CXLVIII. ORCHIDEJB. (J. D. Hooker.) 169 



pollinia ; anther oblong, obtuse, completely 2-celled ; grains of pollinia 3-4- 

 seriate, secund on the rachis, cuneiform, caudicles rather long, twisted, 

 glands large naked. Capsule fusiform. Species 20, Africa and the 

 following. 



The above description applies to the two Indian species of this highly interesting 

 genus, the fertilization of which deserves a careful study. The analysis of dried 

 specimens is so difficult that I advance the description of the membrane of the 

 column and its appendages (which differs from that of others) with hesitation. 



1. D. zeylanica, Trimen Cat. PI Ceyl. 91; lateral sepals concave 

 not waved, petals semilunate obtuse. D. tripetaloides, Lindl. Gen. & Sp. 

 Orchid. 371 (in part) ; Thwaites Enum. 311 ; Wight Ic. t. 930 $ v. 15. 



CEYLON ; in the Central Provinces alt. 3-5000 ft., Walker, &c, The MALABAR 

 & CANARA Ghats, &c., Wight, &c. 



Stem 6-10 in. erect from the subglobose tubers, 1-3-leaved. Leaves $-1 in., dis- 

 tant, amplexicaul, acute. Flowers -\ in.diam., subcorymbosely, spicate ; bracts leafy; 

 ovary | in., straight ; lip included under the hood, erect from the top of the column, 

 2-partite from a narrow cuneate baso, arms falcately recurved, papillose ; a pendu- 

 lous linear appendage, with a rounded dilated papillose apex bearing a central cone, 

 is inserted on the cuneate base of the lip. Capsule % in. 



2. D. neilgrherrensis, Wight Ic. t. 1719; lateral sepals strongly 

 waved, petals lunate cuspidately acuminate. 



NILGHIEI HILLS, Wight. 



Larger and stouter than D. zeylanica, with larger reddish white flowers spotted 

 with crimson ; the lateral sepals are free or connate, and pubescent at the base. 

 Perhaps a form of D. zeylanica. 



Tribe V. CYPRIPEDIE^E. (See vol. v. p. 668.) 



111. CYPRZPEDXUTC, Linn. 



Terrestrial herbs, with a leafy stem, plaited leaves, and terminal flowers, 

 or stemless with distichous radical coriaceous often tessellately coloured 

 leaves and 1- co-fld. scapes. Flowers large, solitary or few. Sepals spread- 

 ing, free on the lateral connate and placed under the lip. Petals free, very 

 various. Lip sessile, side lobes small, spreading or inflexed, midlobe very 

 large saccate, inflated oblong or helmet-shaped. Column short, terete; 

 anthers 2, globose, together with the disciform deflexed stigma. hidden under 

 a large disciform staminode ; ovary 1 celled. Species about 40, Europe, 

 temp, and trop. Asia and America. 



In describing the Scapigerous species I have largely availed myself of published 

 plates and the description in Veitch's excellent Manual, made from living plants. I 

 have made no attempt to enumerate even the multitude of named hybrid forms that 

 have been produced by crossing the Indian species with one another. They are well 

 systematized in Veitch's Manual, where nearly 50 nre assigned to their parents. C. 

 barbatum alone has been crossed with upwards of 15 other species. 



* Leaves 2, opposite on the stem, plicate. 



1. C. elegrans, Reichb. f. in Flora, 1886,560; villous with cellular 

 hairs, leaves orbicular-ovate or oblong, flowers solitary. 



SIKKIM HIMALAYA, alt. 1000 ft., Pantling. EASTEEN TIBET ; North of Phari, 

 King's Collector, 



Stem 1-2 ft. high below the leaves. Leaves 1-2 in. broad. Scape shorter than the 

 leaves ; bract elliptic; flower about 1 in. diam. A very interesting plant, the nearest 

 ally of which is C.japonicum. I have seen only a single small specimen. 



