Watson, ACT
Identification history
| Glossostigma cleistanthum | 19 Nov 2019 | BettyDonWood | ||
| Glossostigma diandrum | 18 Nov 2019 | BettyDonWood | ||
| Unidentified | 16 Nov 2019 | JaneR |
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User's notes
Tiny plant, forming several mats around former farm dam, on soil exposed by falling water level and otherwise generally bare.
Tentatively identified as Glossostigma cleistanthum.
I dug up a bit of the plant and it had two rounded pedicellate appendages in the soil but my attempts to photograph these tiny structures were hopeless.
The grass leaf in one photo is Water Couch. The other photo has some senesced flowers.
4 comments
BettyDonWood
wrote:
19 Nov 2019
I IDd it as Glossostigma diandrum from the Plantnet key.
It states that Glossostigma diandrum pedicels (flower stalks) are 2-15 mm long and the fruit (seed cases) are erect in fruit and that Glossostigma cleistanthem pedicels (flower stalks) are 0-0.5 mm long and the fruit (seed cases) are downturned into the soil.
It states that Glossostigma diandrum pedicels (flower stalks) are 2-15 mm long and the fruit (seed cases) are erect in fruit and that Glossostigma cleistanthem pedicels (flower stalks) are 0-0.5 mm long and the fruit (seed cases) are downturned into the soil.
JaneR
wrote:
19 Nov 2019
Yes, on a second look at the description (rather than relying on the key), then this plant is consistent with G. diandrum as described in the last para in Flora Vic (on line) which says In "some Victorian and New Zealand material there is evidence of cleistogamous flowers, sometimes on plants also bearing normal flowers. Unlike those of Glossostigma cleistanthum, however, these flowers are prominently pedicellate".
The leaves and habit of this plant are rather different from G. diandrum from the same site photographed at the same time, also posted on CNM.
I have arranged with the Herbarium to take in some live material for them to look at, to-morrow.
The leaves and habit of this plant are rather different from G. diandrum from the same site photographed at the same time, also posted on CNM.
I have arranged with the Herbarium to take in some live material for them to look at, to-morrow.
JaneR
wrote:
20 Nov 2019
The Herbarium identified two species in the five bits of live material from the dam: Glossostigma diandrum and Glossostigma cleistanthum. The material that was G. cleistanthum was slightly higher up, mostly as understorey to sedges: in the photograph it is yellowing because it is beginning to senesce as soils dry out and weather hots up. Glossostigma diandrum patches were on exposed muds, generally lower down the slope, and still vigorous.
I have replaced the photographs inserted originally (which may have been a mix of two Glossostigma species as the leaf looked like G. cleistanthum but the pedicellate fruit more like G. diandrum) with one of where the live material of G. cleistanthum was collected (but Elatine gratioloides also present).
I have replaced the photographs inserted originally (which may have been a mix of two Glossostigma species as the leaf looked like G. cleistanthum but the pedicellate fruit more like G. diandrum) with one of where the live material of G. cleistanthum was collected (but Elatine gratioloides also present).
Location information
- Coordinates 149.165344-35.235203
- Altitude 617.4m
- Maps Watson Woodlands
- Places Watson, ACT
Sighting information
- 16 - 100 Abundance
- 16 Nov 2019 11:32 AM Recorded on
- JaneR Recorded by
-
Collections
Plants Other Fresh Water Plants JaneR Canberra & Southern Tablelands NatureMapr
Additional information
- True In flower
- Less than 10cm Plant height
Species information
- Glossostigma cleistanthum Scientific name
- Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- 617.43m Recorded at altitude
- Machine learning
-
In flower
- External link More information
Record quality
- Images or audio
- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
- GPS evidence of location
- Description
- Additional attributes
