Alstonia R.Br. (Apocynaceae)

bolehabitemergent trees or large trees 30+ m or small trees
bolebuttressesabsent or present
bolebuttress_and_root_typestilt
bolebuttress_sizeshort or tall
bolebole_formcylindrical or hooped or fluted
bolespinesabsent
bolebark_outer_colorwhite or cream or green or orange or gray or brown or black
bolebark_peelingnot peeling
boleslash_colorcream or yellow or orange or red or gray or brown
boleslash_laminationabsent or present
boleslash_odorabsent
boleexudatepresent
boleexudate_colorwhite
boleexudate_abundanceflowing
boleexudate_darkeningno
twigterminal_buds_enclosed_by_leavesno or yes
twigclumped_hairsabsent
twigcomplex_hairsabsent
twigstinging_hairsabsent
twigmature_twig_indumentumabsent
twigtwig_cross_sectionangled
twigleaf_locationclustered at twig end
twigleaf_insertionwhorled
twigleaves_per_whorl3-10
stipulestipulesabsent
leafleaf_scalelike_or_needlelikenone
leafleaf_complexitysimple
leafpetiole_lengthabsent or less than a quarter
leafpetiole_wingednot winged or winged
leafpetiole_attachmentbase of leaf
leafpetiole_base_swellingnot swollen
leafpetiole_apex_swellingnot swollen
leafpetiole_cross_sectionflattened or grooved
leafpetiole_wrinklingsmooth or longitundinal
leafleaf_similarityhomophyllus
leafleaf_texturecoriaceous or chartaceous
leafleaf_basesymmetrical
leafleaf_dissectionnot dissected
leafleaf_marginsentire
leafmargin_planeflat or revolute
leafleaf_base_shapetapered
leafleaf_apex_shaperounded or acute or acuminate
leafupper_leaf_surfacematte or shining
leaflower_leaf_surfacematte or glaucous or shining
leafprimary_venationpinnate
leafprimary_vein_aboveflat or sunken
leafsecondary_vein_spacingopen
leafsecondaries_aboveraised or flat
leafsecondary_vein_coursemostly parallel
leafsecondary_vein_anglesubperpendicular
leafsecondary_vein_terminationintramarginal
leafsecondary_vein_branchingnot branched
leafintersecondary_veinsall less than half or few more than half
leaftertiary_veins_aboveflat or not visible
leaftertiary_vein_formdistinctly percurrent or weakly percurrent or reticulate
leafdirection_of_percurrenceperpendicular to midrib or parallel to midrib
leaframified_branchingabsent
leafdomatiaabsent
leafleaf_glandsabsent
leafmarginal_and_petiolar_glandsabsent
leafhairs_on_mature_leafabsent or present
leafhair_densitydense
inflorinflorescencemultiple
inflorinflorescence_positionterminal
inflorinflorescence_axisunbranched or branched
inflorspecialized_inflorescence_unitsabsent
flowernumerous_persistant_floral_bractsabsent
flowerfloral_sexualitybisexual
flowerpedunclepresent
flowerflower_sizeto about 0.5 cm or to about 3 cm
flowerfloral_symmetryactinomorphic
flowerfloral_columnabsent
flowerhypanthiumabsent
flowerdiskabsent or present
flowerdisk_positionstamens outside (intrastaminal)
flowerperianthpresent
flowerperianth_typeK+C
flowersepal_number5
flowersepal_freedompartially joined
flowersepal_persistencecaducous
flowersepal_accrescencenot accrescent
flowerepicalyxabsent
flowerpetal_presencepresent
flowerpetal_number5
flowerpetal_fusionall joined from base
flowerpetal_texturenot fleshy
flowerpetal_persistencedeciduous
flowerpetal_stalkssessile
flowerpetal_marginentire
malestamen_number5
malestamen_filamentspresent
malestamen_fasciclingall free
malestamen_adnationadnate to perianth
malestamen_sizeequal sizes
malestamen_meryisomerous
maleisomerous_stamen_positionoppositisepalous
maleanther_locule_number2
maleanther_fixationbasifixed
maleanther_adornmentnot awned
maleanther_dehiscencelong slits
femaleovary_positionsuperior
femalecarpel_arrangementjoined at base or joined by styles
femalecarpel_number2
femalelocule_number1
femalestyle_presencesolitary including joined
femalestigma_lobes1
femalestigma_shapedistinctive
femalestigma_formcapitate
fruitcommon_fruit_typefollicle
fruitfruit_fleshinessnot fleshy
fruitfruit_aggregationnot multiple or aggregate
fruitfruit_dehiscencedehiscent
fruitfruit_accessory_tissueno fleshy perianth parts
fruitfruit_wingsabsent
seedseed_number_and_multiple100
seedseed_sizebarely visible
seedseed_wingsabsent
seedseed_ruminationsseed uniform
seedseed_arilabsent
seedseed_endospermpresent
infofield_characterscopius white latex from slash; large trees with pale bark and large buttresses; leaves in whorls of 3-8; fruit long slender follicles