''Archeria traversii'' is a
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of shrub in the family
Ericaceae
The Ericaceae () are a Family (biology), family of flowering plants, commonly known as the heath or heather family, found most commonly in acidic and infertile growing conditions. The family is large, with about 4,250 known species spread acros ...
.
Distribution
''Archeria traversii'' is scattered locally across southern
New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
(the
South Island
The South Island ( , 'the waters of Pounamu, Greenstone') is the largest of the three major islands of New Zealand by surface area, the others being the smaller but more populous North Island and Stewart Island. It is bordered to the north by ...
and
Stewart Island
Stewart Island (, ' glowing skies', officially Stewart Island / Rakiura, formerly New Leinster) is New Zealand's third-largest island, located south of the South Island, across Foveaux Strait.
It is a roughly triangular island with a la ...
), where it is endemic.
[Allan, H.H. 1961. Flora of New Zealand. Volume I: Indigenous Tracheophyta - Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledons. Government Printer, Wellington.] It is notably absent from
Marlborough
Marlborough or the Marlborough may refer to:
Places Australia
* Marlborough, Queensland
* Principality of Marlborough, a short-lived micronation in 1993
* Marlborough Highway, Tasmania; Malborough was an historic name for the place at the sou ...
and much of the eastern South Island.
Ecology
It is largely found in
shrubland
Shrubland, scrubland, scrub, brush, or bush is a plant community characterized by vegetation dominance (ecology), dominated by shrubs, often also including grasses, herbaceous plant, herbs, and geophytes. Shrubland may either occur naturally o ...
s and
conifer
Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ...
-broadleaf forests, at
lowland
Upland and lowland are conditional descriptions of a plain based on elevation above sea level. In studies of the ecology of freshwater rivers, habitats are classified as upland or lowland.
Definitions
Upland and lowland are portions of a ...
to
montane
Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures lapse rate, fall as elevation increases, causing the ecosystem to stratify. This stratification is ...
altitude
Altitude is a distance measurement, usually in the vertical or "up" direction, between a reference datum (geodesy), datum and a point or object. The exact definition and reference datum varies according to the context (e.g., aviation, geometr ...
s. Flowering takes place from December to February, and fruiting from February to April.
[Smith-Dodsworth, J.C. 1991. New Zealand Native Shrubs and Climbers. David Bateman Ltd, Auckland.]
Morphology
; Habit: An erect
shrub
A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple ...
, up to 5 m tall but often much shorter. It has spreading to ascending branches, with leaves that are fairly evenly spaced (rather than clustered, like
''A. racemosa''). Multiple trunks are often formed, and can be highly twisted, rough, and covered in
epiphytic
An epiphyte is a plant or plant-like organism that grows on the surface of another plant and derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphyt ...
bryophyte
Bryophytes () are a group of embryophyte, land plants (embryophytes), sometimes treated as a taxonomic Division (taxonomy), division referred to as Bryophyta ''Sensu#Common qualifiers, sensu lato'', that contains three groups of non-vascular pla ...
s. The bark is dark brown in colour, with branchlets that are light reddish when young and light brown when mature.
;Leaves: Narrow lanceolate leaves, becoming glabrous and leathery. Dark green on the adaxial side, while abaxially they tend to be much paler. The leaf apices are acute to subacute, and sometimes reddish in colour. The base of the leaf is rigid and nearly
sessile
Sessility, or sessile, may refer to:
* Sessility (motility), organisms which are not able to move about
* Sessility (botany), flowers or leaves that grow directly from the stem or peduncle of a plant
* Sessility (medicine), tumors and polyps that ...
, attached to the stem with a short and flat
petiole
Petiole may refer to:
*Petiole (botany), the stalk of a leaf, attaching the blade to the stem
*Petiole (insect anatomy)
In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...
. Dimensions are roughly 7–12 mm long and 2–4 mm wide. Leaf margins are entire, minutely ciliolate, and flat to slightly recurved. Prominent
venation
Venation may refer to:
* Venation (botany), the arrangement of veins in leaves
* Wing venation, the arrangement of veins in insect wings
See also
*
* Vernation
Vernation or leafing is the formation of new leaves or fronds. In plant anatomy, it ...
can often be seen on the