| bole | habit | large trees 30+ m or small trees |
| bole | buttresses | absent or present |
| bole | buttress_size | short |
| bole | bole_form | cylindrical or fluted |
| bole | spines | absent |
| bole | bark_outer_color | yellow or gray or brown |
| bole | bark_peeling | not peeling |
| bole | slash_color | cream or yellow or orange or red or brown |
| bole | slash_lamination | absent |
| bole | slash_odor | absent |
| bole | exudate | absent or present |
| bole | exudate_color | yellow |
| bole | exudate_abundance | spotty |
| bole | exudate_darkening | yes |
| twig | terminal_buds_enclosed_by_leaves | no |
| twig | clumped_hairs | absent |
| twig | complex_hairs | absent or leaf |
| twig | complex_hair_type | stellate |
| twig | stinging_hairs | absent |
| twig | mature_twig_indumentum | absent or present |
| twig | twig_indumentum_density | sparse or dense |
| twig | twig_cross_section | terete |
| twig | leaf_location | spaced down twig |
| twig | leaf_insertion | alternate |
| twig | leaf_plane | one plane |
| stipule | stipules | present |
| stipule | stipule_freedom | free |
| stipule | stipule_type | lateral |
| stipule | stipule_on_twig | not encirlcing twig |
| stipule | stipule_form | deltoid |
| stipule | stipule_fringe | absent |
| stipule | stipule_size | conspicuous |
| stipule | stipule_persistence | deciduous |
| leaf | leaf_scalelike_or_needlelike | none |
| leaf | leaf_complexity | simple |
| leaf | petiole_length | less than a quarter |
| leaf | petiole_winged | not winged |
| leaf | petiole_attachment | base of leaf |
| leaf | petiole_base_swelling | not swollen |
| leaf | petiole_apex_swelling | not swollen |
| leaf | petiole_cross_section | flattened or grooved |
| leaf | petiole_wrinkling | smooth |
| leaf | leaf_similarity | homophyllus |
| leaf | leaf_texture | coriaceous |
| leaf | leaf_base | symmetrical |
| leaf | leaf_dissection | not dissected |
| leaf | leaf_margins | entire |
| leaf | margin_plane | flat |
| leaf | leaf_base_shape | tapered |
| leaf | leaf_apex_shape | acuminate |
| leaf | upper_leaf_surface | matte or glaucous |
| leaf | lower_leaf_surface | glaucous |
| leaf | primary_venation | pinnate |
| leaf | primary_vein_above | sunken |
| leaf | secondary_vein_spacing | open |
| leaf | secondaries_above | raised |
| leaf | secondary_vein_course | mostly parallel or mostly converging |
| leaf | secondary_vein_angle | medium |
| leaf | secondary_vein_termination | brochidodromous or eucamptodromous |
| leaf | secondary_vein_branching | not branched |
| leaf | intersecondary_veins | few more than half |
| leaf | tertiary_veins_above | raised or flat |
| leaf | tertiary_vein_form | weakly percurrent or reticulate |
| leaf | direction_of_percurrence | perpendicular to midrib or parallel to midrib |
| leaf | ramified_branching | absent |
| leaf | domatia | absent or present |
| leaf | domatia_type | pit-like |
| leaf | domatia_distribution | along margin or base or tip |
| leaf | leaf_glands | absent |
| leaf | marginal_and_petiolar_glands | laminar margin |
| leaf | hairs_on_mature_leaf | absent or present |
| leaf | hair_density | dense |
| inflor | inflorescence | multiple |
| inflor | inflorescence_position | terminal or axillary |
| inflor | inflorescence_axis | branched |
| inflor | specialized_inflorescence_units | absent |
| flower | numerous_persistant_floral_bracts | absent |
| flower | floral_sexuality | bisexual |
| flower | peduncle | present |
| flower | flower_size | to about 0.5 cm |
| flower | floral_symmetry | zygomorphic |
| flower | floral_column | absent |
| flower | hypanthium | absent |
| flower | disk | present |
| flower | disk_position | stamens inside (extrastaminal) |
| flower | perianth | present |
| flower | perianth_type | K+C |
| flower | sepal_number | 5 |
| flower | sepal_freedom | free |
| flower | sepal_persistence | caducous |
| flower | sepal_accrescence | not accrescent |
| flower | epicalyx | absent |
| flower | petal_presence | present |
| flower | petal_number | 5 |
| flower | petal_fusion | free at base |
| flower | petal_texture | not fleshy or fleshy |
| flower | petal_persistence | deciduous |
| flower | petal_stalks | sessile |
| flower | petal_margin | entire |
| male | stamen_number | 6 |
| male | stamen_filaments | present |
| male | stamen_fascicling | fascicled |
| male | stamen_adnation | free |
| male | stamen_size | equal sizes |
| male | anther_locule_number | 2 |
| male | anther_fixation | dorsifixed |
| male | anther_adornment | not awned |
| male | anther_dehiscence | long slits |
| female | ovary_position | superior |
| female | carpel_arrangement | syncarpous |
| female | carpel_number | 3 |
| female | locule_number | 3 |
| female | style_presence | solitary including joined |
| female | stigma_lobes | 3 |
| female | stigma_shape | not distinctive |
| fruit | common_fruit_type | samara |
| fruit | fruit_fleshiness | not fleshy |
| fruit | fruit_aggregation | not multiple or aggregate |
| fruit | fruit_dehiscence | indehiscent |
| fruit | fruit_accessory_tissue | no fleshy perianth parts |
| fruit | fruit_wings | present |
| seed | seed_number_and_multiple | 1-3 |
| seed | seed_size | less than 5 mm |
| seed | seed_wings | absent |
| seed | seed_ruminations | seed uniform |
| seed | seed_aril | absent |
| seed | seed_endosperm | absent |
| info | field_characters | leaves distichous; apex acuminate and usually with large glands; abaxial surface covered in small white hairs; one petal forming a nectar-filled sac; fruits breaking into 3 samaras; the wings large; twig bark often pale white |
| info | scoring_decisions | Stipule size changed to conspicuous from minute - easy to see on herbarium specimens w/out magnification. One specimen was glabrous below - indumentum on mature leaf scored as present and absent. |
