Plants starting with the syllable “Sp”

Spider Lily

Lycoris

Spatulate longleaf pawpaw

Asimina longifolia var. spatulata

Spiny hackberry

Celtis ehrenbergiana

Gironniera

Gironniera sponioides

Also known as: Sponia-like gironniera

Globular Kaya Nut-nutmeg

Torreya nucifera f. sphaerica

Also known as: Spherical-seeded Japanese nutmeg-yew

Spanish ivory thistle

Silybum eburneum subsp. hispanicus

Also known as: Spanish milk thistle

Spatulate pawpaw

Asimina spatulata

Spherical Kaya Nut-nutmeg

Torreya nucifera var. sphaerica

Also known as: Spherical Japanese nutmeg-yew

Spiked coral vine

Ercilla spicata

Spiniest hackberry

Celtis spinosissima

Spiny Maclura

Maclura spinosa

Spiny atropa

Atropa spinosa

Spiny castela

Castela spinosa

Spiny hackberry

Celtis spinosa

Spiny hackberry two-toned

Celtis pallida var. discolor

Also known as: Spiny hackberry

Spiny kauri

Agathis spinulosa

Splendid Cacao

Theobroma speciosa

Spoon-leaved kauri

Agathis spathulata

Spotted Belladonna

Atropa punctata

Spotted Milk Thistle

Silybum maculatum

Spotted Tree of Heaven

Ailanthus punctata

Sprawling Belladonna

Atropa humifusa

Spreading Hemlock

Conium divaricatum

Spreading hackberry

Celtis diffusa