Trachycarpeae - Rhapidinae - Rhapis
Trachycarpeae - Rhapidinae - Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
Rhapis L.f. ex Aiton
informative descriptor
- general stem pattern (ex-von Mohl's classification) : Geonoma-Type
- shape of fibrous part in transverse section : Reniforma to Cordata - Complanata
- cortex : very thin
- superficial protective layer (sub-epidermal) : permanent epidermis
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : absent
- fibrous bundles in central cylinder : present
- fibrous part adjacent to the xylem : present (often only in the central zone)
- little fibrous vascular bundles (bridges) : absent (poorly developed)
- number of phloem strand : one strand in the subcortical and transitional zones and two in the central zone of the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- radiating parenchyma : absent
- ground parenchyma of the central cylinder : spheroid to slightly elongated (length / width < 3–4) cells (∅ < 150 µm) and compact [sometimes few and little lacunae in old stems
- ground parenchyma sustained growth : absent (Type A)
- phytoliths : globular echinate to granulate
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; mostly 2 (3-4)
- tabular parenchyma : absent
- end wall slope : oblique ; slightly oblique
- specialisation value : 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 ; [6] simple perforation plate only
- multicellular epidermal hair : absent
- epidermal cells : erect (radially elongate) ; spheroid to cubical
- wide metaxylem element : present
- fibrous part centrifugal differentiation : absent
- metaphloem sieve plate : compound
- phytoliths distribution in central cylinder : all around the fibrous part adjacent to the phloem throughout the central cylinder
- identification within "subfamily" or "tribe" : in all palm family ; subfamily Coryphoideae ; tribe Trachycarpeae ; without Arecoideae
cortex
- cortex : very thin
- multicellular epidermal hair : absent
- epidermal cells : erect (radially elongate) ; spheroid to cubical
central cylinder
- fibrous bundles in central cylinder : present
- shape of fibrous part in transverse section : Reniforma to Cordata - Complanata
- little fibrous vascular bundles (bridges) : absent (poorly developed)
- radiating parenchyma : absent
- tabular parenchyma : absent
- paravascular parenchyma : developed
- ground parenchyma of the central cylinder : spheroid to slightly elongated (length / width < 3–4) cells (∅ < 150 µm) and compact [sometimes few and little lacunae in old stems
- ground parenchyma sustained growth : absent (Type A)
- superficial protective layer (sub-epidermal) : permanent epidermis
- general stem pattern (ex-von Mohl's classification) : Geonoma-Type
- median sinus : rounded
- auricular lobe : rounded
- auricular sinus : angular ; absent only in the central zone
- vascular zone position : excluded from the fibrous dorsal cap
- fibrous part adjacent to the xylem : present (often only in the central zone)
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; mostly 2 (3-4)
- number of phloem strand : one strand in the subcortical and transitional zones and two in the central zone of the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- phytoliths : globular echinate to granulate
- 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 : 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 ; [6] simple perforation plate only
- fibrous part centrifugal differentiation : absent
- wide metaxylem element : present
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : absent
- metaphloem sieve plate : compound
- phytoliths distribution in central cylinder : all around the fibrous part adjacent to the phloem throughout the central cylinder
fibrous vascular bundle
- shape of fibrous part in transverse section : Reniforma to Cordata - Complanata
- fibrous part adjacent to the xylem : present (often only in the central zone)
- number of wide metaxylem element per fibrous vascular bundle : mostly 1 ; mostly 2 (3-4)
- number of phloem strand : one strand in the subcortical and transitional zones and two in the central zone of the central cylinder
- radial elongation of the fibrous part (in subcortical zone) : absent
- paravascular parenchyma : developed
- median sinus : rounded
- auricular lobe : rounded
- auricular sinus : angular ; absent only in the central zone
- vascular zone position : excluded from the fibrous dorsal cap
- 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 : 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 ; [6] simple perforation plate only
- metaphloem sieve plate : compound
- wide metaxylem element : present
- fibrous part centrifugal differentiation : absent
- radiating parenchyma : absent
ground parenchyma
- ground parenchyma of the central cylinder : spheroid to slightly elongated (length / width < 3–4) cells (∅ < 150 µm) and compact [sometimes few and little lacunae in old stems
- ground parenchyma sustained growth : absent (Type A)
- superficial protective layer (sub-epidermal) : permanent epidermis
- tangential elongation and anticlinal divisions of subcortical parenchyma cells : absent