1 70 RODRIGtJEZlA. 



sepals and petals similar and sub-equal, spathulate, obtuse, white with a 



large brown blotch near the base ; lip broadly clawed, the claw auriculate 



and with two short keels; the blade fan-shaped, two-lobed, dentate, white 



with a large red spot at the base ; spur conic, very short. Column 



wings roundish oblong, spotted with brown at the margin. 



Trichocentrum Pfavii, Rchb. in Gard. Chron. XVI. (1881), p. 70. Id, XVII. (1882), 

 p. 117, icon. xyl. 



One of the discoveries^ in Central America^ of the Swiss orchid 



collector Richard Pfau, who has communicated to the horticultural 



press some useful notes on the climate of that region and the 



conditions under which orchids grow there. Tricliocentrum Pfavii 



was introduced in 1881 by Messrs. Sander and Co. 



R. triquetrum.* 



" Leaves vertical, equitant, 6 inches long, ^ inch wide at the base, 

 gradually tapering to an acute apex. Peduncles axillary, about an inch 

 long, with several conduplicate lanceolate-linear acute bracts, about | inch 

 long. Pedicel and ovary 1^ inch long, triquetrous. Sepals ovate- 

 lanceolate, acute, pale straw-yeUow, the lateral two prolonged behind 

 and adnate to the spur of the lip ; petals sub-orbicular, pale straw- 

 yellow; lip reniformly orbicular, straw-yellow irregularly variegated and 

 almost suffused on the disk with orange ; base with two converging 

 keels; spur slender, \\ inch long, tapering to the acute apex. Column 

 stout, wings small and rounded." — R. A. Rolfe in Gard. Chron. IX. s. 3 

 (1891), p. 701. 



Trichocentrum triquetrum, RoLfe in Gard. Chron. loc. cit. Lindenia, VII. t. 311, 

 A very distinct species and an interesting addition to the genus 



recently introduced from Peru by Messrs. Charles worthy Shuttle worth 



and Co., of Heaton, Bradford. 



RODRIGUEZIA. 



Ruiz et Pav. Prod. Fl. Peruv. et Chili, p. 115, t. 25 (1794). Rchb. in Walp. Ann. VI. 

 p. 690 (1863). Benth. et Hook. Gen. Plant. III. p. 559 (1883). 



A well-established genus including about twenty species that are 

 dispersed over tropical America from southern Brazil to Mexico and 

 also the West India Islands. The essential characters of Rodriguezia 

 are seen in the lateral sepals^ labellum and column ; the lateral 

 sepals are connate^ and in those species formerly included in 

 Lindley's Burlingtonia they are joined in a very curious way^ some- 

 times forming a boat-shaped body of singular appearance that is 



* Not seen by us. 



