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WHAT DOES THAT MEAN?

By Wayne Handlos

Over the years we have done a series of articles giving the definitions of some of the scientific names of various species of Pelargonium. Here we continue that series with the species grouped by the latest taxonomic version of the various sections (subdivisions) of the genus Pelargonium.

  < P. hirtum        P. pulchellum >

SECTION LIGULARIA

P. appendiculatum – with appendages (large stipules)

P. crassipes – thick (stem)

P. fulgidum – brightly colored flowers

P. hirtum – hairy

P. hystrix – porcupine (spiny persistent stipules)

P. oreophilum – loving mountains

P. pulchellum – small and beautiful

P. sericifolium – silk-like leaves

P. stipulaceum – with stipules

P. torulosum – small and cylindrical with swellings and constrictions

SECTION GLAUCOPHYLLUM

P. fruticosum – shrub like

P. grandiflorum – large flowers

P. laevigatum – smooth, succulent

P. lanceolatum – lanceolate shape

P. patulum – spreading

P. tabulare – from Table Mountain, South Africa

P. ternatum – divided into three

SECTION PERISTERA

< P.  australe

P. australe – southern

P. chamaedryfolium – leaf resembling Chamaedrys (now Teucrium)

P. columbinum – dove (also known as the dove’s foot cranesbill)

P. drummondii – Australian botanist James Drummond

P. grossularioides – like gooseberry (leaf)

P. inodorum – scentless

P. iocastum – violet

P. minimum – very small

P. nanum – dwarf

SECTION HOAREA (about 70 species)

P. aciculatum – with fine streaks

P. aestivale – appearing in summer

P. asarifolium – leaf like Asarum

P. auritum – eared or auriculate

P. incrassatum – thickened (tubers)

P. longifolium – long leaves

P. oblongatum – oblong (tuber)

P. pinnatum – pinnate leaves

P. punctatum – spotted (dots on the petals)

P. rapaceum – turnip shaped (tubers)

SECTION CHORISMA

<P. exibens    < P. mollicomum >   P. worcesterae >

P. exhibens – exserted stamens

P. mollicomum – softly hairy (leaves)

P. tetragonum – four angled

P. worcesterae – from Worcester

SECTION SUBSUCCULENTIA

P. grandicalcaratum – with a large prominent hypanthium

P. karooicum – from the karoo (an area and vegetation type in South Africa)

P. otaviense – from the Otavi Mountains in Namibia

P. spinosum – with spines (formed from persistent petioles)

SECTION ISOPETALUM

P. cotyledonis – (leaves like) Cotyledonis

SECTION OTIDIA

P.  carnosum >    P. laxum >

P. alternans – alternate (leaf arrangement)

P. carnosum – succulent

P. ceratophyllum – antler-like leaves

P. crithmifolium – leaves like Crithmum (samphire)

P. dasyphyllum – hairy leaves (but invisible?)

P. humansdorpense – from Humansdorp

P. klinghardtense – mountain range in Namibia

P. laxum – spreading/open inflorescence

P. paniculatum – repeatedly branched inflorescence

SECTION CAMPYLIA (11 spp)

P. coronopifolium – leaves like Coronopus, a European plant

P. oenothera – (leaves like) Oenothera, an evening primrose

P. ovale – oval (leaf)

P. tricolor – three colored (flower)

SECTION JENKINSONIA (11 spp)

P. praemorsum >                   P. tenuicaule >

P. praemorsum – bitten off (jagged leaf tips)

P. tenuicaule – long, thin stems

P. trifidum – three-parted (leaves)

SECTION MYRRHIDIUM (8 spp)

P. caucalifolium – leaves like Caucalis (a carrot relative)

P. myrrhifolium – leaves like myrrh

P. suburbanum – growing in urban areas

© 2014, Central Coast Geranium Society (CCGS )