| Threadlike Riverweed |
|
 |
|
| File size | 529113 |
| Original date | 3/13/20 6:47 AM |
| Resolution | 2048 x 1536 |
| Flash | Flash did not fire, auto |
| Focal length | 40.0mm |
| Exposure time | 1/250s |
| Aperture | 16.0 |
| Focus Distance | |
| Metering Mode | Center weighted average |
| Camera make | NIKON CORPORATION |
| Camera model | NIKON D7100 |
| Sensor type | OneChipColorArea |
 |
 ative |
 |
 |
Photo: |
Botanical name: Indotristicha ramosissima Family: Podostemaceae (Riverweed family)
Threadlike Riverweed is herb with free
floating, branched stems.
Stems are free floating, thread-like, branched, 20-60 cm long, attached to
rock by branched prostrate axis bearing 'feet' and root hairs. Stem
with 1.5-3 cm long ramuli and scale leaves. Flowers are 0.8-1.2 cm long
before anthesis, flower-stalk 5-8 mm long. Perianth approximately 2 cm
long. Stamens 3, 2.5-4.0 mm long; pollen in monads. Ovary is elliptical, 2-3
mm long; stigma 1.0-1.5 mm long; flower-stalk to 2.7 cm long. Fig. 1. The
plants that occur in upstream regions have shorter stems and ramuli than
those in lower regions. Flowering is not common in all populations.
Threadlike Riverweed is
native to Southern Western Ghats. Flowering: January-March.
| Identification credit: Siddarth Machado | Photographed in South Karnataka. |
• Is this flower misidentified? If yes,