CXLVIII. ORCHIDE^}. (J. D. Hooker.) [Ol<-. 



dorsal sepal orbicular, lateral ovate, petals linear, lip with two basal 

 oblong cylindric obtuse ascending horns and a flat quadrate obtusely 

 2-fid midlobe. 



- PERAK ; at the Kinla Kiver, King's Collector. 



Stems 6-8 in., tufted, flexuous ; roots fibrous. Leaves 1 in., membranous when 

 dry. Spike 4-6 in., flowering to the base ; flowers reddish, -^ in. 



INDETERMINABLE SPECIES. 



O. GAEDNERIANA, Thwaites Enum. 296 (C.P. 593), closely allied to Wightiana, 

 but flowers pale red, petals oblong denticulate. Ceylon, Ambagamowa district, 

 Gardner. 



0. PLATYCAULON, TJiiuaites (C.P. 3913), in fruit only, is not Wight's plant of 

 that name. 



O. SPIRALIS, Griff. Notul. iii. 275, wants description and locality. 



2. BUCROSTYLIS, Nutt. 



Terrestrial or epiphytic, pseudobulbous or not. Leaves 1 or more, 

 continuous with their sheath. Flowers small, in terminal racemes, resu- 

 pinate. Sepals spreading or recurved. Petals as long, slender. Lip 

 adnate to the base of the column, usually flat, sides often produced upwards 

 beyond the column as broad or long auricles. Column very short, with 

 short spreading arms ; anther subterminal, pollinia 4. Species about 50, 

 temperate and tropical. 



* Sides of the lip produced upwards into large auricles. 



t Apex of the lip entire or notched (not serrate or pubescent). 



1. TfL. Wallichii, Lindl in Wall Cat. 1938; G-en. $ Sp. Orchid. 20; 

 leaves 2-4, bracts spreading shorter than the ovary, auricles of the lip acute 

 or obtuse, blade with a rounded notched or bifid tip. Ridley in Join-ti. 

 Linn. Soc. xxiv. 337. Malaxis acnminata, Don Prodr. 29 (note in Herb. 

 Wall). 



TEMPERATE and SUBTROPICAL HIMALAYA, alt. 4-7000 ft., from Simla to 

 Sikkiin. KHASIA MTS., alt. 5-6000 ft., J. D. H. $ T. T. ANDAMAN ISLANDS, 

 Kurz. TRAVANCORE ; on the Anamallay Hills, Eeddome (Ridley). DISTBIB. 

 Cambodia. 



Stem 2-3 in. Leaves 3-5 in., sessile or petioled, ovate-lanceolate, often dis- 

 coloured. Scape 3-8 in. Flowers about ^ in. long, greenish purplish or yellowish ; 

 sepals oblong, dorsal 1-3-nerved, lateral 3-5-nerved; petals 3-uerved ; auricles of 

 lip very variable. The Andaman specimen has an acute lip. A vry variable plant, 

 if, as I think, the following are varieties. 



VAR. omphaloides, Parish ; leaves more unequal at the base, auricles of lip 

 rounded and overlapping, Ridley I. c. 338. Moulmein, Parish. 



VAR. liloba-, bracts usually longer, pedicels shorter, blade of lip contracted below 

 the level of the column, tip bind, arms of column larger. M. biloba, Lindl. in Wall. 

 Cat. 1940; Gen. Sf Sp. Orchid. 20 ; Ridley I. c. 337. Nepal, &c. Walhch's ID 10 

 is a mixture of specimens from Kuinaon, ISepal and Burma. 



VAK. brachycheila ; leaves lanceolate, auricles acute, blade very short with a 

 forcipate tip. Moulmeiu, Pariah. 



2. UK. khasiana, JEuok. f. ; leaves 3-4 petioled ovate or lanceolate, 

 bracts spreading equalling the ovary, sepals broad hooded, auricles of 



