Diplazium striatastrum
Collection data
Classification & Common Names
- Class: Polypodiopsida
- Family: Athyriaceae
- Genus: Diplazium Sw.
- Species: Diplazium striatastrum Lellinger
Collection Data
- Collection Date: 18 Jan. 2013
- Collection Number: 3430
- Primary collector: M. Sundue
- Collected by: M. Sundue along with the OTS tropical ferns and lycophytes course
- Determined by: M. Sundue
- Habitat: Primary Forest
- Habit: Terrestrial
- Specimen location: VT
Collection Location
- General location: La Selva Biological Field Station
- Country: Costa Rica
- State or Province: Heredia
- Coordinates: ,
- Elevation: 100 m
About the Author
Michael Sundue
My field work is centered in Colombia, and Papua New Guinea. I am based at the Royal Botanic Garden Edinburgh (E). If you have any ferns that you want identified, please send them to me!
What are the differences between this species and D. striatum? I always get confused by them.
The names are a bit confusing, but there are some good differences, the most evident of which is laminar dissection. Diplazium striatastrum (shown here) is less divided (1-pinnate-pinnatifid) with pinnae that are divided at most half-way to the costa. Diplazium striatum is generally a larger plant with more divided (1-pinnate-pinnatisect). Diplazium striatastrum also tends to have a rather tall (to 1m) sub-arborescent rhizome, whereas D. striatum (which I am much less familiar with, having only seen twice) seems to have subterranean to surficial, but not sub-arborescent, rhizomes. The type of D. striatastrum is from Costa Rica; that of D. striatum is from Martinique. Diplazium striatum is more widespread and I cannot easily distinguish it from other species such as D. lindbergii.