The southwestern region of Western Australia, with its mediterranean-type climate, is generally flat, and nutrient-poor.
The land surface is ancient, with the most extensive laterite (https://en.wikipedia.org/wiki/Laterite and https://bsssjournals.onlinelibrary.wiley.com/doi/abs/10.1111/j.1365-2389.1960.tb01080.x and https://www.researchgate.net/publication/229564960_Laterites_and_lateritic_soils_in_South-West_Australia) of any land on Earth at temperate latitudes.
However, there is a minor 'scarp' east of Perth, called the Darling Range (https://en.wikipedia.org/wiki/Darling_Scarp), in association with which some of the slopes are steep enough for the lateritic profile to have been partly eroded (https://www.foxeslair.org/why-are-wa-plants-and-soils-unique.html).
This has slightly rejuvenated the otherwise senile substrates, allowing a limited occurrence of small, herbaceous plants otherwise unable to compete with the sclerophyllous shrubs typical of the exceptionally phosphorus-poor laterite and siliceous sand (https://www.academia.edu/7565234/Ecology_of_Australia_the_effects_of_nutrient_poor_soils_and_intense_fires).
On the slightly nutrient-rejuvenated substrates, the vegetation includes woodland of Eucalyptus wandoo (https://heartlandjourneys.com.au/about-us/ancient-wonderland/wandoo/ and https://www.inaturalist.org/taxa/145451-Eucalyptus-wandoo and https://exploreparks.dbca.wa.gov.au/park/wandoo-national-park). The substrate is typically sandy loam over kaolinitic clay.
In this Post, I have compiled a list of the geoohytes in one study area of wandoo woodland, based on a report written for Worsley Alumina Pty Ltd. Perth (1985) Worsley Alumina Project, Flora and fauna studies, phase two. 348 pp.
I took trouble to distinguish between
GEOPHYTES:
Colchicaceae:
Burchardia multiflora https://www.inaturalist.org/taxa/773427-Burchardia-multiflora
in gulley
Wurmbea dioica https://www.inaturalist.org/taxa/504086-Wurmbea-dioica
in gully
Wurmbea tenella https://www.inaturalist.org/taxa/925387-Wurmbea-tenella
on ridge
Asphodelaceae:
Caesia parviflora https://www.inaturalist.org/taxa/323895-Caesia-parviflora
Chamaescilla corymbosa https://www.inaturalist.org/taxa/194766-Chamaescilla-corymbosa and http://esperancewildflowers.blogspot.com/2010/06/chamaescilla-corymbosa-var-corymbosa.html
in gully
Tricoryne humilis https://www.inaturalist.org/taxa/574684-Tricoryne-humilis
Asparagaceae:
Dichopogon capillipes https://www.inaturalist.org/taxa/511227-Dichopogon-capillipes
on ridge
Sowerbaea laxiflora https://www.inaturalist.org/taxa/205058-Sowerbaea-laxiflora
in gully
Thysanotus patersonii https://www.inaturalist.org/taxa/323937-Thysanotus-patersonii
Hypoxidaceae:
Pauridia occidentalis https://www.inaturalist.org/taxa/1062098-Pauridia-occidentalis
in gully
Orchidaceae (partial list):
Caladenia sericea
Cyrtostylis reniformis https://www.inaturalist.org/taxa/323904-Cyrtostylis-reniformis
in gulley
Pterostylis vittata
Amaranthaceae:
Ptilotus manglesii https://www.inaturalist.org/taxa/202127-Ptilotus-manglesii
tuberous taproot
Apiaceae:
Eryngium pinnatifidum https://www.inaturalist.org/taxa/511205-Eryngium-pinnatifidum
tuberous taproot
in gulley
Stylidiaceae:
Stylidium petiolare https://www.inaturalist.org/taxa/1071381-Stylidium-petiolare
ovoid corm, 0.15 cm diam.
Asteraceae:
Lagenophora huegelii https://www.inaturalist.org/taxa/511242-Lagenophora-huegelii
numerous root-tubers
Trichocline spathulata https://www.inaturalist.org/taxa/896463-Trichocline-spathulata
adventitious root-tubers
TUBEROUS but apparently not geophytic:
Thysanotus tenellus https://www.inaturalist.org/taxa/862769-Thysanotus-tenellus
root-tuberous
Thysanotus thyrsoideus https://www.inaturalist.org/taxa/859182-Thysanotus-thyrsoideus and https://florabase.dpaw.wa.gov.au/browse/profile/1357
Droseraceae:
Drosera gigantea https://www.inaturalist.org/taxa/739940-Drosera-gigantea
in gully, where seasonally wet
tubers of diam. up to 3.8 cm, as deep as 1 m
Drosera menziesii https://www.inaturalist.org/taxa/148225-Drosera-menziesii
seasonally moist and swamp margins
Drosera pallida https://www.inaturalist.org/taxa/511323-Drosera-pallida
NOT GEOPHYTIC/TUBEROUS, despite belonging to the genera/families containing geophytes:
Haemodorum laxum https://www.inaturalist.org/taxa/1143491-Haemodorum-laxum
Platysace juncea https://www.inaturalist.org/taxa/1004702-Platysace-juncea
(tuberous taproot, but hemicryptophyte instead of geophyte)
Drosera leucoblasta https://www.inaturalist.org/taxa/929602-Drosera-leucoblasta
Stylidium amoenum https://www.inaturalist.org/taxa/145399-Stylidium-amoenum
Stylidium affine https://www.inaturalist.org/taxa/145501-Stylidium-affine
Stylidium caricifolium (not usually geophytic although possessing numerous root-tubers)
Stylidium dichotomum https://www.inaturalist.org/taxa/145686-Stylidium-dichotomum
Stylidium diversifolium https://www.inaturalist.org/taxa/145694-Stylidium-diversifolium
Stylidium junceum https://www.inaturalist.org/taxa/565082-Stylidium-junceum
Stylidium piliferum https://www.inaturalist.org/taxa/567801-Stylidium-piliferum
Stylidium schoenoides https://www.inaturalist.org/taxa/145502-Stylidium-schoenoides
Stylidium uniflorum https://www.inaturalist.org/taxa/554214-Stylidium-uniflorum
Craspedia uniflora https://www.inaturalist.org/taxa/401147-Craspedia-uniflora
(adventitious root-tubers, in gully)
Pelargonium littorale https://www.inaturalist.org/taxa/735460-Pelargonium-littorale
(not tuberous)
Oxalis corniculata https://www.inaturalist.org/taxa/53168-Oxalis-corniculata
(not tuberous)
Clematis pubescens https://www.inaturalist.org/taxa/145426-Clematis-pubescens
root-tuberous, but foliage perennial
Tuberous with no possibility of geophytic affinity:
Macrozamia riedlei https://www.inaturalist.org/taxa/135854-Macrozamia-riedlei
Comentarios
https://onlinelibrary.wiley.com/doi/full/10.1111/jbi.12693
FLORA OF THIS STUDY AREA, part 1
The following plants occur in this study area:
Fabaceae (18 spp. in 10 genera in Faboideae alone):
Acacia alata
Acacia celastrifolia
Acacia dentifera
Acacia drummondii
Acacia extensa
Acacia nervosa
Acacia preissiana
Acacia pulchella
Acacia willdenowiana
Labichea punctata
Bossiaea eriocarpa
Bossiaea ornata
Chorizema aciculare
Daviesia cordata
Daviesia juncea
Daviesia decurrens
Daviesia preissii
Daviesia rhombifolia
Gompholobium marginatum
Gompholobium polymorphum
Gompholobium preissii
Hovea chorizemifolia
Isotropis cuneifolia
Kennedia coccinea
Kennedia prostata
Jacksonia alata
Sphaerolobium vimineum
Templetonia drummondii
https://onlinelibrary.wiley.com/doi/full/10.1111/jbi.12693
Part 2
Allocasuarina humilis
Cryptandra 2 spp.
Trymalium floribundum
Trymalium floribundum
Andersonia sp.
'Astroloma ciliatum', Styphelia tenuiflora, and 4 other spp.
Leucopogon capitellatus
Leucopogon oxycedrus
Leucopogon propinquus and 3 other spp.
Isotoma hypocrateriformis
Lobelia spp.
Leptomeria cunninghamii
Cassytha glabella
Acaena echinata
Dashorst G R M and Jessop J P (1990) Plants of the Adelaide plains and hills. Kangaroo Press, Kenthurst, NSW. 224 spp.
In the Adelaide area of South Australia, there occurs woodland similar to that of E. wandoo, although dominated by different spp. of eucalypts.
The following geophytes occur.
Dichopogon fimbriatum
Dichopogon strictus
Bulbine bulbosa (has a cluster of root-tubers)
Caesia calliantha
Chamaescilla corymbosa
Thysanotus patersonii
Wurmbea dioica
Calostemma purpureum (plant 14-50 cm high)
Hypoxis 2 spp.
Microseris lanceolata
Lagenophora huegelii
Lagenophora stipitata
Possibly not geophytic:
Ophioglossum lusitanicum has tubers
Isoetes drummondii has a 'rootstock'
Drosera macrantha is a small liane
Oxalis perennans is not geophytic
Craspedia glauca occurs here, but is an annual, not a geophyte
Ranunculus spp. are present, but probably not geophytic
Plantago gaudichaudii and Plantago varia are indigenous, with a meagre taproot
https://en.wikipedia.org/wiki/Lagenophora
A member of genus Thysanotus confirmed to be geophytic:
https://www.qld.gov.au/__data/assets/pdf_file/0034/269980/wang-silcock-thysanotus-admirabilis-v12-14-18.pdf
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