Friday, January 27, 2017

Dendrobium leucocyanum

Dendrobium leucocyanum is a miniature species from high altitude montane forests in New Guinea.  It is cool to cold growing and produced clusters of pale blue flowers in late winter.  The flowers are 0.4cm long and do not open very widely.  The pseudobulbs with their leaves are 2-3cm tall.  The plant blooms on the older leafless pseudobulbs. This is the second time I've had it bloom but this time with only two flowers.  I may have to try slightly lower light.

Wednesday, January 25, 2017

Lankesterella ceracifolia

This plant is tiny!  The rosette of leaves, which is itself rather unusual, is only 4 cm across and the tiny flowers are 5 mm long.  The flowers bloom three or four to a spike and bloom successively in the spring.  The species is from Argentina and Brazil and is named after a famous naturalist and orchid collector, Charles H. Lankester.

Thursday, January 19, 2017

Porroglossum tripollex

Porroglossum is a genus of miniature orchids all of which have spring-loaded moveable, insect-trapping lips.  When the flower is disturbed by a visiting insect, the lip springs up trapping the insect against the column and hopefully effecting pollination.  The genus is related to Masdevallia and includes about 50 species.

In these photos the flowers all have their insect-trapping lips in the open position, except for the flower in the last photo.  The plant is difficult to photograph with the lips open because the slightest disturbance cause the lips to snap shot.  The flowers are 1.5 cm on 6-8 flower spikes on a 3 cm plant.

This small plant is Porroglossum tripollex from Ecuador.  I have two of these, one with brown "tails" and this with yellow.  The flower looks to me like a bird's beak, but tripollex means "three thumbs," a resemblance I do not see.  It is cool to cold growing and comes from montane forests.

Wednesday, January 11, 2017

Dendrobium hasseltii

Dendrobium hasseltii is a variable species both in plant size and flower color.  My plant is very small, only 8 cm, and the 2 cm flowers have very good color.  I've found the plant difficult to bloom and this is only the second flower I've had on it.  It requires cool to cold temperatures and I am providing that, but learned recently that it likes to be dried out a bit in the winter, so I'll have to do that and see if it produces more flowers then.