Orchid morphology

type of simple, dry rarely fleshy, dehiscent fruit

root which grows above the ground

either of the 2 parts of a bilabiate corolla or calyx of an orchid or Canna that serves to attract insects

In botany, a pseudobulb is a storage organ found in many epiphytic and terrestrial sympodial orchids. It is derived from a thickening of the part of a stem between leaf nodes and may be composed of just one internode or several, termed heteroblastic and homoblastic respectively. All leaves and inflorescences usually arise from this structure. Pseudobulbs formed from a single internode produce the leaves and inflorescence from the top, while those that are formed from several internodes can possess leaves along its length. The modified sheath leaves that appear at the base of a pseudobulb and o

pattern of branching, similar to dichotomous branching, characterized by branching along a stem or hyphae

A pollinium (: pollinia) is a coherent mass of pollen grains in a plant that are the product of only one anther, but are transferred, during pollination, as a single unit. This is regularly seen in orchids, which have a complex pollination system, and many species of milkweeds (Asclepiadoideae). Usage of the term differs: in some orchids two masses of pollen are well attached to one another, but in other orchids there are two halves (with two separate viscidia) each of which is sometimes referred to as a pollinium.

reproductive structure that can be found in several plant families

thumb| Phalaenopsis orchid showing monopodial form of growth Vascular plants with monopodial growth habits grow upward from a single point. They add leaves to the apex each year and the stem grows longer accordingly. The word Monopodial is derived from Greek , one and , "foot", in reference to the fact that monopodial plants have a single trunk or stem.

in plants, stalk that supports some other structure

Acotyledon is used to refer to seed plants or spermatophytes that lack cotyledons, such as orchids and dodder. Orchid seeds are tiny with underdeveloped embryos. They depend on mycorrhizal fungi for their early nutrition so are myco-heterotrophs at that stage.

symbiotic relationship between orchids and some fungi