Quadrangularis
- Ancistrocrania
- Animal
- Bagworm moth
- Brasilodon
- Cicendia
- Cissus quadrangularis
- Cladocera
- Colochirus quadrangularis
- Corryocactus
- Critonia
- Crotalus aquilus
- Dicyrtomidae
- Dorstenia contrajerva
- Eriocaulaceae
- Erithalis quadrangularis
- Euphorbia
- Euphorbia canariensis
- Funiculina quadrangularis
- Gladiolus
- Hoploscaphites
- Latin
- Lepyronia quadrangularis
- Malaxis excavata
- Melicope quadrangularis
- Montanoa
- Moraceae
- Neilonellidae
- Orthonychiidae
- Passiflora quadrangularis
- Peperomia
- Phyllostachys
- Plant
- Polycarpa pomaria
- Pseudotritonia
- Psyche quadrangularis
- Quadrangularis Reversum
- Rhigospira quadrangularis
- Rhipsalis baccifera
- Sauropus
- Senna septemtrionalis
- Smilax rotundifolia
- Stichopus chloronotus
- Syzygium antisepticum
- Tarenna quadrangularis
- Tillandsia juncea
- Trigonia
- Vermicularia spirata