Schefflera species: Australian umbrella tree

Synonyms

Brassaia, Dizygotheca, Heptapleurum

Family

Araliaceae

Common Names

Umbrella tree, octopus tree, Queensland umbrella tree, Australian ivy palm, Hawaiian elf schefflera.

Plant Description

A large genus of over 700 species of small trees, shrubs and climbers, Schefflera species originate from tropical and subtropical regions of the world. Commonly grown as ornamental garden plants and pocket houseplants, they are prized for their attractive foliage. The alternate, palmate leaves consist of uniform 5 - 16 leaflets arranged like a cart wheel at the ends of long petioles. The glossy green leaflets vary considerably in size, depending on the species, and in some of the varieties the leaves are variegated. The inflorescences consist of branching radiating spikes, among which the numerous small flowers are arranged, (Fig. 354 and Fig. 355).

Figure 354. Schefflera actinophylla in florescence.

Figure 355. Schefflera hybrid.

Toxic Principle and Mechanism of Action

Information on the toxic principles present in Schefflera species is limited. Compounds similar to those found in Hedera species have been found in Schefflera and include terpenoids and saponins [1]. Oxalate crystals in the leaves and stems may also be present and contribute to the irritant effects experienced when the plant is chewed.

Risk Assessment

Schefflera are commonly grown as house plants, and as such pose a risk to household pets that chew on the stems and leaves [2]. Poisoning of household pets is rarely reported, and the Schefflera species are generally considered one of the safest houseplants.

Clinical Signs

The irritant compounds in the plant will induce vomiting and diarrhea if the leaves and fruits are chewed and swallowed.

Treatment

Unless vomiting and diarrhea are excessive, treatment is seldom necessary. The plant should be removed or made inaccessible to the pets that are eating the plant.