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Black rot on orchids is caused by Pythium and Phytophthora species. [1] Black rot targets a variety of orchids but Cattleya orchids are especially susceptible. [1] Pythium ultimum and Phytophthora cactorum are known to cause black rot in orchids. [1] Pythium ultimum is a pathogen that causes damping-off and root rot on plants. [2]
Why Orchid Blooms Fall Off Too Soon. Orchid blooms drop off eventually from natural causes, of course, but if the flowers are falling off prematurely, there may be a problem. 1. Sudden Temperature ...
These plants are bulbous geophytes with underground tubers or bulbs that annually produce new stems, leaves and flowers. The leaves are amplexicaul and vary from 4 to 7 per plant. The lower leaves are oblong-obovate with obtuse apex, while the upper leaves are lanceolate with acute apex. Size of leaves: width 1 to 2.5 cm, length 6 – 12 cm.
Dactylorhiza maculata, known as the heath spotted-orchid [2] or moorland spotted orchid, is an herbaceous perennial plant of the family Orchidaceae. It is widespread in mountainous regions across much of Europe from Portugal and Iceland east to Russia. It is also found in Algeria, Morocco, and western Siberia. [1] [3]
The orchid family is one of the largest flowering plant families in the world. Orchids can be found on every continent except Antarctica. Beautiful and fascinating, Orchids can grow almost ...
The Orchidoideae, or the orchidoid orchids, are a subfamily of the orchid family (Orchidaceae) that contains around 3630 species. [1] Species typically have a single ( monandrous ), fertile anther which is erect and basitonic .
Bulbophyllum is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is the largest genus in the orchid family and one of the largest genera of flowering plants with more than 2,000 species, exceeded in number only by Astragalus.
The genera Euchile, Prosthechea and Dinema were separated from Encyclia based on morphological analysis. [5] Sulpitia Raf. is a synonym of Encyclia. Encyclia can hybridize with related genera. E. tampensis is often bred for its attractive hybrids.