The simulated growth of plants is a significant task in of systems biology and mathematical biology, which seeks to reproduce plant morphology with computer software. Electronic trees (e-trees) usually use L-systems to simulate growth. L-systems are very important in the field of complexity science and A-life. A universally accepted system for describing changes in plant morphology at the cellular or modular level has yet to be devised.  The most widely implemented tree-generating algorithms are described in the papers “Creation and Rendering of Realistic Trees”, and Real-Time Tree Rendering
‘Weeds’, generated using an L-system in 3D.
The realistic modeling of plant growth is of high value to biology, but also for computer games.
A biologist, Aristid Lindenmayer (1925–1989) worked with yeast and filamentous fungi and studied the growth patterns of various types of algae, such as the blue/green bacteria Anabaena catenula. Originally the L-systems were devised to provide a formal description of the development of such simple multicellular organisms, and to illustrate the neighbourhood relationships between plant cells. Later on, this system was extended to describe higher plants and complex branching structures. Central to L-systems, is the notion of rewriting, where the basic idea is to define complex objects by successively replacing parts of a simple object using a set of rewriting rules or productions. The rewriting can be carried out recursively. L-Systems are also closely related to Koch curves
A challenge for plant simulations is to consistently integrate environmental factors, such as surrounding plants, obstructions, water and mineral availability, and lighting conditions. is to build virtual/environments with as many parameters as computationally feasible, thereby, not only simulating the growth of the plant, but also the environment it is growing within, and, in fact, whole ecosystems. Changes in resource availability influence plant growth, which in turn results in a change of resource availability. Powerful models and powerful hardware will be necessary to effectively simulate these recursive interactions of recursive structures.
This page provides a Glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to describe plant organs and parts that can be observed with the human eye using no more than a hand held magnifying lens. These terms are used to identify and classify plants. This page is provided to help in understanding the numerous other pages describing plants by their various taxa. The accompanying page, Plant morphology provides an overview of the science of studying the external form of plants. There is also an alphabetical list, a Glossary of botanical terms, while this page deals with botanical terms in a systematic manner, with some illustrations. The internal structure is dealt with in Plant anatomy, and function in Plant physiology.
Primarily, these are terms that deal with the vascular plants (ferns, gymnosperms and angiosperms), particularly the flowering plants (Angiosperms). In contrast the non-vascular plants (Bryophytes), with their different evolutionary background, tend to have their own particular terminology. Although plant morphology (the external form) is integrated with plant anatomy (the internal form), the former which requires few tools was the basis of the taxonomic description of plants that exists today.
Since the terms used have been handed down from the earliest herbalists and botanists, as far back as Theophrastus, they are usually Greek or Latin in form. These terms have been modified and added to over the years and different authorities may not always use them in exactly the same way. This page has two parts. The first deals with general plant terms, and the second with specific plant structures or parts
Plant habit refers to the overall shape of a plant. It has a number of components such as stem length and development, branching pattern, and texture. While many plants fit easily into some main categories, such as grasses, vines, shrubs or trees, others can be more difficult to categorise. The habit of a plant provides important information about its ecology, that is how it has adapted to its environment. Each habit indicates a different adaptive ecological strategy. Habit is also associated with the development of the plant and may change as the plant grows, more properly called its growth habit. In addition to shape, habit indicates its structure, for instance whether herbaceous or woody. Each plant commences its growth as a herbaceous plant, while woody plants (such as trees, shrubs and woody vines (lianas) will gradually acquire woody (lignaceous) tissues which provide strength and protection for the vascular system. While woody plants tend to be tall and relatively long lived, herbaceous plants are shorter and seasonal, dying back at the end of their growth season. The formation of woody tissue is an example of secondary growth, a change in existing tissues, in contrast to primary growth that creates new tissues, such as the elongating tip of a plant shoot. The process of wood formation (lignification) is commonest in the Spermatophytes (seed bearing plants) and has evolved independently a number of times. The roots may also lignify, aiding in the role of supporting and anchoring tall plants, and may be part شركة كشف تسربات المياه of a descriptor of the plant’s habit.
Another plant habit refers to whether the plant possesses any specialised systems for the storage of carbohydrates or water, allowing it to renew growth after an unfavourable period. Where the amount of water stored is relatively high, the plant is referred to as a succulent. Such specialised plant parts may arise from the stems or roots. Examples include plants growing in unfavourable climates, very dry climates where storage is intermittent depending on climatic conditions, and those adapted to surviving fires that can regrow from the soil afterwards.
Some types of plant habit include