''Rhododendron'' subsection ''Brachycalyx'' is a subsection of the

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

Rhododendron ''Rhododendron'' (; : ''rhododendra'') is a very large genus of about 1,024 species of woody plants in the Ericaceae, heath family (Ericaceae). They can be either evergreen or deciduous. Most species are native to eastern Asia and the Himalayan ...

'', in section '' Tsutsusi'',

subgenus In biology, a subgenus ( subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between the ge ...

'' Azaleastrum'', consisting of fifteen species of

azaleas Azaleas ( ) are flowering shrubs in the genus ''Rhododendron'', particularly the former sections '' Tsutsusi'' (evergreen) and '' Pentanthera'' (deciduous). Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and Oc ...

from

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

Description

Leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...

, pseudoverticillate, rhombic, crowded at the

shoot apex In cell biology, the meristem is a structure composed of specialized tissue found in plants, consisting of stem cells, known as meristematic cells, which are undifferentiated cells capable of continuous cellular division. These meristematic ce ...

and monomorphic, hairs usually confined to axils.

Taxonomy

The section ''Brachcalyx'' was first proposed by JC Tate based on the Chinese '' Rhododendron farrerae'', and described by Robert Sweet in 1831, in ''The British Flower Garden''. Species;

References

Bibliography

Loretta Goetsch, Andrew Eckert and Benjamin Hall. Classification of genus ''Rhododendron''. 2005 Annual ARS Convention
* * * Pojarkova AI, in Schischkin & Bobrov, Flora URSS. 18: 55. 1952. * * * * *

External links

Flora of China

Flora Republica Popularis Sinicae

Tropicos
see als
Section Tsutsusi
* Brachycalyx Plant subsections {{Ericaceae-stub