Pterygodium hallii (Schelpe) Kurzweil & H.P.Linder, Pl. Syst. Evol. 175: 217 (1991).
Homotypic Synonyms:
Anochilus hallii Schelpe, Contr. Bolus Herb. 10: 156 (1982).
Description:
Plants erect, to 500 mm; leaves 6-numerous, obscuring the stem, lanceolate to narrowly elliptic, acute to acuminate, to 180 x 35 mm. Inflorescences to c. 220 mm, many-flowered; bracts broadly ovate-acute, 18-27 x 8-14 mm. Flowers c. 30 x 15 mm, mostly green, lip densely spotted dark purple. Median sepal narrowly to broadly elliptic, subtruncate, 7-10 x 3-4 mm, adnate to the petals; lateral sepals reflexed, lanceolate, acute, saccate, 10-13 x 2-3 mm. Petals rotund, shallowly concave, 8-14 x 6-10 mm. Lip broadly obovate, emarginate, 4-6 x 4-8 mm; appendage mitre shaped, 6-8 x 4-5 mm, with 2 keels basally. Stigma lobes elliptic, c. 2 mm long, behind lip appendage; rostellum c. 2 mm tall, arms c. 3 mm long.
Habitat:
It grows in varied soils in karroid and renosterveld shrubland to strandveld from the Western Cape to Kamiesberg in Namaqualand and the southern Richterveld and east to the Karoo.
Phenology:
Flowering from (August-) September to October.
Notes:
Similar to Pterygodium inversum, but is usually found on heavier soils, and also ranges further inland.
Distribution:
W. Cape Prov.
References:
Orchids of Southern Africa by H. P. Linder; H. Kurzweil Published by A.A. Balkema, Rotterdam (1999); Welcome to the Pacific Bulb Society Wiki; The phylogeny and evolution of the Pterygodium—Corycium complex (Coryciinae, Orchidaceae) H. Kurzweil, Plant Systematics and Evolution, Vol. 175, No. 3/4 (1991), pp. 161-223; Strong phylogenetic effects on floral scent variation of oil-secreting orchids in South Africa Kim E. Steiner, American Journal of Botany, Vol. 98, No. 10 (October 2011), pp. 1663-1679
Images:
Click on each image to see a larger version.
| Habitat/In situ | Habitat/In situ |
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| Photograph© Cameron McMaster. Image used with kind permission. |
Photograph© Cameron McMaster. Image used with kind permission. |
