ORCIIIDE.E. 155 



red, in shape (liHlc\ilt to iloscribo, as with most Bulbophylla, arched behind, bhmtlv 

 pointed forwards, and tksliy like a tongue. Coliunu surmounted by two awl-shaped 

 projections. 



On betel-nut trees, island of iladi'emacam, Mergui, forming small irregular 

 patches. Flowering in January. 



EncKANTHES, Bl. 



One species only known. In habit a Bidbophi/Uuin, differing, however, in 

 having a fringed membrane in the place of petals, and only two pollen-masses. For 

 further description see Otia Botannica, lleich. til. Fasc. I. p. 48, Xo. 25, Hamburgh, 

 1878, JE. Javanica. 



Dry3iod.4, Lindl. 



One species only known, T). pkta. A very curious little plant, figured and 

 described in Bot. Mag. tab. 5904, to which reference can be made. 



On trees. Dauna-tonng, about 4-5000 ft. Flowers in Xov., Dec. 



Dexdroeiuii, Sw. 



A very large genus, which, as at present constituted, includes plants of widely 

 different habit and general appearance Their point of agreement lies in their 

 flowers. Some (sub-genus Aporum) have flat stems with tleshy equitant leaves and 

 small and unattractive flowers. Some have pseudo-bulbs approximating them in 

 appearance to Bidhnphi/Ua, as D. amplum. Others have terete (or quill-.shaped) stems 

 and leaves. Others, again (and these are the true and typical Dendrobiu), have more 

 or less elongated cylindrical leafy psendo-hulbs or stems (as they may be fairly called 

 here), the leaves being generally bifarious (in two ranks) alternate and flat, i.e. in the 

 same plane. They differ, as in habit, so in size, some being less than an inch high, 

 others 5 or 6 feet long. The flowers are lateral, and either solitary, in fascicles, 

 or in racemes. The sepals and petals, in other words, all the segments of the flower 

 except the lip, are nearly uniform in shape and colouring,' the general difference 

 being that of the three outer segments or sepals the two lateral ones are somewhat 

 larger than the other and adhere commonly to the side of the column, which is 

 semiterete (or half-round) and is usually jirolonged into a sort of blunt spur. The 

 lip is always sessile, and articulated with the base of the column or adnate to it, 

 generally large, undivided or three-lobed. It is of the same thin texture generally 

 as the rest of the flower, whereas, in Bulhoplii/Uum the lip is thick and fleshy. 

 Pollen-masses 4, in pairs, side by side, nearly uniform and quite free, in a two-ceUed 

 anther. Species 70 or 80. 



Tliis genus includes a predominating proportion of the beaut}' of the Orchid 

 Tribe, at least of that part of it which is found in the Eastern Hemisi)liere. It 

 stretches from India through the Eastern Archipelago to N. Australia, and Burma 

 may fairly lay claim to be its Head-centre. Out of so much that is beautiful, it is 

 difficult to make a selection, which must necessarily be limited. 



D. CRrSIEXATrM. 



Pseudo-bulbs tufted, swollen at the base, and there deeply grooved and some- 

 times constricted at intervals; swollen portion, 3 or 4 inches long and varying in 

 diameter from A to li inch; suddenly tapering off into u very long slender stem, 

 1 foot or more, marked with tlie scars of the fallen leaves. Leaves fleshy, linear 

 oblong, often opi)osite on lateral ottslioots 2 or 3 inches by i an inch, blunt and 

 emarginatc. Flowers single or in pairs, in a raceme at the end of the long stem ; 

 large — 2 inches — pure white, with a yellow quadrate s])ot on the lip : sweet-scented. 



I select this species for special mention, not because of its beauty (though it is 

 pretty enough), but on account of a peculiarity which I have noticed in it, and thiidc 



' Tliis is the case with the tj-pic.il Benilrohia, hut in others, such as yiporum of Liudley, uow 

 included iu Dendioiium, the petals are very small aud uarrow. 



