ODONTOGLOSSUM. 569 



around the sepals and petals. The disk of the sepals shows a few larger, 

 partly-lobed, sepia-oinnamon spots; the disk of the petals is adorned with a 

 greater number of smaller ones. The lip is rhomboid, very broad, acuminate, 

 toothletted, angulate, broken on the superior half so as to appear caudate, 

 yellow, with some sepia-cinnamon blotches and marks. Column angulate, with 

 very small dolabriform wings, light ochrc-yellow, with brown marks."— JVetu 

 Grenada. 



O. HOOKERIANUM.— See 0. comatum. 



O. HORSMANNI, Rchh.f.—A very beautiful and distinct plant, supposed to 

 bo a natural hybrid between 0. Pescatorei and 0. luteo-pur^itreum. The pseudo- 

 bulbs are pear-shaped, compressed ; the flowers are of good form, well filled up, 

 and very ornamental ; the sepals and petals yellowish- white blotched with cinna- 

 mon ; the lip broad, yellowish-white, with a large yellow disk blotched with cinna- 

 mon. It was discovered by Mr. Frederick Horsman. When the many-flowered 

 racemes of this Udontoglot are well developed, as we have frequently seen them, 

 the effect they produce is highly pleasing. The plant blooms during the winter 

 months. — Xciu Grenada: Ocana. 



Fig. — Gardftiing World, vi. p. 573. 



O. HRUBYANUM.-See O. cikrhosum HauBY.iNUM. 



O. HUMEANUM, Rclib. f. — A very pretty Orchid, supposed to be a wild cross 

 between 0. cordaium and 0. Rossii. It is named in honour of the late 

 W. B. Hume, Esq., in whose collection it flowered for the first time. The 

 inflorescence is two-flowered ; the flowers have the sepals triangular acuminate, 

 keeled behind, yellow striped with bars of cinnamon-brown, the oblong 

 acuminate crispulate petals white, with three sepia-brown blotches at their base, 

 and the cordate-ovate acute crenulate lip white, with a two-lobed yellow callus 

 striped with red on its disk. — J/e.t I'co. 



Fig. — lielcluinhaehia. ii. t. 82. 



O. HUNNEWELLIANUM, Rolfe. — A small-growing species, discovered by 

 Mr. Oscar Bobisch. near Bogota ; it somewhat resembles 0. Schillerianum. 

 Flowers about 2 inches in diameter ; sepals broadly lanceolate acute, light yellow 

 spotted with brown ; petals paler, but similarly marked ; lip obovate-elliptical, 

 white spotted with brown. — Xew Grenada. 



O. HYSTRIX.— See 0. LUTEO-PURruiiEUM. 



O. IMSCHOOTIANUM, Rolfe.—This interesting plant was first flowered by 

 M. A. van Imschoot, of Ghent, in May, 1889, and is probably a natural hybrid 

 between 0. Lindleijanum and 0. tripudlaiis. The sepals and petals are like those 

 of the former, but the markings are more purple in colour, as is also the lip, 

 which is, however, broader than in that species, the crest and markings being 

 nearer to those of 0. iripudiaas. — Xatire country not stated. 



O. INSLE AYI, Zindl.— This noble plant has very much the aspect of 0. grande. 

 It has ovate compressed pseudobulbs, from which grow a pair of broad oblong- 



