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i) 2B/Cla: Assam Alluvial Plains Semi-Evergreen Forests.
ii) 2B/C1/1S₁ : Sub-Himalayan High Alluvial Semi-Evergreen Forests.

The forests are composed of a large number of evergreen as well as deciduous species like Hollock (Terminalia Myriocarpa) Jutuli (Altingia excelsa), Amari (amoora wallichii), Tita sopa (Michelia champaca), Gonsoroi (Cinnamomum ceciodaphnae), Makrisal (Schima wallichi), Bogipoma (Chikrasia tablaris), Khokan (Duabanga grandiflora), Hillika (Terminalia chebula), Dhum (Canarium resiniferum), Bohera (Terminalia chebula), Dorpat (Allanthus grandes), Simul (Bombax ceiba), Hinguri (Castanopsis indica), Nahar (Mesua ferrea), Urium (Bischofia javanica), Moj (Albizia lucida), Seleng (Sapium baccatum), Paroli (Stereospermum chelonoides), Udal (sterculia villosa), Siris (Albizia procera), Sam(Artocarpus chaplasa), Bondernima(Dysoxylum binectiferum), Sopa (Magnolia spp.), Pichola (Kydia calycina), Thekera (Garcinia spp.), Outenga (Dillenia indica), etc. In the semi-Evergreen forests the proportion of the evergreen species are more than that of the decidous species due chiefly to the higher rainfall in the tract. The middle storey in these forests mainly composed evergreen species like Nahar (Mesua ferrea), Hinguri (Castanopsis indica), Urium (Bischofia javanica), Banderdima(Dysoxylum binectiferum), Seleng (Sapium baccatum), etc. with a little mixture of deciduous species like paroli Paroli (Stereospermum chelonoides), Pichola (Kydia calycina), Moj (Albizia lucida), and Outenga (Dillenia indica), etc.

General description of the forest types: As mentioned in above para the Forests found in the working plan area are diverse and consists of a mixture of large number of tree species. However the forests are aptly grouped in following sub-type depending upon species composition and similarity of important characteristics and each sub-grouped is discussed in detail one by one.

I. Assam alluvial plans semi-evergreen forest - 2B/C1 (a): This forest subtype is generally found in higher elevation in the foothills of Shiwalik and outer Himalayas and in major parts of Gutin and Mebo RFs. The forest is more or less having uniform species composition. The trees are tall, elegant and mixture of evergreen and deciduous species with dominance of evergreen species. Middle and lower storeys consists of mainly evergreen species with dense undergrowth. The ground cover is quite thick and diverse. The floristic composition is given below:

Top storey Hollock (Terminalia Myriocarpa) Jutuli (Altingia excelsa), Amari (amoora wallichii),Borpat(Ailanthus grandis), Gonsoroi (Cinnamomum ceciodaphnae), Sopa (Magnolia spp.)Bogipoma (Chikrasia tablaris), Dhuna (Canarium resiniferum), Bohera (Terminalia belerica), Khokan (Duabanga grandiflora), Hillika (Terminalia chebula), Simul (Bombax ceiba),Udal (Sterculia villosa), etc.

Middle storey: Hinguri (Castanopsis indica), Urium (Bischofia javanica),Moj (Albizia lucida), Jamuk (Syzygium cumunii), Banderdima (Dysoxylum binectiferum), Nahar (Mesua ferrea), Outenga (Dillenia indica), Pichola (Kydia calycina), etc.

Lowers sorey: Boramthuri (Talauma hodgsonii), Selling (Sepium baccatum), Poreng (Olea dioica), Morhal (Vatica lancafolia).

Ground cover: Tita tenga (citrus spp.), Kaupat (Phrynium imbricatum), Kologoch (Musa spp.), Bonposola (Sarauja panduana), Bhat (clerodendron infortunatum), Bihlongoni (Pteris guadrisurita), Jeng (Calamus erectus), Ekra (Erianthus revanas), Dhopatia ( Clerodendron viscosum), etc.

Bamboo: Kako bans (Dendrocalamus hamiltonii), and Bojal Bans ( Bambusa pallida)

Cane: Lejaibet (Calamus floribundus), Raidang bet (Calamus flagellum).

Palm: Toko palm (Livistona jenkensii).

Climber: Dhekialata(Stencx;hinapalustre),Ghilalata(Bauhiniavahlii),Gowalialata( Vitis latifolia), Kumarica lata (Dioscorea indica), Kuchai (Acacia pinnata), Panilata(Vitisplanicaulis),Miicania(Mikanaiamicrantha),etc.

Su b - Himalayan light alluvial Semi- Evergreen forest - 2B/C1/₁S₁ :

This forest subtype is generally found distributed in the outer and eastern side of Gutin RF and parts of Mebo RF. Evergreen species are dominant though deciduous species are also present in significant proportion and the forest is a mixture of both species. Middle storey is prominent and consists of mixture of evergreen and deciduous species with abundant shrubby undergrowth. Floristic composition of this forest is almost same as that of 2B/C1 (a) the important variation being prominence of Jutuli (Altingia excelsa) and Hollock (Terminalia myriocarpa). The floristic composition is given below:

Top Storey: Hollock ( Terminalia myriocarpa), Jutuli (Altingia excelsa), Bonsum (Phoebe goalparensis), Sopa (Magnolia spp.), Hingori (Castanopsis indica), Dhuna (Canarium resiniferum) Poma (Cedrela toona), Mekahi (Phoebe cooperiana), Amari (Amoora wallichii), Bohera (Terminalia belerica), Khokan (Duabanga grandiflora)

Middle storey: Haldisopa( Adina oligocephala), Jamuk (syzygium cuminii), Nahar( Mesua ferrea), Banderdima (Dysoxylum binectiferum), Sam (Artocarpus chaplasha), Pichola (Kydia calycina), Moj (Albazia lucida), Sia Nahar (Kayea assamica), Selleng (Sapium baccatum) etc.

Lower story: Bual (Bhertia acuminata), Boromthuri (Talauma hodgsonii), Gahari sopa (Magnolia griffithii), Bon am (Mangifera sylvatica), Surat (Laportea cranulata),etc.

Ground flora: Hati bhekuri (solanum subtrucatum), Bonposala (Sarauja punduana), Kaupat (Phrynium imbricatum), Tora (Albina alludhas), Bhat (Clerodendron infortunatum), Kolgoch( Musa spp.), Bogitora(slopina molluccensis).

Bamboo: Kako bans (Dendrocalamus hamiltonii), Bojal bans (Pseudostachyum polymorphum).

Cane: Lejai bet (Calamus floribundus) Raidangbet(Calamus flagellum).

Palm: Toko palm(Livistonia jenkensii), Jeng (Calamus erectus).

Climber: Ghila lata (Bauhinia vahlii), Pani lata (Vitis planicaulis), Kuchai (Acaci a pinnata), Gowlia lata (Vitis latoflolia), Dimorulata (Ficus scandens), Hegumi lata (Tinospora cordifolia), Mermeri lata (Gnetum scandeus), etc.

III. Eastern Hollock forest 3/lS₂(b): This type of forest is found in the higher riverian areas of Pasighat, Poba and Pasighat Station RF. In this type of Forest evergreen trees are dominant in top canopy. Hollock is found in higher proportions. There is dense 'and shrubby undergrowth without grass. The soil is alluvial mainly sandy with claypatches in depressions. The floristic composition is given below:

Top Storey: Hollock (Terminalia myriocarpa )_rKhokan (Duabanga grandiflora), Bogipoma (Chikassia tabularies), Hatipoila (Pterospermum acerifolium), Poma( Toonaciliata), Simul (Bombax ceiba), Borpat (Ailanthus grandis), Dhuna (Canariumresiniferum), SopaMagnolia spp.), Hillika( Terminalia belerica), and (Heritieri macrophylla), etc.

Middle Storey: Hingori (Castanopsis indica), Pichola (Kydia calycina), Banderdima (Dysoxylambinectiferum), Paroli (Stereospermum chelonoides), Urium (Bischofiajavanica), Outenga (Dillenia indica), Koroi (Albizia procera), Moj (Albizia lucida ) etc.

Lower Story: Jamuk (Syzygium cuminii), Poreng (Olea dioica), Dimuru (Ficuslepidosa), Boramthuri (Taluma hodgsonii), Selleng (Sapium baccatum), Morhal (Vatica lancaefolia), etc.

Ground Cover: Kaupat (Phryniumimbricatum), Bhat (Clerodendron infortunatum), Tora Tenga (Citrus spp.) Dhopatia ( Clerodendron viscosum) , Bogitora ( Slopina molluccenisis), Khagri (Saccharum spontaneum), Kolgoch (Musa spp.) Ikra ( Erianthus ravanas) etc.

Bamboo: Kako (Dendrocalamus hamiltonii), Bohal bans (Pseudostachyum polymorphum)

Cane: Lejai bet (Calamus floribundus)

Other M.F.P.: Pipli (Pipper spp.), found particularly in Pasighat Reserve Forest.

Climber: Ghila lata (Bauhinia vahlii), Kachai (Acacia pinnata), Pani lata (vitis planicaulis), Mikania (Mikania micrantha), Dhekia lata (Stenochina palustre), Kumaric lata (Dioscorea indica), etc.

IV. Secondary moist bamboo brakes 2b/2S₁ :Secondary moist bamboo brakes occur in scattered patches throughout all the Tropical Semi Evergreen forests especially in Gutin and Mebo RF. When the bamboo brakes have overhead trees they form thinner clump, but at places where pure bamboo patches are found, the clumps are thick an there is no possibility of regeneration of any tree species in these bamboo species found in the forests are given below:

A. Kako Bans (Dendroacalamus hamiltonii) B. BijuliBans(Bambusapallida) C. BojalBans(Pseudostrachyumpolymorphum)

Undergrowth: The under growth mostly consists of Kaupat (Phrynium imbrication), Bhat (Clerodendron infortunatum), Ranga Bhat (Clerodendron viscosum).
Section-2: Orchids: The following orchids occur in the R.F's which are of very high value. Some of the endangered Orchids e.g. Coelogyne barbata, Galeola falconeri, Paphiopediluni fairieanum, etc. are also found in the R.Fs. These orchids need preservation as well as protection to avoid extinction of these species within a short span of time.

Wildlife: The Division is rich in wildlife both in variety and number. In the past one had not to go see animals. Sambar an barking deer were a common sight. Elephant herds were frequently Tigers and panthers were also quit common. The wild life has dwindles over the years ' poaching and customary hunting by local tribals. However wildlife is still available in fair number compared to the adjoining state. There are about 20 to 25 species of mammals including rats and smaller animals. Avi-faunais particularly rich. Reptiks and Fish population is also rich. Apart from vertebrates a large number of invertebrate animals are found in these forests. The wildlife commonly found in the R.F's are given below:

i) Three varieties of Owls. ii) Partidges. iii) Peacock Pheasant iv) Tragopan v) Water hen vi) Night Jar vii) Different kind of Thrushes viii) Barbets ix) Wood peckers x) Babblers xi) Bluwjoy of Rollar xii) Lapwing xiii) Tragopan xiv) Pintailed Green Pigeon xv) Ashy Wood Pigeon xvi) Spekled Wood Pigeon xvii) Parakeets xviii) Kingfishers xix) Great Indian pied hornbill xx) Wreathed Hornbill xxi) Orioles xxii) Four varities of Drongoes xxiii) Robin xxiv) Wall Creeper xxv) Chlorposis xxvi) Bulbul xxvii) Sun Birds xxviii) Hill Myna xxix) Common myna xxx) Jungle Crow xxxi) Flower peckers xxxii) Wag tails xxxiii) Hoopoe xxxiv) Egret and Herons xxxv) Little cormorant xxxvi) Stroks xxxvii) Bronze winged Jacana xxxviii) Indian Coursers xxxix) Emereld dove xl) Spotted Dove xli) Koel xlii) Coucal xliii) Hawk cockoo or Brain fever bird.

a) Snakes: Large number of species of snakes are found in the Division including both poisonous and non-poisonous. Important snakes found in these forests are mentioned below :-

Poisonous Snake: i) Spectacled Cobras or Common Cobras - Najanajanaja, ii) Monocled Cobra - NajanajaKaoutha, iii) King Cobra- Ophiophagus harm (Sonko chur) iv) Black Krait - Bungarusniger v) Banded Krait - Bungarus fasciatus vi) Pit vipers- Trimeresurus specie vii) Russels viper- Viperaruselli

Non -poisonous snake: i) Indian Python-Python molurus ii)Yellow ballied Forest - Rhabdophis bicelor snake iii) Common Indian black snake - Xenochorphis iv) The Whip snake v) Common Cat snake - Boigatrigonata vi) Checkered keel back - vii) Himalayan keel back - Rhapdophis himalayan viii) Rat snake - Ptyasmucosus ix) Striped keel back - Amphiesmastolate

b) Lizards: Different varieties of Lizards are found "Guisap" (Monitor Lizards) are fruit common, Gharials are also found in the Subansiri River.

Fishes: There are large number of fresh water fish found in the perennial stream, lakes, ponds and rivers.

List of Endangered Wildlife of Arunachal Pradesh:

(i) Endangered Flora: 1. Magnolia griffithii HK. f. & Th.. 2. M. gustavi King 3. Maglietia insignis BI. 4. Dicentra roylei HK.F.& Th. 5. Saurauia griffithii 6. Ilex embeloides HK.F 7. I.. Venul.osa H.K.f 8. Euonymus bullatus wall cx Lindl. 9. Phanera Khasiana (Baker) Thoth. 10. Merrilliopanax cordifolia Sastry 11. Mydelia mukherjiana. 12. Nertera sinensis Homsi. 13. Leptodermis scabrida 14. Rhododendron concinnoidea Hutch. Et. Ward. 15. R. nuttallii Booth 16. R. santapaui Sastry et al. 17. R. subansiriense Chamberlin 18. Alniphyllum fortunei (Hemsi) Makino 19. Haodendron biaristatum (Sm.) Rehder. 20. Pauia belladonna Deb et Detta. 21. Galeola nudifolia Lour. 22. Christnensenia aesculifolia (BI) Maxon 23. Agapetea subansirica G.D. Pal 24. Sapria himalayana Griff. 25. Primula subansirica G.D. Pal 26. Ophiorrhiza talevallensis G.D. Pal 27. Aconogonum pangianum G.D. Pal 28. Acanthephi sychetense Lind I 29. Coptis teeta Linn.

Source: Botanical Survey of India, Itanagar (ref.vide No. BST/ASS/1194-Tech/883 dt, 14-12-94)

(ii) Endangered fauna

A. Mammals:

1.	Hylobates hoolock (Harlan)	Hoolock Gibbon
2.	Helarctos malayanus (Raffles)	Malayan Sun Bear
3.	Urnus arctos isabellinus (Horslleld)	Himalayan Brown Bear
4.	Ailurus fulgens (Cuvier)	Red Panda
5.	Arctictis binturong (Raffles)	Binturong
6.	Priondon pardicolor (Hodgson)	Spotted Linsang
7.	Felis marmorata (Martin)	Marbled Cat
8.	Felis temmincki (Vigors & Horsfield)	Golden Cat
9.	Neofelis nebulosa (Griffith)	Clouded Leopard
10.	Moschus ohrysogaster (Hodgson)	Himalayan Musk Deer

B. Aves:

1.	Ciconia ciconia boyciana (Swinhoe)	Eastern White Stock
2.	Platalea leucorodia major (Temminck & Schlege)	White Spoon bill
3.	Falco biammicus (Temminck)	Lagger Falcon
4.	Tragopan temmincki (J.E. Gray)	Temminck's Tragopan
5.	Crossoptilon crossoptilon harmani (Elwes)	Elwes's Eared Pheasant
6.	Lophophorus soletari (Jardon)	Sclater's or Mishmi
7.	Eupodotis bengalensis (Gmelin)	Bengal Florican
8.	Buceros bicornis homrai (Hodgson)	Great Pied Hornbill

Source : Zoological Survey of India (Ref. Vide kr. Mo. F.4-2/94-Tech/788 did. 14.12.94.)

Sl.No	Name of R.F	Total Area as per Notification
1	Gutin	11,218.0 ha
2	Poba	10007.6 ha
3	Pasighat	4596.0 ha
4	Pasighat Station	159.2 ha
5	Gali	1638.4 ha
6	Remi	1300.0 ha
7	Mebo	1300.0 ha

1	Acampe papillosa	23	B. penicillium	45	Cymbidium aloifolium	67	E. fragrans
2	A.rigida	24	Culanthe el aval a	46	C. mitnronianum	68	E. striata
3	Acanthophippium sylheinse	25	C. biloha	47	Dendrobium acinacijorme	69	E. graminifolia
4	Aerides mulliflorum	26	C. densiflora	48	D. aphyllum	70	E. spicala
5	A williamsii	27	Ceratostylis teres	49	D. caieartii	71	Gastrochil us calceolaris
6	Agrostophyllum brevipes	28	Chiloschista lumfera	50	D. cumalatum	72	G. dasypogon
7	Arundina graminifolia	29	Cleisocentrom triehromum	51	D. pimbiatum var, Oculaium	73	Galeo la fulconeri
8	Anthogonium gracile	30	Cleisostoma receniforum	52	D. densiflorum	74	Geodorum purpureitm
9	Arachnis clarkii	31	Cleisosioma filiforae	53	D. falconeri	75	Goodyer procera
10	Beirmannia bimaculaia	32	Coelogyne flavida	54	D. hookerianum	76	Kingigidium deliciesum
11	Bulhophyllum capillipes	33	C. barbata	55	D.jonkensii	77	Lipans duthiei
12	B. delitencens	34	C flaccula	56	D. pendulum	78	L. planlaginea
13	B. hirtum	35	C. grifflthii	57	Epigeneiwn amplum	79	Luisia lereiifolia
14	B sikkimense	36	C. nitida	58	Cryotochilus sanguinea	80	L. filiformis
15	B. leopardinum	37	C. prolif era	59	Diplomeris hirsute	81	Malaxis laifolia
16	B. acudum	38	C. schullesii	60	Eria acervata	82	Micropera mannii
17	Nervulia frammieana	39	Pleione praccex	61	Paphiopedilum fairieanum	83	Unsifera obtusifolia
18	Operonia maxima	40	Renenthera indica	62	Otochyllum fusca	84	Papilionthe teres
19	Oeacaulis	41	Thelasis Longfolia	63	Ornithochilus difformis	85	Vanda alpine
20	Phalaenopsis parishii	42	Pterocera guavcolens	64	Rhyncostylis retusa	86	Phaius flavus
21	P. tankervilliae	43	Trixperum pygmaeum	65	Pholidoda articulate	87	Tylostylis discolor
22	Pomatocalpa armigerum	44	Vanda coerulescens	66	Phreatia flegans	88	Zeuxine strateumatica

Sl. No.	Family		Scientific Name	English Name	Local Assamese Name
1	Primates
	a) Monkeys	1	Presbytes entellus	Commob langur	Hollock
		2	Macaca	Assames Macaque	Bander
		3	Assamensis	Macaca mulata	Bander
	b) Lemurs	1	Rhesus macque	Slow Loris	Lazuki Bander
			Nycticebus coucang
2	carbuvires felidas	1	Panthera tigris	Tiger	Bagh
	carnivores felidas	2	Panthera Pardus	Leopard	Nahar phutuki bagh
	a) Cats
	Felidas	3	Neofelis nebulosa	Clouded leopard	--
		4	Felish bengalensis	Leopard cat	Lotamakuri bagh
		5	Felish chaus	Jungle cat	--
	b) Dogs	1	Coun alpinus	Wild dog	Ram kukur
		2	Canis aureus	Jackal	Boudh sial
		3	Vulpes bengalensis	Indian fox	Sial
	c) Civets veverridae	1	Veverra zibertha	Large Indian Civet	Hapah
	Civets veverridae	2	Viverricula indica	Small Indian Civet	Hapah
	d) Mongoose	1	Herpestes edwardsi	Common mongoose	Neul
	Harpestidae	2	Herpestes auropunctatus	Small Indian mongoose	Neul, Udd.
	e) Other musta iidae	1	Lutra lutra	Common otter
3	Herbivores
	a) Elephant		Elephasmiximus	Indian elephant	Hati
	proboscidae
	b) Cattle bovidae		Bos frontalis	Mithun	Mithun
			Bubalusbubalis	Wildbaffalo	Moh
	c) Goats bovidae		Likely to occur at higher altitude
	d) Deercervidae Deer cervidae Deer cervidae		Cervus unicolor Muntiacmuntjak moschus moschiferus	Sambor Barking deer Musk deer	Sorpohu Segoli pohu Kosturib pohu
4	Insectivors Order pholidota		Manis crassicurudata	Indian pangolin	Banrou
5	Omnivores a) Bear b) Boar suidae		Selenarctos thibetanus (Sloth bear is also Likely to be found) Sus scrofa	Himalayan Black Bear Indian wild pig	Bhaluk
6	Hares Leporadae		Lepusnigricollis	Rufous tailed hare	Sohapohu
7	Rhodents a)Percupine b) Various species of rat, mole & shrews c) Squirrels		Hystrixindica	Indian percupine	Ketelapohu

1.	Crocodylus palustris (Lesson)	Marsh Crocodile/Mugger
2.	Varanus bengalensis (Daudin)	Common Indian Monitor
3.	Varanus flavescens (Hardwicke & Gray)	Yellow Monitor
4.	Python molurus (Linnaeus)	India Rock Python
5.	Python reticulates (Schneider)	Reticulated Python.