Spermacoce ocymifolia
[Slender Buttonweed]

photo
P6100370 (17)
photo
P5280396 (17)
photo
P5280395 (17)
photo
P5280390 (17)
photo
P6100381 (17)
photo
P6100387 (17)

Close-up views:

photo
P6100385 (17)
photo
P6100372 (17)
photo
P5280387 (17)
photo
P6100384 (17)