Sunday, 27 August 2017

Seaslopes grassland revisited (Thursday 24 August 2017)

On this occasion, armed with more information about proposed alignments for the pipeline crossing these grasslands between the upper and lower reservoir sites, we went to investigate which of the alignments would, in our opinion, have the least environmental impact on this site.

As before, we entered the site from the lower (eastern) corner but on this occasion we headed directly for the gum plantations situated on the highest parts of the site. Next to the track were a few Eriosema parviflora in bud. As we neared the wetland we came across several Kniphofia rooperi in flower and nearby were some white-flowered Eriospermum cooperi.


Eriosema parviflora

Kniphofia rooperi

Eriospermum cooperi

Working our way past some Tephrosia grandiflora on the climb up the slope towards the first gum plantation we encountered a few stakes with hazard marking - presumably a proposed alignment -  but not one of the two main alternatives we were to investigate. We proceeded up into the gums noting the scarcity of forbs other than weeds and then walked to the top reservoir. From here we could see some markers that we decided were those indicating the route of the existing pipe servitude between the two reservoir complexes.

Walking this route, we could soon see that this was secondary grassland and very species-depauperate. There was a big patch of Chromolaena odorata and Lantana camara along this route and after that more secondary grassland all the way to the lower reservoirs.

There were a few imposing specimens of Scadoxus puniceus close to the reservoirs and then we started seeing greater plant diversity with the usual mix of early spring forbs.


Scadoxus puniceus bud

By now a cold south-west wind was howling around us and making photography difficult so we took shelter in the lee of a rock outcrop and had lunch in the warm spring sunshine. At our feet were several Euphorbia flanaganii, one in flower. On the slope opposite us we could see clusters of orange flowers which we thought might be Tritonia gladiolaris but on closer inspection these turned out to be two species of Berkheya - B. insignis and B speciosa.



Euphorbia flanaganii


Berkheya insignis

Berkheya speciosa
 
Sheltering from the wind

As it was still early when we finished this walk, we decided to return to Seaview farm to get accurate GPS coordinates on some of the threatened species. While we were doing this we came across an additional species of conservation concern, Rhynchocalyx lawsonoides. We also found the short-spurred form of Eulophia parviflora, the first for this spring season.

 
Eulophia parviflora (short spurred form)

Later, on the way home we chanced across a population of yellow flowers at the roadside. These turned out to be Eriosema luteopetalum, one of the more imposing Eriosema.



Eriosema luteopetalum

Participants: Anne S, Gail B-W, Graham G, Kate G, Maggie A, Phakamani M, Uschi T.

Friday, 18 August 2017

A pre-construction survey of Seaview Farm

With the planning for a new 600 mm water pipeline for Ugu District Municipality almost at the final stages, we undertook an inspection of the flora on a pristine grassland section on the farm Seaview, which potentially could be impacted by the construction of the pipeline.

We made an early start as there was potential for rain with the cold front headed up the coast. This section of grassland was burned some time earlier and is now starting to show many of our early spring flowering species. Overnight rain, heavy overcast conditions and a blustery wind made it difficult to get good photos but we were soon recording species at a good rate.

One of the first species to catch our attention was Thunbergia atriplicifolia, accompanied by many of the common spring species, such as Gerbera ambigua, Ocimum obovatum, Hilliardiella oligocephala, and Lasiosiphon kraussianus. Other species seen as we worked our way over a rocky rise were Eriospermum mackenii, Chlorophytum cooperi, Hypoxis hemerocallidea and Senecio oxyrifolius.

Thunbergia atriplicifolia


Eriospermum mackenii

Chlorophytum cooperi

Senecio oxyrifolius
 
Hypoxis hemerocallidea


On the top of the rise there were a few bush clumps that we explored. Here we found Haemanthus albiflos and Scadoxus puniceus secreted under the shrubs. One shrub led to some debate - it appeared to be one of the Myrtaceae; it had some features of Syzygium pondoensis and others from Eugenia verdoorniae, but the habitat was wrong for both these species. After consultation later this turned out to be Eugenia simii, a Vulnerable KZN and Pondoland endemic. Unfortunately there was no fertile material for a voucher collection.

Over the top of the rise and heading down to denser riverine forest along the Ivungu River, we saw some Tritonia gladiolaris - these were a lighter shade of orange than we have seen in the past, but still orange rather than yellow which is the "normal" colour for the species.


Tritonia gladiolaris

Nearby we found a single Tephrosia macropoda in flower sprawled over a rock.



Tephrosia macropoda

We then spent time investigating the trees growing on the steep rocky banks above the Ivungu River before working our way down the slope to the river. We were able to get to a small island but could not cross the river without getting wet - not to be considered on this cold and blustery day.

Still the views up and down the Ivungu River here were very pleasant. It is surprising that this site is only a couple of hundred metres from the Masanenge housing development just outside Margate. Growing on the island we found Thunbergia alata - "black-eyed Susan" climbing over the reeds.


Thunbergia alata


View upstream along the Ivungu River

Looking downstream along the Ivungu River

Unsurprisingly, there were a number of Invasive Alien Species along the river banks, including Hedychium gardnerianum. Unable to proceed any further, we turned back. As we scrambled back up the steep bank we were rather surprised to come across Plectranthus oertendahlii, a Rare Pondoland endemic.


Plectranthus oertendahlii

On the way back to the vehicle we found a few Eulophia parviflora and a single, rather stunted, Gladiolus wilsonii.



Gladiolus wilsonii

From this brief visit we were able to compile a list of over 200 species, some of which are of conservation concern. Hopefully this will be taken into account when the final decisions are made on the routing of the pipeline project.





Participants: Anne S, Graham G, Kate G, Maggie A, and Uschi T.

Monday, 14 August 2017

Decending into the Mzamba River gorge (Thursday 10 August 2017)

The original post on this walk somehow was overwritten by the contents of another post, and this is my best effort to reconstruct the post.

We decided it was time to revisit the Ngonyama Gorge and a small group of us braved the Stop/Go signs on the R61 on our way there. After one or two missed turns we arrived at a rural dwelling where we arranged to park.

Arranging parking

We set off towards what we thought might be a more accessible decent into the Ngonyama gorge, stopping along the way to look at the trees in one of the watercourses. Here we saw Diospyros villosus in fruit and Flagellaria guineensis in flower. 

Diospyros villosus fruits
 
Flagellaria guineensis flower

From here we ascended to a plateau where we saw Gladiolus wilsonii and Indigofera rubroglandulosa and numbers of Clutia disceptata in flower. Phakamani found a Eulophia hians and then we came across a low mound which had a number of shrubs growing on it. Amongst these were a Ehretia rigida in flower, an a Sideroxylon inerme in fruit.

Clutia disceptata

Ehretia rigida

We walked further to a low scarp where we found Haemanthus albiflos and Mimusops obovata flowers. Nestling in the grass at the base of one of these shrubs were a number of Bonatea boltonii.

Haemanthus albiflos

Mimusops obovata

Bonatea boltonii

At the bottom of this low scarp we saw bright red seeds of a Stangeria eriopus and while we were looking at this Gail found an interesting orchid - clearly a Disperis but not one we knew. After consulting references later we determined that this was Disperis woodii - a great find as there are not many locations known for this species.

Stangeria eriopus fruits

Disperis woodii

We worked our way around towards the Ngonyama gorge and found a route down to near the waterfall - from here we had a good view of the waterfall and the gorge below but there did not seem to be an easy route down into the gorge. Chris clambered around some rocks and found a cave with a view down into the Mzamba River gorge.


Ngonyama falls


Chris in his man-cave

We decided that it would be easier to take a path we had seen earlier and follow this down into the Mzamba gorge and possibly make our way up the Ngonyama river from there. On the way down the steep path through the forest we came across a Manilkara nicholsonii. We eventually reached the river finding numbers of Cyrtanthus mackennii amongst the coarse riverside-grass. Here we also saw Gymnosporia bachmannii, Lugwigia octovalvis and Syzygium pondoensis.


Cyrtanthus mackennii
 
Ludwigia octovalvis

The river looked too inviting so pretty soon everyone had shoes off and feet in the water while we had our lunch. Chris wandered off and soon returned, first with a Spiny agama and then later he managed to catch a Spiny agama and a little later he returned with a rather smelly Cape terrapin in his hands.

Lunch time at the Mzamba river.

Mzamba river

Spiny agama

Cape terrapin

Watch what happened when he released the terrapin.

After botanising for a while along the river banks we found an Eriosema psoraloides in fruit.

Eriosema psoraloides fruits

We decided it was better to defer our attempt to walk up the Ngonyama gorge to another date so we set off back up the path to the top. Once at the top we worked our way along the steep drop-off down into the Ngonyama. Here we were luck to find the unobtrusive Brachystelma pygmaeum in flower.

Catching our breath after emerging from the gorge

Brachystelma pygmaeum

Our walk back to the vehicle gave us these views of a herdsman returning home with his cattle.

Homeward bound cattle and herdsman (photo Gail B-W)

Homeward bound walkers (photo Gail B-W)

Participants: Anne S, Gail B-W, Graham G, Kate G, Phakamani M.

Friday, 4 August 2017

Flowering now (August 2017)

It should be noted that these "Flowering now" posts are dealt with incrementally, i.e., new species are added as they are seen each month so readers will not necessarily see all species for the month with a single visit to that post. Also note that we try to avoid including species seen in the previous month, unless the species is particularly notable.


Alberta magna

Argyrolobium harveyanum

Aristea torulosa

Aspalathus gerrardii

Asparagus africana

Asparagus setaceus

Berkheya insignis

Berkheya speciosa

Bonatea boltonii

Brachystelma pygmaeum subsp. flavidum

Cadaba natalensis

Caesia contorta

Carissa wyliei (sunk into Carissa bispinosa)

Carpha angustifolia

Chlorphytum cooperi

Clutia disceptata

Cotyledon orbiculata

Cyanotis speciosus

Cyrtanthus mackenii

Delosperma ecklonis

Diospyros villosa (new leaves)

Dipcadi viride

Disa baurii

Disperis woodii

Drimia calcarata

Drimia depressa

Drimia echinostachya
 
Drimia elata

Ehretia rigida

Eriosema luteopetalum

Eriosema parviflorum

Eriosema psoraleoides

Eriospermum cooperi 

Eriospermum mackenii

Eugenia umtamvunensis

Eulophia parviflora (short spur)

Euphorbia flanaganii

Euphorbia guenzii

Flagelaria guineense

Geranium flanaganii

Gerbera natalensis

Gladiolus longicollis

Gladiolus wilsonii

Graderia scabra 

Haemanthus albiflos

Helichrysum ecklonis

Helichrysum nudifolium var oxyphyllum

Helichrysum nudifolium var. pilosellum

Helichrysum pallidum 

Helixanthera woodii fruits

Hypoxis costata

Hypoxis hemerocallidea

Indigofera rubroglandulosa

Kniphofia rooperi

Kohautia amatymbica

Lasiosiphon anthylloides 

Ledebouria ovatifolia

Ludwigia octovalvis

Merwilla kraussii (plumbea)

Mimusops obovata

Nuxia floribunda

Ochna natalitia

Ocimum obovatum

Osmunda regalis

Oxygonum dregeanum

Pentanisia angustifolia

Phaulopsis imbricata

Plectranthus oertendahlii

Polystachya pubescens

Ruellia cordata

Scadoxus puniceus

Schizoglossum atropurpureum subsp. virens

Senecio speciosa 

Sopubia simplex

Stangeria eriopus seeds

Tephrosia macropoda

Tetradenia riparia

Thunbergia alata

Thunbergia atriplicifolia

Tritonia gladiolaris

Watsonia mtamvunae

Xyris capensis