Witchgrass at Watson, ACT
Identification history
| Panicum capillare | 12 Feb 2024 | abread111 | ||
| Panicum effusum | 3 Feb 2024 | waltraud |
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User's notes
In patches along road side; seed heads break off easily.
11 comments
waltraud
wrote:
4 Feb 2024
I checked the widely spaced hairs at the leaf margins and of course the finely branched seed heads with single fruits. Will collect specimen and scan. Hairy Panic is a perennial warm season grass but I don't know how to check whether a grass is perennial or annual. So I check the floristic characteristics above ground to suggest a species.
waltraud
wrote:
4 Feb 2024
Hm ... such as Serrated tussock? whether pulling out is easy or not easy seems a bit subjective to me; may be it can help as an additional feature to other characteristics as described above?
abread111
wrote:
4 Feb 2024
I meant particularly for hairy panic. The differences are a bit subtle. See sightings 4365124
and 4365121 The annual one is also commonly called hairy panic by the cropping people who have to deal with it.
and 4365121 The annual one is also commonly called hairy panic by the cropping people who have to deal with it.
waltraud
wrote:
4 Feb 2024
sorry, Barb, the ST was a joke ... I often pull the perennial ST out easily when they are young and therefore find this characteristic not particularly useful. I will check the differences between P effusum and P capillare but what I can already see is that P capillare has wider leaf blades >5mm. I will take a sample just in case; there is only one P capillare record on CNM.
abread111
wrote:
4 Feb 2024
No! there are 1 P capillare + 30 - see Panicum capillare/hillmanii and some of these 30 are quite recent ones. There is a problem that the species/9640 comes up in Add a sighting but returns an error in the Quick Search.
@Tapirlord @natureguy can you investigate and get fixed please?
Barbara
@Tapirlord @natureguy can you investigate and get fixed please?
Barbara
waltraud
wrote:
4 Feb 2024
Yes I tried search function for P. capillare and for P. hillmanii as well as P. capillare/hillmanii; the latter didn't give returns. Is this a species on its own or are the characteristics of the two so close that there it was not possible to differentiate from photos?
I will make an effort to collect samples tomorrow and measure and scan the leaves.
I will make an effort to collect samples tomorrow and measure and scan the leaves.
abread111
wrote:
4 Feb 2024
Yes, its apparently hard to differentiate them - both invasive annuals. See description in VicFlora https://vicflora.rbg.vic.gov.au/flora/taxon/fdbafeee-1653-4bc8-bf9b-72a2ce37e27d which points out the differences and the comment for Panicum hillmanii which mentions one difference.
isobellcrawford
wrote:
12 Feb 2024
Both collections key to P. capillare var. capillare: the wider-leaved (to 6.8 mm) material looks annual, as does the narrower leafed one (blades to 5.3 mm wide).
dimensions: spikelet 2.1–2.2 mm long;
lower glume 0.85–1.0 mm long, 3–5-n;
upper gl. 1.85–2.2 mm long, 7-n;
lower sterile lemma 1.5–1.85 mm long, 7-n;
lower palea to 1.0 mm long, white, membranous;
upper fertile lemma and palea to 1.35 mm long, and faintly striate.
dimensions: spikelet 2.1–2.2 mm long;
lower glume 0.85–1.0 mm long, 3–5-n;
upper gl. 1.85–2.2 mm long, 7-n;
lower sterile lemma 1.5–1.85 mm long, 7-n;
lower palea to 1.0 mm long, white, membranous;
upper fertile lemma and palea to 1.35 mm long, and faintly striate.
Location information
- Coordinates 149.151992-35.230675
- Altitude 588.0m
- Places Watson, ACT
Sighting information
- 101 - 1,000 Abundance
- 3 Feb 2024 11:14 AM Recorded on
- waltraud Recorded by
-
Collections
Plants Grasses waltraud
Species information
- Panicum capillare Scientific name
- Witchgrass Common name
- Not Sensitive
- Exotic
- Medium weed or pest
- 578m to 588.01m Recorded at altitude
- Machine learning
- 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
