Which large orchid is typically known for growing on a single stem?

The large orchid typically known for growing on a single stem is the Cattleya. This orchid type is characterized by its robust, upright growth habit. Cattleyas generally produce large, showy flowers from a single, thick stem, making them popular in floral arrangements and decorative displays. Their strength and size differentiate them from other types of orchids, which may exhibit more branching or varied growth patterns.

In contrast, Phalaenopsis orchids often have several flowers that emerge from a single stem, but the plants themselves can have multiple branching stems. Cymbidiums typically grow in clusters and have multiple flower spikes extending from a single bulb. Dendrobiums also tend to grow with multiple canes or stems, producing flowers along these canes rather than primarily from a single stem. Understanding these differences is key in identifying various orchid types and their growth habits.