Plant with Square Stem is a Euphorbia Leuconeura

could you please tell me what this plant is ?
It is a picture of a plant that I got from a lady from California that has since passed away.It looks tropical and also has a cactus look. 1 inch square stalk, but no spikes or spines anywhere. a small round pod appears and spits small black seeds everywhere. quite a distance. no noticeable flowers, I would appreciate any help you could give to help id this plant Thanks Randy Johnson

Hi Randy,


Your plant with the distinctive square stem, is a Euphorbia Leuconeura or Madagascar Jewel Plant. It can grow as tall as 6 ft, resembling a small branching tree. Although Madagascar Jewel Plants prefers dry soil, they less susceptible to over-watering than many other Succulent PlantsLearn how to grow and care for succulent plants at This unique Euphorbia propagates by shooting its seeds into the air and doesn’t mind low humidity. bright indirect helps the plant bloom.  When damaged Euphorbia Leuconeura secretes a poisonousPlants are a great addition to homes and offices, but it’s important to know whether your plants are dangerous to children, pets, or even adults. Some plants contain chemicals such as oxalates, solanine, glycosides, or alkaloid lycorine that may cause vomiting, nausea, diarrhea, swelling and redness of the mouth, throat, and lips, and trouble breathing. Touching parts of certain plants, especially the sap, may cause various skin irritations. The weight and age of the human or pet involved, and the part and amount of plant eaten determine how severe the reaction to the toxins will be. Although plants may be listed as non-toxic, they can still cause individual allergic reactions. If there is any question after a houseplant has been ingested or touched immediately call the Poison Control Center 1-800-222-1222 The Handbook of Poisonous and Injurious Plants [Paperback]is an excellent reference to keep around if you have young children and pets. white latex sap that causes severe skin irritations so always wear gloves when handling  a Madagascar Jewel Plant.