Wednesday, May 25, 2016

Laelia sincorana

Laelia sincorana, now reclassified as Cattleya sincorana is one of the smaller species in either Laelia or Cattleya and a real jewel.  It is from Brazil and blooms here in the spring.  The round pseudobulbs with their leaves are 10 cm tall and the flowers the same size or a bit larger.  The flower spikes emerge from within the leaves just as the leaves begin to unfold and the flowers are usually born singly, though occasionally I get two flowers from a flower spike.  I grow the plant with the highest light I can give it in cool to intermediate temperatures and mounted on a piece of tree branch.

Wednesday, May 18, 2016

Dendrobium malvicolor

This charming little species is from Sumatra.  It is only 10 cm tall with clusters of 3 cm flowers that appear to be white but have a pink blush.  Because the flowers are pendant, the fact that anther cap is purple is not evident either except on closer inspection.  The plant is quite temperature tolerant and blooms faithfully for me every spring on the older growths.  The growths are on a wiry "stem" with a fattened end that holds several small leaves.

Wednesday, May 11, 2016

Dendrobium seranicum 'Brendan'

It seems that all I've been posting recently are Dendrobiums, but in any case, here's another from the island of Seram in the Moluccas, Dendrobium seranicum.  The 3 cm flowers come in pairs on the 8cm growths with their narrow channeled leaves.  The plant belongs to the Oxyglossum section of the genus, Dendrobium and is one of the species in that section that is not from the island of New Guinea.

Monday, May 2, 2016

Dendrobium sulphureum

Dendrobium sulphureum is a high-altitude species from New Guinea in the Oxyglossum section of the genus.  Like most of the other plants in the section, it needs cool temperatures, good light and humidity, and also like the species in the section has fan-shaped flowers in bright but unusual color combinations, in this case, pale yellow flowers with a dark green column and an orange mid-lobe.  The canes are 13 cm long and the 3 cm flowers come two or three at time and last many months.
Even after the leaves fall from the canes they continue to produce flowers.

Tuesday, April 26, 2016

Dendrobium Flower Baby

Dendrobium Flower Baby is a hybrid of Dendrobium cuthbertsonii with Dendrobium victoria-reginae, a much larger species with thin semi-pendant canes.  In color and patterning the flowers resemble the larger parent but the plant size has been much reduced and the canes have become thick upright pseudobulbs.  The plant is 9 cm tall and the flowers 3 cm.

Friday, April 22, 2016

Dendrobium limpidum 'Ashley'

Dendrobium limpidum is from New Guinea and belongs to the Pedilonum section of Dendrobium.  This group of Dendrobiums have arching or pendant canes and most of them are quite large.  This plant is one of the smallest in the group.  It is considered by some to be the same plant as Dendrobium dichaeoides and  the plants do resemble another orchid genus named Dichaea with their closely set alternating leaves.  The canes are about 10 cm in length and produce clusters of rather small flowers that impress more by their bright color and number than by their individual beauty.  The flowers are less than 2 cm but come in clusters of up to 15 flowers.  Like the other flowers in the Pedilonum section the flowers tend to be more or less tubular.  In this case the flowers are not only tubular but do not open very far and have a lip that curls up to block most of the open end of the flowers.  This can be seen in the close-up photos.  One very nice thing about this species is that the older canes continue to produce flowers for several years, though the new canes do not bloom the first year.  The older canes eventually lose their leaves but will even then continue to produce flowers.

Wednesday, April 20, 2016

Porroglossum hirtzii

Porroglossum hirtzii is from Ecuador (Alexander Hirtz is a well known German orchid collector in Ecuador).  The plant is 4 cm tall and the leaves are a dark green with a lightly pebbled surface.  The flowers spikes bear only one flower and are 10 cm long and tend to be pendant.  The flowers are 1.5 cm long and have the typical hinged lip of this genus, a lip that swings up when the flower is disturbed by a pollinating insect, trapping the insect against the column of the flower.  Two of the last three pictures show the flowers with the lip against the column.