Geodorum.] oxlviii. OBCHiDBiB. .(J. D. Hooker.) 17 



of the axis of the scape after flowering, and 'that the appearance of an acute lip is 

 due to the infolding of its margins towards the apex, then the G. purptireum is the 

 commonest and widest-distrihuted Indian species. Dalzell and Gribson alone identify 

 a plant with G. purpureum, Br., and I have examined authentic specimens of 

 it, which they did not, for they give Brown's characters for the species, whilst 

 those of their specimens are what I have given above. (?. purpureum is the 

 tallest and largest-leaved Indian species ; its flowers vary from white veined with 

 red-purple to pale purple with stronger veins. 



2. Gt. dilatatum, Br. in Sort. Kew, Ed. 2, v. 207 ; leaves nsuallj 

 sessile, sepals linear-oblong subacute 3-5-nerved, petals obovate-oblong 

 5-7-nerved, lip broadly oymbiform, tip dilated recurved crenulate or un- 

 dulate, disk smooth or with granulate nerves ending in irregular small tu- 

 bercles. Lindl. Gen. S( Sp. Orchid. 175; Lodd. Bot. Oa6.t.l797; ? Wight 

 If. t. 912. Limodorum recurvnm, Roxb. Cor. PI. i., 33 t. 39 ; Fl. Ind. iii. 

 469. Malaxis oernua, Willd. Sp. PI. iv. 93. Otandra cernua, Sali^b. in 

 Trans. Sort. Soc. i. 261. 



Assam, Silhet, Buema, the Deooan PeninsttIiA and Cetlon {all more or less 

 doubtful). 



If I am right in respect of this species, it differs from purpureum in its lower 

 stature, broader petals and lip, the disk of which is smooth, granulate or suhcarancled. 

 Wight's figure is probably an exaggeration of the flowers. Dalzell and Gibson 

 describe it as a Concan plant, but I have seen no specimens so named by them. 



3. G> candidum, Wall. Cat. 7374 ; flowers ascending or erect, sepals 

 linear-oblong, petals almost orbicular 7-9-nerved, lip very broad narrowed 

 upwards from the 2-orested dilated base, disk nearly naked, tip crenulate. 

 Lindl. Fol. Orchid, {in part). G. attenuatum, G^ff. in Vale. Journ. Nat. 

 Sist. V. 358, t. 24. 



Bubka, Qriffith ; Tenasserim, at Moulmein, Wallich. 



Griffith further describes his Q. attenuatum (which is certainly the same as 

 Wallich's candidum) as having a truncate spike, subequal sepals and petals (which 

 they are not in his drawing in Herb. Calcutt. ), inodorous white wide flowers, less 

 spreading than visual, tip of lip concave, almost conduplicate, emarginate, crenate, 

 disk with a callus, column sprinkled with cellular pubescence below the stigma and 

 along the broad nerves of the lip, and a very short column with a bidentate tooth on 

 each side of the apex. — It is a very distinct species. A single specimen of (?. citrinum 

 is on the sheet with "Wallich's specimens of this. 



4. Ct. citrinum, Jachson in Andrews' Bot. Bep. t. 626 ; flowers 1| in. 

 diam. yellow, sepals and petals very broad acute, lip large oblong deeply 

 saccate with an obtuse gibbosity or spur, more or less streaked with red or 

 purple, disk nearly smooth yellow, tip rounded or emarginate. Lindl. 

 Gen. Sf Sp. Orchid. 176 ; Fol. Orchid. 3 ; Bot. Mag. t. 2195 ; Wall. Cat. 

 7375 ; Walp. Ann. vi. 633. 



CHiTTAO0if&, Wallich. MouLMBiN, Woilich, Parish. PsNAira {Ic. in Herb. 



Kew). 



The figure in the Bot. Eepository represents a plant with bracts hardly exceeding 

 the ovarv, 4-5 pale yellow flowers IJ in. in diameter, a large saccate subcalcarate 

 lip broadly oblong with recurved margins, emarginate tip, and yellow and faint purple 

 markings on each side of the smooth disk. The Bot. Mag. plant has flowers as large, 

 but pale green, the lip is similar but not emarginate, and is streaked with red nerves ; 

 the pedicels are much longer with the ovary IJ in. long, and there are many long 

 bracts below, but not on, the raceme, where they are small. The G. citrinum, Jacks. ? 

 of Wall. Cat. 7375 has the long bracts below the inflorescence of the Bot. Mag. plant, 

 but very short pedicels and a smooth lip with incurved and then reflected margins.-— 

 The Penang drawing shows short pedicels, pale greenish white flowers, a saccate lip 

 with recurved margins and red nerves j there are only one or two bracts below the 

 Vot, VI, C 



