Trees, naturally, form the main part of the woodlands at San Carlos de Bariloche. Particularly the six nothogagus species: coihue, raul, roble pelln, lenga, guindo or coihue magallnico and ire, while we may add to this catalogue: larch, cypress, radal, maitn, maniu, cinnamon tree, etc.

Some of them make the landscape more beautiful in fall, when they change the color of their leaves, while others are evergreens. Every tree protects the land on the mountainsides, preventing erosion and providing shelter to an incredible living creatures.

Some species can be observed near the city. As an example, at Los Cntaros lagoon there are 800 year-old larches; facing the town hall there is a spectacular maitn plantation, dating from 1963, and at the corner of Ada M. Elflein and Villegas St. stands a majestic maitn.

At the corner of Morales and Juramento Streets, in the National Parks building gardens, the following native species can be observed: larch, cypress, lignum vitae, bluethorn, chilco, colihue, michay and calafate. The gigantic coihues and cypresses were planted only in 1948.

ARRAYAN (Luma apiculata):a persistent foliage tree. Its bark, smooth and of a rusty cinnamon color, is soft and cold to touch. It reaches a maximum height of 13 m and the trunk is twisted. It grows in damp, wet places. It forms thick pure woods in the North of Isla Victoria and at Quetrihu Peninsula, where the arrayanal (forest of these trees) is a well-liked visit. Its fruit is fleshy, with a purplish black colour. It has white flowers with four large petals, like those of the European myrtle. It flowers in January and February.

CYPRESS (Austrocedrus chilensis):this tree pertains to the cypress family. It is an evergreen species with a conical top, a strong and straight trunk, grayish, somehow rough bark, and stubby branches. It can attain a maximum height of 25 to 30 m. It does not need too much humidity, and thus covers large areas of the eastern part of the park

COIHUE (Nothofagus dombeyi):this tree belongs to the fagaceae family. It is a tree that reaches a gigantic size in almost every wood in the park, with thin rough bark and small, persistent leaves. It has a Mapuche name (Co = water, Hue = place) meaning water place and grows in very wet soils. It has shallow roots that run close to the ground. It can reach 30 m height, is found on the lake shores and covers the low areas of the woods. It grows on the mountainsides up to 1,000 m altitudel.

LENGA (Nothofagus pumilio):this tree is part of the fagaceae family. It is a large tree of 30 m height, found on the high parts of the slopes. From 1,400 m altitude upwards it adopts a stunted bushlike shape. Its leaves have lobular edges. During the fall they turn reddish. The Nothofagus species stands best the cold weather.

MAITEN (Mavtenus boaria):It is from the celastraceae family. It is an elegant tree, with evergreen foliage, grayish bark and pendent branches. It shows a green top and alternately placed thinly serrated lanced leaves with yellowish flowers. The trunk often reaches 15 to 20 m height and 30 to 40 cm thickness. It inhabits wet areas.

NOTRO or CIRUELILLO (Embothrium coccineum):From the proteaceous family, it is a very thickly branched, short tree, with a smooth bark, straight trunk, and deciduous dark green leaves with soft edges. It grows in sandy, wet places and there are a lot of them showing of in the central area of the park. Its wood is very elegant, with a beautiful grain, and is broadly used in cabinetmaking. It has long flowers of a bright red color, forming stunning bunches. It flowers in November and December.

IRE (Nothofagus antarctica):From the fagaceae family, it is a tree that can reach a maximum height of 15 m. It prefers the low areas, especially at river edges, but also grows on higher places, where it becomes stunted. Leaves are ovaloids, unevenly serrated or somewhat lobular at the edges.

PEHUEN (Araucaria araucana):From the araucariaceae family, this is one of the strangest-looking and most attractive trees in Lann National Park. It reaches 30 m height, and its trunk has a thick and rough bark that flakes off. Its leaves are coriaceous and pointed. Its seeds are wealthy in carbohydrates and proteins. This is a native species to Lann National Park that has been artificially introduced in Nahuel Huapi National Park.

BUSHES
In Bariloche there are also woody bushes, whose height rarely surpasses 6 to 7 m. The most usual are: palo piche, calafate, cichay, chacay, cotro, caqui, etc. Both the Arrayn and the Notro may turn into bushes, depending on ecological conditions.

COLIHUE (Chusquea culeou):This is a rhizomatous and woody grass species that can reach 4 to 6 m tall, forming thick canes. Its leaves are lanced and hard. The fruit is a caryopsis. The Colihue is perennial, but when it produces its flowers and fruits it simply dies. It reproduces by means of seeds and rhizomes. It is a commonly found species in the Andean-Patagonian region.

ROSA MOSQUETA (MUSK ROSE):This is a bush (Rosa eglanteria) that originally came from Europe, but is now widespread in all the Andean-Patagonian zone, growing in abundance in Lann, Nahuel Huapi, Los Alerces and Puelo National Parks. As a matter of "domestic" interest, it can be mentioned that almost every home in Bariloche consumes some product derived from the Rosa Mosqueta: jam, tea, oil or cosmetics. On the other hand, many rosebushes seen in the gardens have been grafted on a root of the Rosa Mosqueta.

ORNAMENTAL BUSHES

TAlQUE:This is a bush with 0.80 to 2 m height. It has coriaceous leaves and tube-shaped flowers of a bright red and yellow color. It is seen in the National Parks, mainly at Lann and Nahuel Huapi. On the way to Mt Tronador, before getting to Ventisquero Negro, to the right of the road, there are some of these bushes, and if you are lucky to see one in full bloom you will never forget its beauty. It is often seen on the way to Puerto Blest - Fras Lagoon.

CHILCO (Fuchsia magellnica):It is often found near brooks or falls. It is a species brought from the area of the Andean-Patagonian woods. Its flowers hang with red sepals and purplish petals. Its flowers can be admired on every tourist trip and tour during summer.

PAIL (Buddleja globosa hope):It is a bush of 2 to 4 m height. Its leaves are bright green at the top and of a lighter color at the bottom. Its flowers are small with a balloon-like shape, bright yellow and agreeably scented. This species is from the Andean sierras of Peru. In Argentina and Chile it is called Matico or Pail, the latter name being used in Patagonia.

MUTISIA:During January and February this plant can be seen climbing bushes and trees. It is a beautiful creeper that creeps with tendrils, has bright orange flowers. It is found in Lann, Los Alerces and Nahuel Huapi Parks. The flowers should not be touched, to avoid any damage to the specimen.