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PeaBossiaea sp.

Unnamed at Mulligans Flat

Bossiaea sp. at Mulligans Flat - 12 Sep 2016

Identification history

Pea Bossiaea sp. 8 Oct 2016 MichaelMulvaney
Pea Bossiaea prostrata 13 Sep 2016 BettyDonWood
Pea Bossiaea buxifolia 12 Sep 2016 michaelb
Unidentified 12 Sep 2016 JasonC

7 comments

   13 Sep 2016
The easiest way to tell these two species apart is to look at the back of the upright petal (standard). The back of B. prostrata is pinkish red, that of B. buxifolia is brown. There is also a difference in the way the leaf attaches to the stem. In B. prostrata, there is an angled joint between the leaf and the stem. In B. buxifolia, the leaf merges smoothly into the stem.
KenT wrote:
   13 Sep 2016
Hi Betty, I find separating these two species difficult using the floras I have (PlantNET [PN], Flora of Victoria [FoV] and Dorothy Woolcock’s ‘A field guide to Native Peaflowers of Victoria and Southeastern Australia [DW]). When trying to use these sources the colours seemed to be too variable or inconsistent to be relied upon (see selected characters below). Also all too often a character is described in detail for one species and not mentioned for the other species – it makes it hard. The last example I reported I went with the PlantNET key and went with petiole length as my primary character – but not fully convinced I got it right (see http://canberranaturemap.org/Community/Sightings/Details/3346698 ). So I’m wondering if your characters are based on observation of local plants?
Bossiaeae buxifolia - Petiole: short [PN (c. 1 in key)] [FoV]. Pedicel length: 6–10 mm [PN], (3–)5–20 mm [FoV]. Standard outside colour: dark [PN], suffused red [FoV], dark [DW]. Keel: purplish [PN], dark red [DW].
Bossiaeae prostrata - Petiole: to c. 5 mm [PN (2-5 in key)] [FoV]. Pedicel length: 10–20 mm [PN], [FoV]. Standard outside colour: pinkish brown [PN], suffused red and brown [FoV], reddish-brown [DW]. Keel: purplish brown [PN], dark red [DW].
   13 Sep 2016
Ken I was quoting from what I wrote in Flowers of the ACT and region (standard colour) and Flowers of the South Coast and Ranges of NSW vol. 3 (leaf stalk). I am away at present. I might have got the standard colour from Flora of the ACT. The description of the petiole if I remember correctly was based on the fact that B. prostrata is one-foliolate (compound with one leaflet) and B. buxifolia has leaves.
   13 Sep 2016
Jason, I suppose the upshot of this discussion is that in order to identify this plant at species level, we need a photo showing clearly whether the leaf stalk is jointed or not. A photo of the back of a flower and one showing clearly how long a flower stalk is would help. Field notes on leaf length and flower stalk length also.
KenT wrote:
   13 Sep 2016
I had a look at the Flora of the ACT (1979 reprint) and it does give the back of the standard for Bossiaea prostrata as pinkish-red and that of Bossiaea buxifolia as brown. It also gives the stipule as being longer than the petiole for Bossiaea buxifolia and shorter than the petiole for Bossiaea prostrata. However, the usefulness of stipule length as a character seems to vary between floras e.g. Bossiaeae buxifolia – Stipules: setaceous or narrow-triangular, exceeding petiole [FoV], stipules 1–2 mm long [PN]. Bossiaeae prostrata – Stipules: narrow-ovate, 1–2 mm long [FoV], stipules 1–2 mm long [PN].
JasonC wrote:
   13 Sep 2016
i will be in the Sanctuary again - let me know if you need more info - if this is an important record, if it is [in either case] a common spp. i won't bother going back, but if in either case it is an important record i am happy to do so
   14 Sep 2016
Jason, I would not call it an important record, though it would be nice if it was Bossiaea prostrata, which is nowhere near as common in the ACT as Bossiaea buxifolia.
Ken, from what you have found in the various books, there is a lot of local variation. Myself, I would stick with what is in Flora of the ACT.

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Nearby Sightings

Page 1 of 1 pages - image sightings only 127 0 9

Trichosurus vulpecula (Common Brushtail Possum) at Mulligans Flat - 20 Apr 2019 Dacelo novaeguineae (Laughing Kookaburra) at Mulligans Flat - 27 Nov 2018 Dacelo novaeguineae (Laughing Kookaburra) at Mulligans Flat - 4 Sep 2018 Bettongia gaimardi (Southern Bettong) at Mulligans Flat - 11 Aug 2018 Wallabia bicolor (Swamp Wallaby) at Mulligans Flat - 17 Apr 2018 Salticidae (family) (Unidentified Jumping spider) at Mulligans Flat - 27 Mar 2018 Atrapsalta furcilla (Southern Mountain Squeaker) at Mulligans Flat - 20 Nov 2016 Hypoxis hygrometrica (Golden Weather-grass) at Mulligans Flat - 12 Sep 2016 Ramaria sp. (A Coral fungus) at Mulligans Flat - 5 Aug 2016
Trichosurus vulpecula (Common Brushtail Possum) at Mulligans Flat - 20 Apr 2019
Dacelo novaeguineae (Laughing Kookaburra) at Mulligans Flat - 27 Nov 2018
Dacelo novaeguineae (Laughing Kookaburra) at Mulligans Flat - 4 Sep 2018
Bettongia gaimardi (Southern Bettong) at Mulligans Flat - 11 Aug 2018
Wallabia bicolor (Swamp Wallaby) at Mulligans Flat - 17 Apr 2018
Salticidae (family) (Unidentified Jumping spider) at Mulligans Flat - 27 Mar 2018
Atrapsalta furcilla (Southern Mountain Squeaker) at Mulligans Flat - 20 Nov 2016
Hypoxis hygrometrica (Golden Weather-grass) at Mulligans Flat - 12 Sep 2016
Ramaria sp. (A Coral fungus) at Mulligans Flat - 5 Aug 2016

Page 1 

Location

Location information

Species information

  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 16 - 100 Abundance
  • 12 Sep 2016 8:00 PM Recorded on
  • JasonC Recorded by
  • Mobile app Reported via
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