Euterpe luminosa
Euterpe luminosa is a species of flowering plant in the family Arecaceae. It is found only in Pasco Province of Peru. It is threatened by habitat loss.
Description
Stems
This species typically grows in clusters, though a single stem usually dominates while others remain as basal offshoots. The stem is upright, reaching 5–11 meters in height and 5–7 cm in diameter, with a grayish surface.Leaves
The crown comprises 9–12 arching leaves. The sheath, measuring 48–65 cm, is green and covered with a moderate layer of reddish-brown woolly hairs near the top. The petiole, 20–35 cm long, transitions from reddish in young plants to green in maturity and is densely coated with fine reddish-brown hairs. The rachis, extending 1.1–1.4 meters, has similar hair coverage. Each rachis bears 48–69 leaflets per side, arranged in a slightly drooping manner. The leaflets are glabrous, with a pronounced midvein and two lateral veins.- Basal leaflets: 20–25 cm long, 0.1–0.2 cm wide
- Middle leaflets: 35–41 cm long, 0.6–1 cm wide
- Terminal leaflet: 14–15 cm long, 0.5 cm wide
Inflorescence
The inflorescence emerges beneath the leaves and stands erect during bloom. The peduncle, around 4–5 cm long and 1 cm thick, supports the prophyll, which is 32 cm long and 3 cm wide, smooth, and papery. The main bract, also 32 cm long, tapers to 2 cm in width and lacks an umbo. Smaller bracts, up to 4 cm long, may also be present. The rachis extends 13–16 cm and bears 30–40 branchlets, each reaching 30 cm long and 2 mm thick, with a light to dense covering of fine, reddish-brown, star-shaped hairs.Flowers
Flowers are arranged in triads toward the base, while higher sections contain single or paired staminate flowers. Some inflorescences are predominantly male.- Male flowers: 6–7 mm long, with triangular petals and small, triangular sepals. Filaments measure 1.5 mm, with anthers reaching 3 mm. A vestigial ovary is present.
- Female flowers: Smaller, up to 2.5 mm long, with round petals and sepals and six small sterile stamens.