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Dictionary: BOTANICAL & TECHNICAL TERMINOLOGY
Glossary of terms beginning with D

CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.

 
 
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

D

Damp [ Horticulture ]

Damping off [ Phytopathology ]

Date of collection [ Taxonomy ]

Date of publication [ Taxonomy ]

Daughter plant [ Botany ]

Day [ Biology - Physiology - Climatology ]

De- [ Prefix ]

Death [ Biology ]

Decapitation [ Horticulture -  Physiology]

Decay [ Biology ]

Deciduous [ Botany ]

Decomposer [ Ecology ]

Decumbent [ Botany ]

Decurved [ Botany ]

Defasciation [ Botany ]

Definition [ Taxonomy ]

Deflexed [ Botany ]

Defoliation [ Botany - Agronomy - Horticulture ]

Degrafting  [ Horticulture ]

Degree Celsius ( °C) [ Unit of measure ]

Dehiscence - Dehiscent  [ Botany ]

Dehydration  [ Botany ]

Deltoid  [ Botany ]

Dendritic [ Botany ]

Densecluster [ Botany ]

Dentate [ Botany ]

Depigmentation [ Botany ]

Deposition [ Meteorology - Physics ]

Depressed [ Botany ]

Derma - Dermal [ Botany ]

Descendant [ Taxonomy ]

Description [ Taxonomy ]

Desert [ Ecology ]

Desert-grassland [ Ecology ]

Desiccation [ Botany ]

Designation  [ Taxonomy ]

Detachable plant part [ Botany ]

Determinate growth [ Botany ]

Determinate inflorescence [ Botany ]

Deterrence - Deterrent [ Biology - Horticulture - Phytopathology ]

Detrimental [ Biology - Horticulture - Phytopathology ]

Development  [ Botany - Biology ]

Dew [ Meteorology ]

Dew point [ Meteorology - Physics ]

Di- [ Prefix ]

Diagnosis [ Botany ]

Diaphanous [ Botany ]

Dichotomy [ Botany - Biology - Taxonomy]

Dicotyledonae (also Dicotyledon or Dicots) [ Botany ]

Differentiated [ Botany - Biology ]

Diffuse [ Botany ]

Diffusion [ Ecology - Biology - Chemistry - Physics ]

Digestive juices [ Botany ]

Dilution [ Chemistry ]

Dimorphism [ Botany - Biology]

Dioecious [ Botany - Biology ]

Diploid [ Botany ]

Diptera - Dipterans [ Entomology ]

Direct light [ Horticulture ]

Discharge dispersal   [ Botany ]

Discoid - Discoidal [ Botany ]

Discoloration [ Botany ]

Discolorous [ Botany ]

Disease [ Botany - Phytopathology ]

Disease resistance[ Botany - Biology - Genetics - Phytopathology ]

Disintegration  [ Biology - Phytopathology ]

Disorder  [ Phytopathology ]

Dispersal  [ Biology - Ecology - Botany]

Dissemination [ Biology - Ecology - Botany]

Distichous [Botany - Habit of growth ]

Distribution [ Biology ]

Disturbance [ Biology - Physiology ]

Ditch [ Agronomy - Horticulture ]

Diurnal [ Botany ]

Diversity [ Genetics ]

Division [ Taxonomy - Cell biology - Hoticulture ]

DNA [ Genetics ]

Domain [ Botany ]

Domestication [ Biology - Botany ]

Dominant  [ Genetics ]

Dominant species [ Ecology - Botany ]

Donor [ Biology - Botany ]

Dormancy - Dormant [ Botany - Physiology ]

Dormant season [ Botany - Ecology - Physiology ]

Dorsal [ Botany ]

Dorsifixed [ Botany ]

Double compound (Syn:Bipinnate) [ Botany ] 

Double flowering  [ Botany - Horticulture ] 

Doubly serrate [ Botany ]

Drainage [ Horticulture ]

Drainage hole [ Horticulture ]

Draining soil [ Horticulture - Ecology ]

Drip tip [ Botany ]

Drought  [ Meteorology - Ecology ]

Drought tolerant [ Botany ]

Drupe [ Botany ]

Drupelet [ Botany ]

Dry [ Botany - Meteorology - Ecology - Horticulture]

Dry fruit [ Botany ]

Dry season [ Ecology - Meteorology ]

Dry weight [ Botany - Biolgy ]

Duct [ Botany ]

Dwarf - Dwarfing [ Botany - Horticulture - Phytopathology ]

 

 


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Holdfast roots  [ Botany  ]

Dictionary of botanic terminology - index of names

 
     
  Some species of climbing plants develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place.  
     
Climbing plants, like the poison ivy (Toxicodendron radicans), Boston ivy (Parthenocissus tricuspidata), and trumpet creeper (Campsis radicans),  develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the Holdfast roots die at the end of the first season, but in some species they are perennial. In the tropics some of the large climbing plants have hold-fast roots by which they attach themselves, and long, cord-like roots that extend downward through the air and may lengthen and branch for several years until they strike the soil and become absorbent roots.

Major references and further lectures:
1) E. N. Transeau “General Botany” Discovery Publishing House, 1994
     

 

 

 

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