South Indian Moist Mixed Deciduous Forest (3B/C2)
The trees are comparatively tall. It has a leafless period during dry season which may or may not begin with the cold weather. The top canopy remains leafless between February- May. The under storey is well defined and the forest floor is full of vegetal growth. Portions of moist deciduous forests were clear felled and converted in to plantations of different species such as Teak, Eucalyptus, Silver oak etc. Rosewood, Maruthu, Karimaruthu, Venteak, Vengai, Chadachi etc are abundant in the moist deciduous forests. Irul (Xylia xylocarpa) is conspicuously absent. Bamboos also grow in abundance.
Common tree species found in these forests are given below.
SI.No. Species
1 Terminalia tomentosa
2 Grewia tillifolia
3 Stereospermum chelonoides
4 Dalbergia latifolia
5 Terminalia paniculata
6 Pterocarpus marsupium
7 Careya arborea
8 Lagerstroemia microcarpa
9 Ficus racemosa
10 Alstonia scholaris
11 Tectona grandis
12 Terminalia bellirica
13 Olea dioica
14 Diospyros malabrica
15 Haldina cordifolia
16 Artocarpus hirsutsu
17 Erythrina indica
18 Kydia calycina
19 Wrightia tinctoria
20 Spondias indica
21 Neolamarckla cadamba
21 Dalbergia lanceolata
23 Randia longispina
SI.No. Species
24 Casia fistula
25 Butea monosperma
26 Bombax ceiba
27 Syzygium caryophyllaeu
28 Bridelia crenulata
29 Albizia lebbeck
30 Gmelina arborea
31 Artocarpus heterophyllus
32 Mangifera indica
33 Syzygium cumini
34 Artocarpus ponga
35 Hopea parviflora
36 Randia gardneri
37 Calophyllum inophyllum
38 Anogeissus latifolia
39 Atalantia recemosa
40 Emblica officinalis
41 Michelia champaka
42 Holigarna arnottiana
43 Chukrassia tabularis
44 Buchanania axillaries
45 Cinnamomum malabatrum
 
Ground Vegetation
Shrubs:     Helicteres isora is widely distributed among the ground flora.
Herbs are given below.
1 Acampe praemorsa (Maravazha)
2 Acanthospermum hispidium (Njerinjil)
3 Achyranthis aspera (Kadaladi)
4 Aerva lanata (Cherula)
5 Ageratum conyzoides (Appa)
6 Atylosia goensis (Kattuzhunu)
7 Biophytum sensitivum(Mukkutty)
8 Blainvillea rhomboidea (Murikutty)
9 Cassia tora (Thakara) Centella aseatica (Muthal)
10 Costus speciosus (Channakovva)
11 Crolalaria pallida (Kilukiuppa)
12 Curculigo orchioides (Nilappan)
13 Cucuma aromatica (Kasthurimanjal)
14 Cymbidium aloifolium (Maravazha),
15 Desmodium velutinum (Orila)
16 D.motorium (Thozhukanni)
17 D.pulchellum (Moovila)
18 D.triquetrum (Orila)
19 D.Velutinum (Orila)
20 Eclipta alba (Kanjunni)
21 Elephantopus scaber (Aanachuvadi)
22 Emilia sonchifolia (Muyalcheviyan)
23 Euphorbia hirate (Nilappala)
24 Eupatorum odoratum
25 Exacum bicolor (Poochedi)
26 Flemingia semialata
27 Globba aphioglossa (Kattinchi)
28 Gloriosa superba (Menthonni)
29 Habenaria spp
30 Hydrocytule javanica
31 Hygrophila auriculata (Vayalchulli)
32 Impatiens chinensis (Kashuthumba)
33 Impatiens spp (Kashuthumba)
34 Ipomoea pestigridis (Pulichuvadi)
35 Justicia simplex (Odichukuthi)
36 Lagernandra toxicaria (Neerchengazhi)
37 Leucas aspra (Thumba)
38 Leucas lirts (Thumba)
39 Lobelia nicotianiifolia (Kattupukayila)
40 Malaxis rheedii <(Jeerakam)/td>
41 Mimosa pudica (Thottavadi)
42 Monochoria vaginalis (Neerambal)
43 Naregamia alata (Nilanarakam)
44 Nervillia aragoana (Orila thamara)
45 Oxalis corniculata (Puliyaral)
46 Polyjala arvenses (Kodashari)
47 Pseudarthira viseida (Moovila)
48 Parthenium hyterophorus (Congress grass)
49 Rauwolfia serpentina (Sarppagandhi)
50 Remusatia vivipara (Marachembu)
51 Rubia cordifolia
52 Ruta graveolens (Arutha)
53 Scoparia dulcis (Kallurukki)
54 Sida acuta (Kurinthotty)
55 Sida cordifolia /i>(Kurinthotty)<
56 Sida rhombifolia (Kurinthotty)
57 Sigesbeckia orientalis (Ottadachedi)
58 Spilanthes acmella (Vedhanachedi)
59 Tephrosia purpurea (Kozhijal)
60 Uraria hamosa (Moovila)
61 Urena labata (Uthiram)
62 Vernonia cinerea (Poovamkurinila)
63 Viola betonicifolia
64 Zinziber wightianum (Malai-inchi)
Parasitic herbs
1 Viscum orientale (Ithikanni)
2 Cymbidium aloisolium (Maravazhal)
3 Parmelia dilatala (lichens)(Kalpasam)
Grasses/Cyper etc
1 Arthraxon lanceolatus
2 Alloteropsis cimicina
3 Apluda mutica
4 Brachiaria miliiformis
5 Chrysopogon aciculatus
6 Cymbopogon flexuosus
7 Cynodon arcuatus
8 C.dactyln
9 Digtaria ciliaris
10 D.longiflora
11 Echinochloa colona
12 Elusine indica
13 Eragrostic tenella
14 Eriochloa procera
15 Heteropogon contortus
16 Imperata cylindrical
17 Ischaemum indicus
18 Oplismenns compositus
19 Oryza granulata
20 Panicum notatum
21 Thmed triandra
22 Themeda cymbaria
23 Apluda aristata
24 Paspalum conjugatum
25 Paspulum campactum
26 Cenchrus ciliaris
27 Agrostis stolonifera
28 Sporobolus scabrifotus
Bamboos/Cyper etc
1 Bambusa bamboos
(the thorny bamboo, Mula/ Illi)
2 Dendrocalamus strictus
(Kalmugil)
Climbers
1 Abrus precatorius (Kunnikuru)
2 Aristolochia indica (Garudakodi)
3 Asparagus recemosus (Sathavari)
4 Clitoria ternatea (Shangu pushpam)
5 Coscinium fenestratum (Maramanjal)
6 Cryptolepis buchananu (Vallipala)
7 Cyclea peltata (Padakizhangu)
8 Dioscorea oppositifolia (Noora)
9 D.spicta (Chaval)
10 Diploclisia glauceseens (Vattoli)
11 Entada rheedi (Kakkum kai)
12 Hemidesmus indicus (Nannari)
13 Holosterimma ada-kodien (Adapathiyan)
14 Ichnocarpus frutescens (Palvalli)
15 Piper argyrophyllum (Kattukurumulaku)
16 Piper longum (Thippali)
17 Rhynchosia rofescens (Moovila)
18 Tinosporia cordifolia (Amruthu)
19 Uraria narum (Karivalli)
20 Trichosanthes cucumerina (Kattu padavalam)
21 Ziziphus rugosa (Kotta)
22 Spatholobus roxburghii (Athambu, Attampu)
23 Acacia pennata (Kattuchinikka)
24 Argyreia spp