General:
Perennial herb from a deep, scaly, egg-shaped bulb 3-5 cm long; flowering stems 20-70 cm tall, smooth.

Leaves:
Basal leaves several, linear and grass-like, 10-40 cm long, 2-6 (10) mm wide, smooth, keeled, finely rough-margined; stem leaves 2 to 4, reduced upward becoming bract-like.

Flowers:
Inflorescence a fairly compact to elongate, terminal cluster of several to many, stalked flowers, the stalks 0.5-3 cm long, ascending to erect; flowers creamy-white, bell- to saucer-shaped, of 6 distinct tepals, the tepals narrowly egg-shaped, 4-5 mm long, the inner 3 slightly longer than the outer 3, each with a yellowish-green, somewhat indistinct gland near the base just above the claw; stamens 6; pistil 1, 3-chambered.

Fruits:
Capsules, oblong-elliptic, 3-lobed, 0.8-1.5 cm long; seeds numerous, brown, 5-6 mm long.

Notes:
Two varieties occur in BC:

1. Upper stem leaves with papery sheaths; 3 outer tepals unstalked or short-clawed, only the inner 3 long-clawed............ var. gramineus (Rydb.) Walsh ex M.E. Peck

1. Upper stem leaves without sheaths; all 6 tepals equally clawed........... var. venenosus

Source:  The Illustrated Flora of British Columbia