| Family | Acanthaceae |
| Subamily | Acanthoideae |
| Tribe | Ruellieae |
| Scientific name | Hemigraphis reptans (G. Forster) T. Anderson ex Hemsley |
| Synonyms | Hemigraphis okamotoi Masamune |
| Common name | (Japanese common name) hiroha-sagi-goke (ヒロハサギゴケ, 広葉鷺苔 [meaning: broad leaved heron moss]), miyakojima-sou (ミヤコジマソウ, 宮古島草 [meaning: Miyakojima Island weed]) |
| (English common name) none | |
| Distribution | (Japan) Okinawa (Miyakojima Island) |
| (Other nations) Taiwan, Marshall Islands, Micronesia, French Polynesia, Kiribati, New Caledonia | |
| Habitat | Seaside limestone rocks, sand beach |
| Chromosomal number | unknown |
| Description | Plants creeping. Leaves 1-2cm long. Flowers white corollas ca. 1cm across, flowering in all seasons. Evergreen. Perennial plants. |
| Reference | Hemigraphis reptans (G. Forst.) T. Anderson ex Hemsl. |
| Hemigraphis reptans T. Anderson ex Hemsl. | |
| Systems And Methods For Determining Carbon Credits (United States Patent Application 20080131974) | |
| Note | Rare species. |
| September 2005 at Shinjuku Gyoen National Garden |
September 2005 at Shinjuku Gyoen National Garden |
September 2005 at Shinjuku Gyoen National Garden |