AFRICAN

ORCHIDS

Jumellea teretifolia Schltr., Repert. Spec. Nov. Regni Veg. Beih. 33: 303 (1925).
Description:
Plants acaulis, leaves 12-20, cylindrical (10-20 cm x 2-3 mm in diameter), subulate-sub obtuse, rigid and with numerous sheaths. Inflorescence very thin, obviously longer than the leaves; peduncle thin, 6- 10 cm long, covered basally with 3 narrowly appressed sheaths, the upper of which is by far the longer (to 8mm.); bracts tubulous, shortly acuminate, 13-15 mm long; flower very large (flower 3-4cm long). Sepals 3.5 cm long, lanceolate-linear, very longly acuminate. Petals slightly shorter (3 cm), linear acuminate, slightly enlarged medially. Labellum narrow and sub unguiculate basally, rhomboid and aristate-acuminate apically (30 x 7 mm medially), provided basally with a short costule; spur usually 13cm long, filiform, parallel to the ovary, then arching-pendent. Column 4 mm long. Ovary pedicel very thin, 4.5-5 cm long
Habitat:
Jumellea teretifolia is indigenous to Madagascar, and grows epiphytically in woods on the western slopes of mountains at altitudes of 1,300 to 1,500 meters (4,200—4,900 feet). It has been collected near Manankazo, to the northeast of Ankazobe, and on Mt. Vohitrilongo in central Madagascar. In the region of Madagascar where it grows, there are distinct rainy and dry seasons. The species blooms between September and December in its native land.
Cultivation:
Intermediate conditions are recommended for this species. It may be potted (6-inch pot maximum) or placed on slabs (10 x30 cm, or 4 x12 inches). Average to below average light is suggested, although with its terete leaves the plant will tolerate fairly high levels. This species is quite slow-growing, but once established seems easy to maintain.
Notes:
This little species is another semi-"mini," although an old plant will eventually occupy a 6-inch pot. Total plant height is only 25 cm (10 inches), and a 10 x30 cm slab will hold an old plant "forever." Though typically jumellean, its flowers are quite different from those of many other angraecoids; they are small, and have a lacy, fragile appearance. For the collector who wants something different, Jumellea teretifolia is an apt candidate.
Distribution:
EC. Madagascar
References:
AOS Bulletin Vol 50 No 6 1981; Cultivated Angraecoid Orchids Of Madagascar Hillerman & Holst 1986; Flora of Madagascar Perrier 1981; Angraecoid Orchids Stewart, Hermans, Campbell 2006; Orchids of Madagascar Hermans 2007; Field Guide to the Orchids of Madagascar Cribb & Herman 2009 ; WCSP (2017). 'World Checklist of Selected Plant Families. 19.02-2017; http://apps.kew.org/wcsp/
Images:
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Jumellea teretifolia 01 Jumellea teretifolia 02 Jumellea teretifolia 03 Jumellea teretifolia 04
Photograph ©Gilles Grunenwald. Image used with kind permission. Photograph ©Gilles Grunenwald. Image used with kind permission. Photograph ©Gilles Grunenwald. Image used with kind permission. Photograph ©Gilles Grunenwald. Image used with kind permission.