66 ONCIDIUM. 



Botanic Garden, Glasnevin. The speciBc name, literally '^refined 

 gold" — 6 flf)vL.ov y^pvaiov — refers to the colour of the flowers. 



On. ornithorhynchum. 



PseiKlo-l)uIl)s oval - oblong, compressed, 1 — 2 inches long, diphyllous. 



Leaves linear-lanceolate, 7 — 10 inches long. Scapes pendulous or arching, 



longer than the leaves, panicled, many flowered. Flowers about | inch 



across vertically, rose-lilac ; sepals and petals oblong, the lateral sepals 



free and divaricate, the petals broader and undulated ; lip sub-panduri- 



form, the lateral lobes Avith reflexed margins and sometimes of a 



darker colour than the rest of the flower, the anterior lobe emarginate ; 



crest consisting of five yellow, toothed lamella?, in front of which are 



two horn-like teeth. Column wings triangular toothletted ; anther 



beaked. 



Oncidium ornithorhynchum, Hbdt. et Kunth, Nov. Clen. Plant. T. p. 345, t. 80 

 (1815). Lind). Gen. et Sp. Orch. p. 204 (1832). Id. in Bot. Reg. 1840, t. 10. Id. 

 Fol. Orch. Oncid. No. 189. Batera. Orch. Mcx. et Guat. t. 4. Bot. Mag. t. 3912. 

 Knovvles and Westc. tl. Cab. III. t. 136. 



SUh-Ya.r.—albifforu)ii (Gard. Chron. 1873, p. 503. FL Mcuj. n.s. t. 398), 

 flowers dull white, the crest of the lip yellow as in the type. 



Oncidium ornithorhynchum is a native of southern Mexico and 

 Guatemala, occurring in several localities but always at a considerable 

 elevation. It was originally discovered by Humboldt in the beginning 

 of the present century on the mountains near Valladolid, in the 

 Mexican province of Michoacan. It was not introduced into British 

 gardens till 1836, when it was received simultaneously by Mr. Bateman 

 from Guatemala through Mr. G. Ure Skinner, and by Messrs. Loddiges 

 from Oaxaca probably through Karwinsky. The white-flowered form 

 first appeared in the collection of the late Mr. John Day, at Tottenham, 

 in 1873 



The specific name, from fnivy^og, "a beak," and opviOog, ''of a bird," 

 refers to the beaked anther, whence this Oncid is sometimes popularly 

 known as the Bird^s Bill Oncidium, but this character is common to 

 all the species included in Lindley's sub-section Bostrata as well as to 

 many others. 



On. panchrysum. 



Pseudo-bulbs broadly ovate, much compressed, 2^ inches long, mono- 

 phyllous. Leaves ligulate, sub-acute, 9 — 12 inches long. Scapes stoutish, 

 erect, as long again as the leaves, panicled and many flowered. Flowers 

 of a uniform bright canary-yellow, \\ inches across vertically ; sepals 

 ovate-oblong, acute, the lateral two free and divergent ; petals similar 

 but broader and obtuse at the apex ; lip sub-panduriform, the basal 



