Sagittaria graminea subsp. weatherbiana




Family Alismataceae
Scientific name Sagittaria graminea Michaux subsp. weatherbiana (Fernald) R. R. Haynes & Hellquist
Synonyms Sagittaria graminea Michaux var. weatherbiana (Fernald) Bogin; Sagittaria weatherbiana Fernald
Common name (Japanese common name) nagaba-omo-daka (ナガバオモダカ, 長葉面高 [meaning: long leaved face with craning neck])
(English common name) Weatherby's arrowhead
Distribution (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa
(Other nations) [native] USA
Habitat Swamp
Chromosomal number 2n=22
Description Plants 20-60cm or over. Leaves 10-25cm long, 1-2.5cm wide. Scapes 15-70cm. Flowers white ca. 1.5cm, flowering in April to September. Perennial plants.
Reference Sagittaria graminea Michx. subsp. weatherbyana (Fernald) R. R. Haynes & Hellq.
Sagittaria graminea Michx. var. weatherbiana (Fernald) Bogin
Sagittaria graminea Michaux
Sagittaria graminea Michx. var. weatherbiana (Fern.) Bogin
Note Naturalized plants (forst discovered at Kyoto in 1970th). Only female plant is naturalaized in Japan.
Sagittaria graminea subsp. weatherbiana = phyllodia 1-2.5cm wide, Sagittaria graminea subsp. graminea = phyllodia 1cm wide and Sagittaria graminea subsp. chapmanii = phyllodia 1cm wide.



August 2007 at lowland swamp August 2007 at lowland swamp August 2007 at lowland swamp