Book  (Jan 2000)  Page(s) 221.  
 
Tokio Herbaceous Peony. Origin unknown pre-1910. A Japanese pink lactiflora

Website/Catalog  (1926)  Page(s) 74.  
 
Rare Single Japanese Peonies
The so-called Japanese Peonies are those which have one or two rows of petals and centers of stamens much thickened. These are almost devoid of pollen and oftentimes make a thick cushion of golden yellow. The effect is very beautiful and distinct and they continue to bloom throughout the Peony season. Although strong growers they propagate slowly and the stocks are usually limited.
Tokio 8.9, tall strong stems with an abundance of dark green foliage. Large flowers of rose-pink petals and a thick mass of incurved stamens. One of the best Japanese pinks which we have ever seen. $7.50 each.

Website/Catalog  (1921)  Page(s) [6].  
 
Japanese Peonies
Tokio...$3.00