Oldenlandia diffusa
[Snake-needle Grass, Bai Hua She She Cao]

photo
DSC06180 (08)
photo
PA040211 (20)
photo
DSC08753 (08)
photo
DSC06190 (08)
photo
PA040220 (20)
photo
DSC03943 (09)

Close-up views:

photo
PA040207 (20)
photo
P1280207 (18)
photo
P1280199 (18)
photo
PA040223 (20)

The pictures above were taken in the wild. The ones below were cultivated and used as ground cover in a roof-top garden. According to the Flora of China website, the flowers should be "pedunculate; peduncles or pedicels 4-20 mm" meaning that they should have a flower stalk of 4-20 mm. The flowers from the cultivated form do not seem to have a stalk. However, it is named as Hedyotis diffusa (a synonym of Oldenlandia diffusa) in the Flora & Fauna Web.

In the 2019 Flora of Singapore publication on the family Rubiaceae, the set of pictures on Hedyotis diffusa showed in page 120 resembled the wild form above. In the Kew Science website, the accepted botanical name of this plant is Scleromitrion diffusum while both Oldenlandia diffusa and Hedyotis diffusa are treated as synonyms. However, Scleromitrion diffusum is not found in Plant List website. Instead, Oldenlandia diffusa is the accepted name while Hedyotis diffusa is the synonym.

In conclusion, the identity of the cultivated form is not certain but I will park the pictures here for the time being.

photo
P9260376 (20)
photo
P9260389 (20)
photo
P9260382 (20)
photo
P9260394 (20)
photo
P9260385 (20)
photo
P9260387 (20)
photo
P9260212 (20)
photo
P9260390 (20)

Close-up views:

photo
P9260383 (20)
photo
P9260381 (20)