Cheirodendron trigynum subsp. trigynum is a tree species that grows to a height of 5 to 15 meters, with secretory canals in most of its parts. The leaves of this tree are compound (palmate) and arranged oppositely. Each leaf typically has 3 to 5(–7) leaflets that are ovate, elliptic to broadly ovate, or occasionally somewhat obovate. The largest, central leaflet measures 5 to 18 cm long and is usually half to nearly as wide as long. The apex of the leaflets can be rounded, obtuse, or occasionally emarginate to caudate-acuminate, with a base that is broadly cuneate to rounded or subtruncate. The blades are coriaceous to chartaceous and often have a midvein, margins, petiolule, and petiole-tinged purple. The petiolule is usually laterally compressed. The margins are somewhat thickened, ranging from entire to serrate-crenate, with teeth strongly curved upward and glandular. The veins are flat on the upper surface and slightly recessed in dried material. The petioles are 5 to 12 cm long and sheathe the stem at the base, with petiolules 1 to 4 cm long and subterete. Stipules are absent. The flowers form in terminal, erect, oppositely branched panicles of umbellules, with inflorescences up to 24 cm long. The flowers are bisexual (perfect) and functionally staminate, as the plant is andromonoecious (having hermaphrodite and male flowers on the same plant). The calyx consists of five short, basally connate teeth. The corolla has 5(6) petals, with dark purple buds and mature petals that are purple externally and greenish within. The stamens are usually as many as the petals, sometimes numerous and distinct. The ovary is inferior, 2 to 5-carpellate, with carpels connate and styles 2 to 5, 1 to 2 mm long, and either distinct or connate. The fruit is a drupe, green when immature and ripening to dark purple, with a fleshy exocarp. It is globose or laterally compressed, measuring 3 to 7.5 mm long, with cartilaginous, laterally compressed pyrenes as many as the styles. The seeds contain one embryo per pyrene (fruit-stone within a drupe or drupelet). It is native to mesic to wet forests between 310-2,190 meters.
Bean-shaped (Reniform): Resembling the shape of a kidney or bean.
Square or Oblong: Angular shape with all sides more or less equal or longer than wide.
Triangular: Three-sided shape, broadest below the middle.
Elliptic: Rounded at both ends. shaped like an ellipse or oval.
Ovate or Obovate: egg-shaped, broader at one end.
Linear: Extremely long and narrow, with sides usually parallel.
Round: Appears circular, with length and width roughly the same.
Cardioid (Heart-Shaped): One edge has a prominent double curve into two lobes.
Cylindrical: A cylinder with parallel sides and a circular cross-section.
Discoid: Resembling a disc or plate with two relatively flat surfaces.
Fusiform: Spindle-shaped, tapering at both ends.
Globose: Spherical.
Lenticular: Resembling a lens with two convex surfaces.
Ovoid: Egg-shaped.
Plano-convex: Having a flat ventral (planar) surface and a curved dorsal (convex) surface.
Polygonal: Having more than three flat faces meeting at angles.
Sectoroid: Resembling a segment of an orange with two relatively flat faces and one curved face.
Subglobose/ellipsoid: Inflated shape but less than spherical.
Trigonous: Having three faces that meet at a distinct angle; triangular in cross-section.
Endangered species (E) are species that are so rare they’re in danger of becoming extinct.
Threatened species (T) are species that are likely to become endangered within the foreseeable future throughout all or a significant portion of their range.
Species of Concern (SOC) are species about which there are some concerns regarding status and threats, but insufficient information is available to list the species under the Endangered Species Act (ESA).
Plant Extinction Prevention (PEP) is a state status for rare plants that focuses its efforts on species that have fewer than 50 remaining wild individuals.
Orthodox seeds (desiccation-tolerant): can be dried to an internal seed moisture of less than 12% water and stored at freezing temperatures.
Intermediate seeds (temperature-sensitive) tend to age faster than orthodox seeds and may have only a 5-year lifespan when stored at -20°C. They are recommended for storage at 5°C.
Recalcitrant seeds (desiccation-sensitive): cannot be stored in a conventional freezer as they cannot survive after drying and/or freezing at -20°C. They are recommended for cryopreservation storage.