128 THE ORCHID STUD-BOOK. [Part II, 
Not to be confounded with O. x spectabile, L. Lind. (Lind. xi. t. 523), 
which is believed to be a form of O. x excellens. 
* 419. O. x Vuylstekei (x Denisonze x triumphans), O.R. 1902, 99, 170; 
1903, 183; 1904, 54.—Vuylsteke, 1902. 
First recorded as a doubtful hybrid between O. triumphans and O. tripudians, 
but afterwards O.  Denisonz was suggested as the second parent, though the 
matter requires confirmation. 
20. O. x waltonense (crispum ? x Kegeljani), G.C. 1903, i. 46, 51, f. 25; 
F.H. 1903, i. 71, f.; G.dZ. 1903, 73, f.; Gard. 1903, i. 78, f.; O.R. 1903, 49, f. 14; 
1904, 15, f. 7; 1905, 168, f. 27 (v rosefieldiense).—Thompson, 1902. 
[See Fig. 44. 
Fig. 43. ODONTOGLOSSUM & ROLFES. 
21. O. « Wattianum (Harryanum x Lindleyanum), O.R. 1900, 299, 314, 
323; 1904, 235 ; G.C. 1900, ii. 214, 286, f. 83 (v. Craw 
1900. 
Originally described in 1890 as possibly a natural hybrid between 
O. Lindleyanum and O. luteo-purpureum (Rolfe in G.C, 1890, i. 354), and after- 
wards, in deference to the opinion of the collector, as possibly a distinct species 
(Reichenb. ser. 2, i. 19, t. 9), though intermediate in habit between O. Lindley- 
anum and Harryanum. Its real origin, then suspected, has since been proved 
by Mr. Crawshay. 
shayanum).—Crawshay, 
