Habitus
Cactus grower terms
(From Latin habitus - appearance, outward aspect) the external appearance of an organism, the natural form of a plant.
Glossary of terms
A reference section with categories and short explanations.
Halophyte
Cactus grower terms
(From Greek hals - salt and phyton - plant) - a plant that grows on highly saline soils.
Heliophobes
Cactus grower terms
Plants that prefer minimal sunlight.
Heliophytes
Cactus grower terms
Plants that prefer maximum sunlight.
Helminthosporiosis
Cactus grower terms
Fungal disease of cacti.
Heredity
Cactus grower terms
The property of organisms that ensures material and functional continuity from parents to offspring.
High-mountain plants
Cactus grower terms
Plants of high mountains.
Hilum
Cactus grower terms
(From Latin hilum - small thing) - the scar remaining on the seed after its separation from the funiculus.
Hilum
Cactus grower terms
The point of attachment of the seed in the fruit.
Holotype
Cactus grower terms
A specimen of a plant that the author used as the nomenclatural type. If the author who described the taxon did not designate a holotype, or if the holotype was lost or destroyed, a lectotype or neotype may be designated as a replacement.
Hormones
Cactus grower terms
(From Greek hormao - I set in motion, I stimulate) biologically active substances produced by clusters of specialized plant cells and exerting targeted action on other organs and tissues. Under the control of hormones, all stages of an org…
Humus
Cactus grower terms
High-molecular-weight, dark-colored organic substances of the soil formed from the products of decomposition of plant and animal residues — decomposed organic remains. It is the main component determining soil fertility.
Humus components
Cactus grower terms
Soil fractions of the substrate of natural origin (leaf mould, turf soil, loam) containing humus
Hybrid
Cactus grower terms
(From Latin hybrida, hibrida — mixture) an organism obtained as a result of combining the genetic (hereditary) information of genotypically different (non-identical) organisms.
Hybrid plants
Cactus grower terms
Plants produced by hybridization.
Hybridization
Cactus grower terms
Crossing by pollination of genetically different parental forms of organisms to obtain offspring possessing mixed characteristics of the parental pair; the process of obtaining offspring (hybrids) from dissimilar parents.
Hydroponics
Cactus grower terms
Cultivation of plants without soil on artificial media and in nutrient solutions, including purely water culture.
Hygroscopicity
Cactus grower terms
The ability to absorb and retain water.
Hypocotyl
Cactus grower terms
The hypocotyl is the part of a seedling between the radicle and the cotyledons.
Hypocotyl
Cactus grower terms
Part of the plant located below the cotyledons.