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The usual medium for the sowing of orchids in artificial conditions is agar gel combined with a carbohydrate energy source. The carbohydrate source can be combinations of discrete sugars or can be derived from other sources such as banana , pineapple , peach , or even tomato puree or coconut water .
The plants are fungal magnets in habitat and in cultivation and tend to culture mychorrhizal fungi they pick up from their environment since this species is a trash basket orchid that in nature creates a network of interlocked airborne roots to collect leaf litter, they have a tendency to rapidly break down their growing medium more so than ...
Common names include ground-rooting epidendrum, fire-star orchid, crucifix orchid, [1] rainbow orchid, and reed-stem epidendrum. [ 2 ] The diagnostic characteristic of E. radicans is its tendency to sprout roots all along the length of the stem; other crucifix orchids only produce roots near the base. [ 3 ]
Orchid seeds are very small (0.35mm to 1.50mm long), spindle-shaped, and have an opening at the pointed end. [5] Each seed has an embryo that is undifferentiated and lacks root and shoot meristems. [3] An orchid seed does not have enough nutritional support to grow on its own, and lacks endosperm. [2]
Semi-Hydroponics (Semi-Hydro or S/H) was the first passive hydroponic technique utilized for orchids, originating in the early 1990s, using Lightweight Expanded Clay Aggregate (LECA) as a medium in solid-bottomed containers, into which one or two, small-diameter holes were placed in the sidewall, setting the depth of the internal reservoir.
Most orchids have waxy pollinia. These are connected to one or two elongate stipes, [clarification needed] [3] which in turn are attached to a sticky viscidium, a disc-shaped structure that sticks to a visiting insect. [2] Some orchid genera have mealy pollinia. These are tapering into a caudicle (stalk), attached to the viscidium.
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