1House plant- Monstera ‘Thai Constellation’

Habit – A perennial, evergreen, vining or semi-epiphytic herb that can reach several meters in height when provided with suitable support. The plant features a thick stem with distinct nodes, from which large leaves emerge. It utilizes aerial roots to attach itself to supports and climb vertically.

Roots – Consist of both underground roots and aerial roots that emerge from the nodes of the vining stem. Aerial roots are thick and fleshy, helping the plant anchor to supporting surfaces; they can also absorb moisture and nutrients from the surrounding environment. Underground roots absorb water and minerals while anchoring the plant within its growing medium.

Stem – Thick, fleshy, cylindrical, and vining stem, characterized by clearly defined nodes and internodes. Leaves, aerial roots, and new shoots emerge from these nodes. Young stems are green and relatively flexible, whereas older stems become thicker and more robust. Aerial roots develop along the stem, providing additional support as the plant climbs.

Leaves – simple, large, leathery, glossy, and broad leaves—ranging in shape from heart-like (cordate) to oval. Mature leaves feature deep marginal lobes and distinct internal perforations known as “fenestrations.” The leaf surface is smooth, with a prominent midrib and clearly visible lateral veins.

Leaf Arrangement – ​​The leaves are arranged alternately along the vining stem, with each leaf emerging from a separate node. Young leaves are typically smaller and less divided, while mature leaves grow larger and develop characteristic lobes and fenestrations.

Inflorescence – The inflorescence consists of a thick, fleshy spadix enclosed by a modified, leaf-like structure called a spathe. It emerges from the stem once the plant has reached sufficient maturity and growing conditions are favorable.

Flowers – Small, numerous, and densely arranged on the surface of the spadix. Individual flowers are inconspicuous and closely packed, forming a dense, cylindrical floral structure characteristic of the Araceae family.

Perianth – A perianth is absent in *Monstera deliciosa*; the individual flowers lack a distinct floral envelope.

Androecium – Stamens present in numerous closely packed flowers along the spadix. The anthers produce pollen grains that are released during the flowering process.

Gynoecium – Gynoecium composed of fused carpels. Ovary superior, containing ovules that develop into seeds following successful fertilization. The ovaries are closely packed within the spadix and develop into fleshy fruiting units as the fruit matures.

Fruit – The fruit develops as an elongated, cylindrical structure composed of numerous fruit units densely packed along the spadix. Upon ripening, the fruit becomes fleshy and develops an edible portion with a distinct tropical flavor. Unripe fruit contains irritating calcium oxalate crystals and should not be consumed before reaching full maturity.

Seeds – Seeds develop within the fleshy fruit units following successful fertilization. Sexual reproduction via seeds is possible, although cultivated ‘Thai Constellation’ plants are typically propagated vegetatively to maintain their characteristic variegated leaves.

Floral formula – Br ⚥ P₀ A∞ G(∞)

Systematic Position
Kingdom – Plantae
Clade – Angiosperms
Clade – Monocots
Order – Alismatales
Family – Araceae
Subfamily – Monsteroideae
Tribe – Monstereae
Genus – Monstera
Species – Monstera deliciosa
Cultivar – Monstera deliciosa ‘Thai Constellation’