BLUE FLOWERS. 



87 



garitacea, August ; sweet pepperbush, clethra alnifolia, 

 July ; plantain-leaved everlasting, antennaria plantagin- 

 ifolie, August. 



BLUE FLOWERS OF SPRING. 



Pasque flowers, anemone patens, var, nutalliaria, 

 April ; clover leaf, hepatica triloba, April ; bluets, hous- 

 tonia coerulea, April ; crested iris, iris cristata, May ; 

 spring iris, iris verna, April ; Jacob's ladder, polemo- 

 nium reptans, May ; violet wood sorrel, oxalis violacea, 

 May ; common blue violet, viola cucullata, April, June ; 

 larkspur-leaved violet, viola delphinifolia, April ; hand- 

 leaf violet, viola palmata ; arrowhead violet, viola 

 sagittata, April ; robin's plantain, erigoron bellidifolium, 

 May. 



BLUE FLOWERS OF SUMMER. 



Slender blue flag, iris virginica, June ; large blue 

 flag, iris versicolar, May, June ; perennial flax, linum 

 virginianum, June, August ; many-leaved lupine, lupi- 

 nus perennis, June ; prairie clover, petalostemon viola- 

 ceus, July ; western spiderwort, tradescantia pilosa, 

 June, September ; common spiderwort, tradescantia vir- 

 ginica, May, August ; succory or chicory, cichora inty- 

 bus, July, October ; blue-eyed grass, sibyrinchium bermu- 

 diana, June, August. 



BLUE FLOWERS OF AUTUMN. 



Tall larkspur, delphinium exaltatum, July ; robin's 

 plantain, erigoron belledifolium, fringed gentian, gen- 

 tiana crinita, September; monkshood, aconitum uncin- 

 atum, June, August ; harebell, campanula rotundifolia, 

 July; blue asters, aster azurens, curtisii, shortii, July ; 



