Archive image from page 483 of A dictionary of the flowering. A dictionary of the flowering plants and ferns . dictionaryofflow00will Year: 1919 468 OR CHI DA CEAE the O. drop their 1. (though they may flower), and ' hibernate' in the condition of fleshy psendobulbs. One pseudobulb, which is a thickened stem-internode, is usu. formed each year. In this, water and other reserves are stored. Those epiphytes which do not form these tubers have fleshy 1. which serve the same end; the fleshy leaved orchids, Vanilla, have usu. a very feebly developed velamen. Some mono- podial forms have no gr
Archive image from page 483 of A dictionary of the flowering. A dictionary of the flowering plants and ferns . dictionaryofflow00will Year: 1919 468 OR CHI DA CEAE the O. drop their 1. (though they may flower), and ' hibernate' in the condition of fleshy psendobulbs. One pseudobulb, which is a thickened stem-internode, is usu. formed each year. In this, water and other reserves are stored. Those epiphytes which do not form these tubers have fleshy 1. which serve the same end; the fleshy leaved orchids, Vanilla, have usu. a very feebly developed velamen. Some mono- podial forms have no green 1. at all, assimilating either by the surface of the stem, or by the long dangling aerial roots (Polyrrhiza, &c.). The infls. are racemose, very often spikes, which look like racemes, the long inf. ovary resembling a stalk. The fl. is -|- and departs from -the ordinary Monocot. type. There are two chief divisions of O., with different fls., the Monatidrae and Pleonaijdrae, with i and 2 sta. respectively ; the great majority are monandrous. P in 2 whorls, epig., petaloid. The post, petal is usu. larger than the rest, and is termed the labellum; by the twisting (resitpinatioti) of the ovary through 180° it comes round to the ant. side of the fl. and forms a landing place for insects. In many O. its structure is exceedingly complex. The essential organs of the fl. are all comprised in a central structure by. which the O. can be recognised at a glance, viz. the column, which consists in the simpler cases of the combined style and sta. (to use the old-fashioned expres- sion ; in reality it is very probably an outgrowth F,ora, diagram of Or. of the axis, bearing the anthers and stigmas at chis,beforeresupination the top). In the monandrous forms the column (after Eichler, modi- exhibits one anther and two fertile stigmas (often M£ ™ = 'fellum- .- . i i oliJ — alcltlillltJUCt ± confluent), together with a special organ, the rostellum, which repres. the third stigma. The sin
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