Daffodil

Russian Tortoise

Agrionemys horsfieldii

Contains lycorine and other isoquinoline alkaloids throughout the plant, with highest concentration in bulbs. Causes vomiting, diarrhea, tremors, and cardiac arrhythmias.

Hermann's Tortoise

Testudo hermanni

Lycorine throughout plant, highest in bulbs. Causes cardiac arrhythmias.

Greek Tortoise

Testudo graeca

Lycorine alkaloids throughout plant; bulbs especially concentrated.

Sulcata Tortoise

Centrochelys sulcata

Lycorine alkaloids — all parts dangerous.

Leopard Tortoise

Stigmochelys pardalis

Lycorine alkaloids — all parts dangerous.

Eastern Box Turtle

Terrapene carolina

Lycorine throughout plant; bulbs especially concentrated.

Red-eared Slider

Trachemys scripta elegans

Lycorine alkaloids — all parts especially bulbs are toxic.

Yellow-bellied Slider

Trachemys scripta scripta

Lycorine alkaloids — all parts toxic.

Painted Turtle

Chrysemys picta

Lycorine alkaloids — all parts including bulbs are toxic.

Red-footed Tortoise

Chelonoidis carbonarius

[confidence: high] [source: The Tortoise Table plant database; ASPCA Animal Poison Control (cross-ref); Amaryllidaceae alkaloid toxicity review] Daffodil (Narcissus spp.) contains lycorine and other Amaryllidaceae alkaloids that are toxic to reptiles; all parts including bulb are toxic and cause vomiting, diarrhea, and cardiac arrhythmia.