Calanthe
Calanthe is a popular genus of some 150 terrestrial species spreaded throughout tropical and subtropical Africa, Asia and Australia. The genus divide into two main groups: deciduous and evergreen. Deciduous calanthes genus  produced large silvery green pseudobulbs topped with broadly oval, short lived leaves in summer. While resting, the leafless pseudobulbs produce an autumn flower spike up to 60 cm with a cascade of wonderfully soft blooms and colored white, pink or red with a contrasting lip. Evergreen calanthes grow in similar conditions but do not require a definite period of rest.
This is a genus of seventeen species which can be found throughout much of the lowland American tropics. They have a single apical subterete leaf on a pencil like pseudobulb, the flowers are long lasting and highly fragrant at night.

One of the most widely cultivated species. It is found on limestone in Burma, Thailand and Malaysia. Calanthe vestita is deciduous and should receive a rest period. The inflorescence is about a meter tall with long lived, white flowers. Fall to winter bloomer, intermediate condition.

Catasetum
Catasetums are among the easiest of all orchid genera to grow and bloom. Some 70 species are known, ranging from the West Indies to Central America and to South America. All species have fleshy pseudobulbs with 8 to 12 leaves. The flower stem arise from the base of the pseudobulbs. Plants can produce inflorescences bearing either male or female flowers. Plants will produce female flowers under bright light and male flowers under moderate shade.

Native to Peru, Ecuador, this species produces many flowered racemes when new growth are mature. Male flowers sepals and petals are dark brown and the heart shaped lip yellow. Intermediate to warm growers.

Cattleya
About 60 species distributed thoughout the mainland tropical America. Divided into two groups: unifoliate, with a single leaf, large flower; and bifoliate, with a pair of short leaves and smaller, heavier flowers. Most of the species can be cultivated under intermediate conditions with abundant water provided during the growing season and less water while resting. They need plenty of light but avoid direct sun.

This is a bifoliate species. The erect inflorescence has 10 to 15 small orange flowers and the lip has flecks of red toward the center. Spring bloomer.

Another bifoliate, the inflorescence produce, in late fall to winter, from 5 to 25 magenta pink flowers of 5 cm in diameter.

This is a dwarf hybrid which produce beautiful light pink flower, the lip is bright yellow with some red spot in the middle. Very pleasing fragrance. The flower are quite large for the size of the plant.

A lovely dwarf hybrid. Produce many red flowers and yellow center per inflorescence. Intermediate condition, spring bloomer. The plants are easy to grow and free-flowering, blooming 2 to 3 times per year.
 

This is a hybrid with a sweet fragrance. Petals and sepals are dark lavender, and the lip pale yellow. Fall bloomer. intermediate condition.

A cross between Slc. Tangerine Jewel and Bl. Richard Mueller. Compact, easy growing under intermediate conditions. Beautiful clusters of star shaped yellow with red spots flowers. Spring bloomer. A compact grower, this plant will grow to specimen size quickly and can bloom 2 to 3 times per year.
 

Chamaeangis
There are about fifteen species of this genus distributed througout Africa, Madagascar and the Mascarene Islands. The species are medium sized monopodials with very short stems, two to six oval leaves and dense spikes of miniature flowers.

Chamaeangis harriotiana grows 4 to 5 cm tall, with four to seven leaves. The flowers stems can reach about 20 cm long. The tiny 4 mm flowers are orange with a fainted fragrant. Intermediate condition, it is best mounted on cork slabs as the flowers stems are pendant. Spring flowering.

Chiloschista
Chilochista is a genus of leafless orchids with about twenty epiphytic species native to Southeast Asia in Burma, India, Thailand, Indonesia and east to tropical Australia. These plants are easy to grow and prefer cultivation on cork slabs.

This plant can bloom at any time of the year, but mostly in spring, and summer in the Northern Hemisphere. The many roots clinging to cork or simply out in the air, act as the leaves and provide the necessary photosynthesis for the plant. Occasionally there will be one or two very tiny leaves in the center of the growth. The flowers emerge along the sides of the center of the growth and extend 7 to 12 cm in length. The flowers are colored in green and yellow. They are very fragrant and last two to three months.

The name tag on this plant was chiloschista viridiflava. After a search over the internet. I have the feeling that this plant resemble more like chiloschista lunifera. The flower spikes seems to take forever to develop. The brown to red wine with pale yellow border flowers are about 1 cm in diameter with a vanilla fragrant in day time. The flowers last over two month. Spring flowering.

Christensonia vietnamica
A newly discovered genus and only species that was named in 1993 and is found in Vietnam as a warm growing monopodial epiphyte that blooms on a axillary, short, few flowered inflorescence occurring in the late summer

This species is about the size of an ascocentrum and grows under the same conditions, intermediate to warm temperatures with a good light source. Likes lots of water and a humid environment. The flower stems emerge from the axil of the leave, bearing 3 to 5 spurred green flowers with a white lip.

Cochleanthes
Fifteen species are found from Costa Rica to Peru. The narrow leaves form a fanlike. The single flowered inflorescences are produced from the axil of the leaf sheaths. Flowering occurs in succession throughout most of the year. Cultivation under intermediate conditions and never be allowed to dry out completely.

Native to the Amazon mostly in Peru and Ecuador. This plant has no pseudobulbs for storage and require that moisture be available at the roots at all times. The flowers are large, white, and the lip has some blue veins in it. Flowering season can be at any time of the year, usually begins in the fall and continues on and off through spring.
 

Charming hybrid, the flower are white with a soft pink lip. Slightly fragrance. The flowering season can be at any time of the year.  

Coelogyne
More than one hundred species of this genus distributed from India through China and Indonesia to the Fiji Islands. Racemes of often very showy flowers arise from the apex of the pseudobulb. Provide bright light but avoid direct sun  which can easily burn the leaves. They are easy to grow and many species thrive in cool conditions, requiring a warmer environment only during their active growing season.

Found in the Philippines. This epiphyte blooms in the spring with several flowers per inflorescent. This species does well mounted or in a pot with tree fern chunks and given year round water and fertilizer as well as indirect light and warm to cool temperatures.

Warm growing species from Vietnam. It is easy to grow. This plant prefers medium light and flowers in the late spring to early summer months with large 16 cm flowers. Flowers are tan with a white lip. The lip has brown raised keels running along it. Flowers are waxy and long lasting with a sweet  fragrant.
 

From Burma it is a relatively small sympodial epiphytes. The arching to pendent inflorescence  produce many fragrant and long lasting light green and black streaked lip flowers. Spring bloomer.