Hosta pachyscapa
aka Benkei Gibōshi

The Hostapedia by Mark Zilis (2009) says, "...native to Honshu Island, Japan... 22" high...slightly shiny, medium green foliage...very shiny underside...pale lavender flowers...early to late August...This is one of the lesser known Hosta species."

According to The Genus Hosta by W. George Schmid (1991), this large size (20 inches high by 26 to 36 inches wide) species was first named and described by Dr. Fumio Maekawa. It is related to Hosta kiyosumiensis and has slightly rippled, smooth textured, dark green foliage. Pale purple flowers with purple dotted anthers bloom from June into July followed by viable seeds.

The New Encyclopedia of Hostas by Diana Grenfell (2009) states: "Increases rapidly. Rarely seen in cultivation...An extraordinarily thick scape, which tends to droop toward the end of the flowering period."

Similar to H. kiyosumiensis which is a bit larger.

Seedlings include H. 'Passionate Purple'.

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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