A Guinea-Flower at Yass River, NSW
Identification history
| Hibbertia monogyna | 5 Nov 2019 | BettyDonWood | ||
| Hibbertia monogyna | 4 Nov 2019 | SenexRugosus |
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5 comments
BettyDonWood
wrote:
6 Nov 2019
Even though this flower has 3 carpels I can see, I have confirmed monogyna. Don photographed and we collected a plant at Bomaderry Reserve north of Nowra that also had 3 carpels, and the herbarium here in Canberra IDd it as monogyna. The Vicflora key only mentions the number of carpels at couplet 1, and then as the general group with 3 carpels, rarely 1-5. However, at a later couplet, it states the leaves are stem-clasping. I do not think these are. The other half of that couplet asks about star-shaped hairs on the branches. None of the photos are clear enough to determine that.
Hibbertias are an extremely difficult group, even in the hand, a lot of the IDing being based on the presence/absence of star-shaped or simple hairs. In photos that means an excellent closeup or a high resolution photo of a leaf, stem, sepals, and/or ovary.
The obtusifolia group usually has 30-40 stamens, not about 12, as this flower has.
Hibbertias are an extremely difficult group, even in the hand, a lot of the IDing being based on the presence/absence of star-shaped or simple hairs. In photos that means an excellent closeup or a high resolution photo of a leaf, stem, sepals, and/or ovary.
The obtusifolia group usually has 30-40 stamens, not about 12, as this flower has.
SenexRugosus
wrote:
6 Nov 2019
Thanks Betty. We have a large number of these currently in flower. As far as I can see, most have three carpels and a dozen or so stamens. I'll try to get better photos. For reasons best known to itself, my camera has difficulty focussing on yellow!
BettyDonWood
wrote:
6 Nov 2019
It would be worthwhile for you to collect and press a couple of specimens in flower together with a reasonable bit of stem and take them to the botanic gardens for ID. The usual size of a pressed specimen fits the size of a tabloid newspaper. I used to use about 5 sheets of the Canberra Chronicle on each side in my plant press. Otherwise a specimen that fits your biggest heavy book makes a good pressed specimen.
Unless you have a really good camera these days, a phone usually takes better photos.
Unless you have a really good camera these days, a phone usually takes better photos.
SenexRugosus
wrote:
8 Nov 2019
Good advice. We have a huge number of Hibbertias in flower at the moment. Many look very similar, but with some subtle differences.
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Nearby sightings
Location information
- Coordinates 149.159832-34.893612
- Maps Rugosa
- Places Yass River, NSW
Sighting information
- 16 - 100 Abundance
- 31 Oct 2019 09:14 AM Recorded on
- SenexRugosus Recorded by
Additional information
- True In flower
- 10cm to 30cm Plant height
Species information
- Hibbertia monogyna Scientific name
- A Guinea-Flower Common name
- Not Sensitive
- Local native
- Non-invasive or negligible
- Up to 533.1m 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
