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the number of hosta species

Let me quote from my article on hosta species ( the number of 
hosta species in the very valuable book of  Schmid of 43 is 
mainly based on the article of Maekawa of 1940 with 38 
species instead of on the article of Maekawa of 1969 with 27 
species or better on the 22 species of Fujita) is:
The number of Hosta species
From the 14 Japanese species recognized by Fujita (1976[18]) 
H. alismifolia F. Maekawa (= H. longissima x H. montana; 
Sugita, 1994) and H. tardiva are shown here to be hybrids. 
Two synonyms mentioned by Fujita (1976[18]),  H. rupifraga 
and H. rectifolia, are reclassified as species. H. gracillima is 
demonstrated here to be a separate species; related to H. 
sieboldii, and not a varietas of H. longipes. Further there are 
two Chinese species and four Korean species, only casually 
mentioned by Fujita (1976[18]). Together with two new Korean 
species as mentioned by Chung et al., (1991d[15]), this adds up 
to the 23 species accepted here (excluding the newly described 
H. albofarinosa, see below). This is similar to the total number 
of 22  species for Fujita (14 Japanese + 8 Chinese/Korean 
species) or the total number of 22-25 species suggested by 
Chung et al., (1991d[15]). 

Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
Fax: 31-71-5274999
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