Geophytes and other tuberous plants in woodland of Eucalyptus wandoo in southwestern Australia

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 ( and and of any land on Earth at temperate latitudes.

However, there is a minor 'scarp' east of Perth, called the Darling Range (, in association with which some of the slopes are steep enough for the lateritic profile to have been partly eroded (

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 (

On the slightly nutrient-rejuvenated substrates, the vegetation includes woodland of Eucalyptus wandoo ( and and 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

  • true geophytes,
  • members of the same genera that do not qualify as geophytes, and
  • tuberous plants, of different genera, that do not qualify as geophytes.



Burchardia multiflora
in gulley

Wurmbea dioica
in gully

Wurmbea tenella
on ridge


Caesia parviflora

Chamaescilla corymbosa and
in gully

Tricoryne humilis


Dichopogon capillipes
on ridge

Sowerbaea laxiflora
in gully

Thysanotus patersonii


Pauridia occidentalis
in gully

Orchidaceae (partial list):

Caladenia sericea

Cyrtostylis reniformis
in gulley

Pterostylis vittata


Ptilotus manglesii
tuberous taproot


Eryngium pinnatifidum
tuberous taproot
in gulley


Stylidium petiolare
ovoid corm, 0.15 cm diam.


Lagenophora huegelii
numerous root-tubers

Trichocline spathulata
adventitious root-tubers

TUBEROUS but apparently not geophytic:

Thysanotus tenellus

Thysanotus thyrsoideus and


Drosera gigantea
in gully, where seasonally wet
tubers of diam. up to 3.8 cm, as deep as 1 m

Drosera menziesii
seasonally moist and swamp margins

Drosera pallida

NOT GEOPHYTIC/TUBEROUS, despite belonging to the genera/families containing geophytes:

Haemodorum laxum

Platysace juncea
(tuberous taproot, but hemicryptophyte instead of geophyte)

Drosera leucoblasta

Stylidium amoenum
Stylidium affine
Stylidium caricifolium (not usually geophytic although possessing numerous root-tubers)
Stylidium dichotomum
Stylidium diversifolium
Stylidium junceum
Stylidium piliferum
Stylidium schoenoides
Stylidium uniflorum

Craspedia uniflora
(adventitious root-tubers, in gully)

Pelargonium littorale
(not tuberous)

Oxalis corniculata
(not tuberous)

Clematis pubescens
root-tuberous, but foliage perennial

Tuberous with no possibility of geophytic affinity:

Macrozamia riedlei

Publicado el diciembre 1, 2022 10:54 TARDE por milewski milewski



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

Publicado por milewski hace más de 1 año

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

Publicado por milewski hace más de 1 año

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

Publicado por milewski hace más de 1 año
Publicado por milewski hace más de 1 año
Publicado por milewski hace más de 1 año

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