Pelargonium caledonicum L. Bol.
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Campylia
Chorisma
Ciconium
Cortusina
Glaucophyllum
Hoarea
Isopetalum
Jenkinsonia
Ligularia
Myrrhidium
Otidia
Pelargonium
Peristera
Polyactium
Reniformia
Subsucculentia


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South African Gardening and Country Life 22 (1932) 229, 232.
Section Hoarea

Habit
Acaulescent geophyte.


Leaves
Lamina varies from simple to pinnate or bipinnatisect, ovate to narrowly ovate in outline, 40-80 x 15-30 mm, pinnae 8-25 mm long, 1-1.5 mm wide, densely hirsute with long stiff appressed hairs. Petiole 40-85 mm, erect. Stipules subulate, adnate to petioles for 1/2 - 2/3 of their length.


Inflorescence
Scape, bearing 2-3 pseudo-umbellets, each 2-7-flowered. Pedicel cca. 0.5 mm.


Sepals
5, posterior usually triangular, 5-8 x 1-3.2 mm, posterior erect, others recurved. Hypanthium 6-16 mm, reddish brown to wine-red.

Petals
5, pink to pale pink with conspicuous wine-red markings in the centre, sometimes leaving only a narrow pink margin, patent during anthesis. Posterior two ligulate or narrowly spathulate, apices rounded, truncate or emarginate, 7-16 x 2.2-4 mm. Anterior three narrowly spathulate, bases attenuate, apices rounded, 7-15 x 1.5-2 mm.

Stamens
5 fertile, concealed within the floral sheath, posterior one 1.5-4 mm, lateral two 2-4.5, anterior two 2-5 mm.

Distribution


Habitat


P. caledonicum does not have a very wide wide distribution, possibly because the Overberg region of the Western Cape is so intensively farmed. Here a photograph from Shaw's Pass, the locus classicus for this species. A typical example of heterophylly typical of some hoareas, e.g. P. longifolium, P. longiflorum or P. proliferum: some years, pinnate leaves develop, other years not, which has lead to much taxonomic confusion.

Literature

E. M. Marais, Taxonomic Studies in Pelargonium, Section Hoarea (Geraniaceae), PhD Thesis, University of Stellenbosch, 1994.

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