Hosta rectifolia var. sachalinensis

Once thought to be a species of its own, this naturally occurring variation of the species H. rectifolia was first described by Dr. Fumio Maekawa in 1940. It is slightly larger than the species and has green foliage. This species bears striped, purple leaves with purple anthers from mid-August into September.

       

Taxonomists (people who categorize and name living organisms such as plants) can go into dizzying detail in their arguments over what constitutes a species. However, for most of us, a simple definition is that the plant either currently exists in the wild or there is evidence (fossils, herbaria specimens, etc.) that it once did.

In his investigations, Schmid (1991) found such evidence for 43 species of hostas including the following:

Our database has listings of cultivars related to each of these species of hostas.

In nature, variations occur within plant species that are not great enough to warrant naming an entire new species. These identifiable variations on the wild species are called varieties. Yes, this term is commonly also used, although incorrectly, to signify what is really a cultivar i.e. cultivated variety.

In addition to the 43 species listed above, Schmid (1991), also listed the following significant botanical varieties (naturally occurring) and forms of the genus Hosta:

H. clausa normalis

H. kikutii caput-avis

H. kikutii var. kikutii forma leuconata

H. kikutii var. polyneuron

H. longipes var. caduca

H. longipes forma hypoglauca

H. longipes latifolia

H. longipes forma sparsa

 
H. longipes forma viridipes
H. longipes var. vulgata

H. longissima var. longifolia

H. montana forma macrophylia

H. plantaginea var. japonica

H. sieboldii forma angustifolia

H. sieboldii forma okamii

H. sieboldii forma spathulata

 

 
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