1. Very leafy malodorous tropical weedy shrub whose seeds have been used as an adulterant for coffee; sometimes classified in genus Cassia
   - coffee senna, styptic weed, stinking weed, Senna occidentalis, Cassia occidentalis

Derived forms: mogdad coffees

Type of: senna

• genus Plumeria
• genus Pluteus
• genus Pluvialis
• genus Pluvianus
• genus Poa
• genus Podalyria
• genus Podargus
• genus Podiceps
• genus Podilymbus
• genus Podocarpus
• genus Podophyllum
• genus Poecilocapsus
• genus Poecilogale
• genus Poephila
• genus Pogonia
• genus Pogostemon
• genus Polanisia
• genus Polemonium
• genus Polianthes
• genus Polioptila
• genus Polistes
• genus Pollachius
• genus Polyangium
• genus Polyborus
• genus Polybotria