Macodes
Macodes petola
The genus Macodes from the orchid family consists of eleven species of herbaceous plants. They come from Southeast Asia, growing mostly terrestrial, sometimes epiphytic.
Description
The Macodes species have a creeping rhizome with a few internodes. The above-ground shoots are occupied with a few leaves. The leaf blade is skew- elliptical to rounded at the base, it narrows to a short petiole, which includes the shoot tubular. The leaves have light to dark green ground a high-contrast, reticulate venation, which is silvery colored until golden. The lower leaf surface is reddish in color.
The terminal inflorescence is unbranched inflorescence axis, bracts, ovary and the outer sides of the sepals are hairy. On Peduncle are some bracts; the bracts of the flowers are about as long as pedicel and ovary together. The flowers appear 'upside. The three outer petals ( sepals ) are all shaped the same, the lateral sepals cover the base of the lip. The lateral inner petals ( petals ) are narrower and adhere to the edge of the upper sepal. The lip is twisted asymmetrical at the base, it is adherent to the column. The lip is divided into three parts: the base ( Hypochil ) is hemispherical or bag- like shape, with two lateral, fleshy appendages on the inside. The middle part of the lip, the Mesochil can be very made short to long and is quite narrow. The front part of the lip is undivided and heart-shaped to oval shaped. The column is like the lip twisted asymmetric. The scar consists of a contiguous area, it forms two approximately square-shaped lateral wings. The stamen is in outline oval, it contains two oval to club-shaped pollinia, which are connected via a common pedicel with the small oval viscid disc ( Viscidium ). The separation between scar tissue and stamen ( rostellum ) is zweigezähnt deep.
Dissemination
Macodes is widespread in Southeast Asia from Vietnam on the southern Nansei Islands, the Philippines, Malaysia, Indonesia to Papua New Guinea, Solomon Islands and Vanuatu. The species grow in the shade of evergreen rain forests on rich soils at altitudes from 100 to 1500 meters.
Use
Especially in the 19th century Macodes was popular due to the contrast drawn leaves as an ornamental plant. Occasionally Macodes petola can be found in stores. In culture, the plants need a shady, humid location. The substrate must be transparent and evenly moist. In summer, the temperature should not fall below 24 ° C and above 28 ° C rise in winter, when the plants grow less, the temperatures between 15 and 24 ° C should move.
Botanical history and systematics
Macodes is classified within the tribe Cranichideae in the subtribe Goodyerinae. After Dressler can this be further subdivided into two groups; Macodes stands together with the majority of species which do not have two clearly separate stigmatic surfaces. Macodes described in 1825 by Carl Ludwig Blume as a section of the genus Neottia. John Lindley changed the rank in 1840 and described as a distinct genus Macodes. The name derives from the Greek word μακρός mak (r ) os for " large" and describes the large central portion of the lip in the type species, Macodes petola. Related to Macodes is the genus Dossinia.
The following species are counted to the genus Macodes:
- Macodes angustilabris J.J.Sm.
- Macodes celebica Rolfe
- Macodes cominsii ( Rolfe ) Rolfe
- Macodes cupida Ormerod
- Macodes dendrophila Schltr.
- Macodes limii J.J.Wood & A.L.Lamb
- Macodes megalantha Ormerod
- Macodes obscura Schltr.
- Macodes petola (Blume ) Lindl.
- Macodes pulcherrima Schltr.
- Macodes sanderiana ( Kraenzl. ) Rolfe