Spotless grass yellow (Eurema laeta laeta)

Rather uncommon butterfly, found all the year round in patana grasslands of mid hills (500ft to 3000ft).Spotless grass yellow is a migratory species and its larva feeds on Chamaecrista leschenaultiana, Chamaecrista kleinii , Chamaecrista mimosoides and Chamaecrista nictitans (All Chamaecrista species are known as බිං සියඹලා in Sinhala)

Small Grass Yellow (Eurema brigitta rubella)

Locally common butterfly occurs in grasslands of the hills from 200-2200m asl. Its larva feeds on Chamaecrista leschenaultiana, Chamaecrista kleinii , Chamaecrista mimosoides and Chamaecrista nictitans (All Chamaecrista species are known as බිං සියඹලා in Sinhala)

Common Grass Yellow (Eurema hecabe simulata)

Common butterfly found in all elevations of the country throughout the year. Common grass yellow is a migratory species. Its larval host plants are

1. Sesbania bispinosa
2. Sesbania grandiflora (කතුරු මුරුංගා/Agati/Vegetable hummongbird)
3. Sesbania speciosa
4. Acacia eburnea (කුකුල් කටු/ගිනි අන්දර/Cockspur Thorn)
5. Acacia leucophloea(මහ අන්දර/කටු අන්දර)
6. Aeschynomene americana (Thornless mimosa)

7. Aeschynomene aspera (මහ දිය සියඹලා/Pith plant/Shola/Shola pith)

8. Aeschynomene indica (දිය සියඹලා/හීන් දිය සියඹලා/Indian jointvetch/Budda pea)
9. Albizia chinensis (කබල් මාර/හුලං මාර)
10. Albizia lebbeck (සූරිය මාර)
11. Albizia odoratissima (සූරිය මාර)
12. Caesalpinia hymenocarpa (ගොඩ වවුලැටිය)
13. Caesalpinia pulcherrima (මොණර මල්/Peacock flower/Paradise flower)
14. Cassia roxburghii (රතු වා/Ceylon cassia/Red cassia)
15. Pithecellobium dulce (මැනිලා සියඹලා/Madras thorn/Manila Tamarind)
16. Senna alata (රට තෝර/Candle bush/Candle stick/Rinworm shrub)
17.  Senna tora (පෙති තෝර/Pot Cassia/Sickle Senna)
18. Vachellia nilotica (කටු කිහිරි)
19. Chamaecrista absus
20. Mimosa diplotricha (Giant sensitive plant/Creeping mimosa)
21. Cassia grandis

බින් සියඹලා[Bin Siyabala] (Chamaecrista kleinii [Syn: Cassia kleinii])

Very common indigenous erect or procumbent perennial herb grows in both dry and wet lowlands. 

බිං සියඹලා[Bin Siyabala](Chamaecrista leschenaultiana [Syn: Cassia auricoma])

An indigenous herb occurs along roadsides, plantations and patans of the hill country.

බින් සියඹලා[Bin Siyabala]/Feather-leaved cassia/Fish bone cassia (Chamaecrista mimosoides [Syn: Cassia mimosoides])

A native herb  common in open grassy patches from sea level to about 1200 m elevations.