidium virginicum, Linn. 



Widens bipinnata, Linn. Oxalis sp. 



Blephilia ciliata, Raf. Phleum pratense, Linn. 



Calliopsis sp. Phytolacca decandra, Linn. 



Carex Shortiana, Dewey & Torrey. Plantago major, Linn. 



Digitalis purpurea, Linn. Saponaria officinalis, Linn. 



Ellisia Nyctelea, Linn. Sida spinosa, Linn. 



Erigeron canadensis, Linn. Solarium carolinense, Linn. 



Fragaria virginiana, Duchesne. Trifolium repens, Linn. 



<Galium sp. Trifolium pratense, Linn. 



Geranium maculatum, Linn. Verbascum Blattaria, Linn. 

 Lactuca Scariola, Linn. 



The following woody species failed to make any growth what- 

 ever, both where they were just ripe and after being dried out during 

 the summer or fall : 



Amelanchier canadensis, Torr. & Gray. Prunus Cerasus, Linn. 



Aesculus Hippocastanum, Linn. Prunus sp. (plum). 



.Asimina triloba, Dunal. Prunus Persica, Sieb. & Zucc. 



<Caragana arborescens, Lam. Rhamnus lanceolata, Purch. 



-Carya ovata, (Mill.) K. Koch. Rhus Cotinus, Linn. 



Elaeagnus longipes, Gray. Rhus sp. 



Fraxinus americana, Linn. Ribes nigrum, Linn. 



Hamamelis virginiana, Linn. Ribes gracile, Michx. 



-Juglans nigra, Linn. Rubus Idaeus, Linn., var. aculeatis~ 

 Lonicera tatarica, Linn. simus, Hort. 



Of the fifty-five species of seeds of herbaceous forms planted, 

 twenty-five or 45.5 per cent, failed to germinate either immediately 

 following maturity or after being dried out. Of the remaining 54.5 

 per cent that grew, there was an equal number of the mature and 

 dried seeds altho three from each list (but not the same species in 

 ,ach case) made no growth. 



Twenty-four species of seeds of woody plants were tested for 

 germination, both at maturity and after being dried out. Three of 

 the former and five of the latter, or a total of 20.8 per cent, germi- 

 nated while 79.2 per cent made no growth whatever. 



Of all the twenty-seven species of seeds planted at maturity that 

 grew, the average time required for germination was 12.4 days, while 

 the average for those that were dried out was 16.8 days. Drying 

 apparently lengthened the time required for growth to the extent of 

 4.4 days. 



Comparing the percentage of the mature and dried seeds that 

 germinated, it is found that the former amounted, on the average, to 

 44.3 per cent, while the latter was 47.9 per cent. The dried seeds, there- 

 fore, required a longer time for germination to take place, but the 

 germination was greater by 3.6 per cent. 



