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Electronic Flora of South Australia infraspecific Fact Sheet

Caladenia dilatata dilatata

Citation: Ill. Fitzgerald (1877) Australian orchids, vol. 1, pt 3; Ewart (1931) Flora of Victoria, fig. 159; Cunningham et al. (1982) Plants of western New South Wales, p. 195.

Synonymy: Not Applicable

Common name: None

Description:
Stem 10-50 cm high; leaf very hairy, oblong to elliptical or lanceolate, often to 20 mm wide.

Flowers 1 or 2 rarely 3, green, white, yellow and maroon; dorsal sepal loosely erect, 2-6 cm, lower half dilated then contracted into long filiform clubbed points; lateral sepals similar, 3-8 cm, at first depressed, the points spreading, often falcate, sometimes crossed, the tips clubbed; petals shorter, rarely clubbed; labellum variable in size, usually green and white with a maroon recurved apex, the margins deeply combed or at least serrulate; calli club-shaped in 4 well defined rows, hardly extending past the bend, those near the base often much larger and fleshy; anther with a well developed mucro.

Distribution:  Occurs in small to large populations in a wide variety of habitats from littoral to inland rock outcrops and mountain ridges.

  All States except the N.T.

Flowering time: late Aug. — Dec.

Biology: A common, polymorphic variety in S.Aust. Some specimens from the Mt Lofty Ranges are almost inseparable from var. falcata Nicholls from W. Aust. Teratological freaks are infrequently encountered in which all petals are transformed (either partly or wholly) into labella. This occurs in other species of Caladenia also. Putative hybrids have been reported with C. cardiochila (MU), C. gladiolata (FR) and C. patersonii (SL, SE).

Author: Not yet available


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