Caryoteae - Arenga (or Wallichia)
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
Caryoteae Drude.
informative descriptor
- general stem pattern (ex-von Mohl's classification) : Mauritia-Type
- shape of fibrous part in transverse section : Sagittata ; Reniforma to Cordata - Complanata
- cortex : very thin
- superficial protective layer (sub-epidermal) : permanent epidermis ; suberization and sclerosis of the existing ground parenchyma
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : present ; absent
- fibrous bundles in central cylinder : present
- fibrous part adjacent to the xylem : absent
- little fibrous vascular bundles (bridges) : absent (poorly developed)
- number of phloem strand : one strand throughout the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- radiating parenchyma : present ; absent
- ground parenchyma of the central cylinder : rod-like cells (length > 200 µm; length / width > (3)–5) and more or less regular and large meshwork (lacunae > 250 µm) ; huge cells (∅ > 150 µm) [potential few and irregular lacunae] ; appendicular parenchyma connecting fvb
- ground parenchyma sustained growth : present (Type B)
- phytoliths : trapeziform to rondel (ex hat shaped) ; combined
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; 1 in the the subcortical zone and the zone of transition AND 2 in the central zone
- tabular parenchyma : absent
- end wall slope : oblique ; slightly oblique
- specialisation value : 1 to ≤ 2 vessel-parenchyma pits">[2] multiple perforation plates with "narrow" perforations that span >1 to ≤ 2 vessel-parenchyma pits ; 2 to ≤ 5 vessel-parenchyma pits">[3] multiple perforation plates with "medium size" perforations that span >2 to ≤ 5 vessel-parenchyma pits ; 5 vessel-parenchyma pits, or with ≤ 3 bars">[4] multiple perforation plates with "wide" perforations that span >5 vessel-parenchyma pits, or with ≤ 3 bars ; [5] mixture of multiples perforation plates (as in #4) and simple perforation plates
- multicellular epidermal hair : present
- epidermal cells : cone shaped
- wide metaxylem element : present
- fibrous part centrifugal differentiation : present
- metaphloem sieve plate : compound
- phytoliths distribution in central cylinder : largely restricted to the fvb of the subcortical zone in contact with the cortex
- identification within "subfamily" or "tribe" : in all palm family ; subfamily Coryphoideae ; without Arecoideae
cortex
central cylinder
- fibrous bundles in central cylinder : present
- shape of fibrous part in transverse section : Sagittata ; Reniforma to Cordata - Complanata
- little fibrous vascular bundles (bridges) : absent (poorly developed)
- radiating parenchyma : present ; absent
- tabular parenchyma : absent
- paravascular parenchyma : developed
- ground parenchyma of the central cylinder : rod-like cells (length > 200 µm; length / width > (3)–5) and more or less regular and large meshwork (lacunae > 250 µm) ; huge cells (∅ > 150 µm) [potential few and irregular lacunae] ; appendicular parenchyma connecting fvb
- ground parenchyma sustained growth : present (Type B)
- superficial protective layer (sub-epidermal) : permanent epidermis ; suberization and sclerosis of the existing ground parenchyma
- general stem pattern (ex-von Mohl's classification) : Mauritia-Type
- median sinus : rounded ; angular
- auricular lobe : rounded
- auricular sinus : angular ; absent only in the central zone
- vascular zone position : excluded from the auricular lobes only in the central zone
- fibrous part adjacent to the xylem : absent
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; 1 in the the subcortical zone and the zone of transition AND 2 in the central zone
- number of phloem strand : one strand throughout the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- phytoliths : trapeziform to rondel (ex hat shaped) ; combined
- Tomlinson's end wall type : moderately specialized
- end wall slope : oblique ; slightly oblique
- range of slope index (min_m_max) : 3 – 3,76 – 4,33
- specialisation value : 1 to ≤ 2 vessel-parenchyma pits">[2] multiple perforation plates with "narrow" perforations that span >1 to ≤ 2 vessel-parenchyma pits ; 2 to ≤ 5 vessel-parenchyma pits">[3] multiple perforation plates with "medium size" perforations that span >2 to ≤ 5 vessel-parenchyma pits ; 5 vessel-parenchyma pits, or with ≤ 3 bars">[4] multiple perforation plates with "wide" perforations that span >5 vessel-parenchyma pits, or with ≤ 3 bars ; [5] mixture of multiples perforation plates (as in #4) and simple perforation plates
- fibrous part centrifugal differentiation : present
- wide metaxylem element : present
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : present ; absent
- metaphloem sieve plate : compound
- phytoliths distribution in central cylinder : largely restricted to the fvb of the subcortical zone in contact with the cortex
fibrous vascular bundle
- shape of fibrous part in transverse section : Sagittata ; Reniforma to Cordata - Complanata
- fibrous part adjacent to the xylem : absent
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; 1 in the the subcortical zone and the zone of transition AND 2 in the central zone
- number of phloem strand : one strand throughout the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- paravascular parenchyma : developed
- median sinus : rounded ; angular
- auricular lobe : rounded
- auricular sinus : angular ; absent only in the central zone
- vascular zone position : excluded from the auricular lobes only in the central zone
- tabular parenchyma : absent
- Tomlinson's end wall type : moderately specialized
- end wall slope : oblique ; slightly oblique
- range of slope index (min_m_max) : 3 – 3,76 – 4,33
- specialisation value : 1 to ≤ 2 vessel-parenchyma pits">[2] multiple perforation plates with "narrow" perforations that span >1 to ≤ 2 vessel-parenchyma pits ; 2 to ≤ 5 vessel-parenchyma pits">[3] multiple perforation plates with "medium size" perforations that span >2 to ≤ 5 vessel-parenchyma pits ; 5 vessel-parenchyma pits, or with ≤ 3 bars">[4] multiple perforation plates with "wide" perforations that span >5 vessel-parenchyma pits, or with ≤ 3 bars ; [5] mixture of multiples perforation plates (as in #4) and simple perforation plates
- metaphloem sieve plate : compound
- wide metaxylem element : present
- fibrous part centrifugal differentiation : present
- radiating parenchyma : present ; absent
ground parenchyma
- ground parenchyma of the central cylinder : rod-like cells (length > 200 µm; length / width > (3)–5) and more or less regular and large meshwork (lacunae > 250 µm) ; huge cells (∅ > 150 µm) [potential few and irregular lacunae] ; appendicular parenchyma connecting fvb
- ground parenchyma sustained growth : present (Type B)
- superficial protective layer (sub-epidermal) : permanent epidermis ; suberization and sclerosis of the existing ground parenchyma
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : present ; absent