Glossary Term: Septum
A dividing wall, for example inside a spur (as in many species of Cleisostoma) or in the trilocular ovary of some Orchidaceae (as in subfamily Apostasioidae, Phragmipedium, and Selenipedium). Plural: septa.
Images:
Septum
After Engler and Prantl
Septum
Septum in the spur of Cleisotoma sp., after Bauer & Lindley
- Saccate
- Sagittate
- Saprophyte
- Scaberulous
- Scabrid
- Scale
- Scalpelliform
- Scandent
- Scarious
- Scrotiform
- Scutellum
- Secondary axis
- Secondary nerves
- Sectile
- Section
- Secund
- Seed
- Semi-
- Semiterete
- Sepal
- Sepals
- Septate
- Septum
- Sericeous
- Serrate
- Serrulate
- Sessile
- Seta
- Setae
- Setose
- Sigmoid
- Simple
- Sinuate
- Sister group
- Sister groups
- Smooth
- Spatha
- Spatulate
- Spike
- Spur
- Spurred
- Squamulose
- Stamen
- Staminode
- Stelidia
- Stellate
- Sterile bracts
- Stigma
- Stigmatophore
- Stigmatophores
- Stipe
- Stipulaceous
- Striate
- Strigose
- Style
- Sub-
- Subfamily
- Subgenus
- Subglabrous
- Subpetiolate
- Subterete
- Subtribe
- Subulate
- Succulent
- Sulcate
- Superposed
- Suture
- Symbiont
- Symbiotic
- Sympatric
- Symplesiomorphic
- Symplesiomorphy
- Sympodial
- Synanthous
- Synapomorphic
- Synapomorphy
- Synsepalum
- Syntype
- Systematics