Elevation: Approximately 700 meters above sea level.[2]
- Habit: A multi-stemmed shrub (frutex pluricaulis), perennial and generally erect at first.[2]
- Stems: Olive-brown, 2–3 mm in diameter, reaching up to 4 meters in length. They are initially leafless but become wavy (flexuosis), slightly branched, and leafy as they grow. They are covered in upward-pointing (antrorsos) hairs, especially on younger stems. Leaves: Membranous in texture with petioles (leaf stalks) 9–25 mm long.[2]
- Blade shape: Broadly ovate, 3–7 cm long and 1.5–4 cm wide.[2]
- Surface: The upper side has scattered, ascending hairs; the underside has hairs concentrated along the veins.
- Margins/base: The tip (apex) is tapered or sharp; the base is broadly heart-shaped (subcordata or cordata)
- Inflorescence: Loose (lax) panicles located at the ends of branches or in the leaf axils. Pedicels (flower stalks) are 3–6 mm long and hairy.[2]
- Calyx: Tubular, 3–3.5 mm long, hairy on both the interior and exterior; it has 5 lobes, each 1–1.5 mm long.
- Corolla: Erect and hairless (glabrous), colored a violet-green. It is 1.5–2 cm long with a cylindrical tube that widens slightly at the top, ending in 5 tooth-like lobes.[3]
- Stamens: Two fertile stamens that protrude (exserted) from the flower. The filaments are flattened/plate-like at the top and hairy; anthers are 1 mm long and oblong.[3]
- Fruit: A spherical (globoso) capsule, 3–3.5 mm in diameter. The calyx remains attached and is constricted below the lobes.
- Seeds: Between 6 and 14 seeds, dark brown or reddish in color[3]
- Habitat: Specifically located on slopes within shrublands, preferring crumbly (deleznables) soils. It appears to be endemic to the Henri Pittier National Park in Venezuela.[3]
- Related Species: It is closely related to Schwenkia grandiflora, but differs in the following ways:
- S. trujilloi has longer, wavy stems (up to 4m) and smaller leaves (under 7 cm long).
- S. grandiflora has leaves longer than 7 cm and flowers that exceed 2 cm in length.[3]
