Part Il. Suppl.] THE ORCHID STUD-BOOK. 305 
490. P. x Rachel (p. 198). 
C. x May Proctor, G.C, 1904, ii. 157; O.%. 1904, 271.—P. Smith. 
492a. P. x Rajah (callosum x triumphans).—Sander, 1906. 
C. x Rajah, G.C. 1906, i. 109; O.R. 1906, 85.—Sander. 
493. BP. x Rappartii (p. 198). 
C. x King Carlos, G.C. 1904, ii. 355.—Low. 
C. x Don Carlos, O.R. 1904, 367.—Low. 
The parentage of this hybrid requires confirmation. 
493a. P. x Readii (callosum x Matthewsii).— Fowler, 1907. 
C. x Readii, G.C. 1907, i. 30; O.R. 1907, 49.—Fowler. 
503a. P. x Rhesus (x Harrisianum x Winnianum?), O.R. 1906, 60.— 
Young, 1906. 
505a. P. x Riddifordii (x Atys? x calloso-barbatum), O.R. 1905, 119.— 
Clark, 1905. 
507a. P. x Robbinsii (x Calypso x Godseffianum ?), O.R. 1904, 120.— 
Vanner, 1904. 
509. P. x Robinianum (p. 200). 
C. xX Lowio-Parishii, G.C. 1904, i. 270; O.R. 1904, 140.—Drewett. 
509a. P. x Robsoni (exul x insigne).—-Sander, 1905, 
C. x Robsoni, G.C. 1905, i. 174; O.R. 1905, 119.—Bostock. 
C. Xx exquisitum, G.C. 1905, 1.15; O.R. 1905, 52 —Sander. 
The parentage of this hybrid requires confirmation. 
512. P. x Rolfei (p. 200). 
C. x Rolfei superbum, G. World, 1904, 1041, f. 
C. x Rolfeanum, ¥. S. H. F. 1904, 777.—Beranek. 
C. x Souv. de Diisseldorf, G.C. 1904, ii. 309; O.R. 1904, 331.—Beranek. 
513. P. x Romulus (p. 200). 
x Archimedes, G.C. 1904, i. 14; O.R. 1904, 21.—Warburton. 
x Amy Moore, G.C. 1905, i. 15 ; O.R. 1905, 51.—G. F. Moore. 
x The Czar, G.C. 1905, i. 31; O.R. 1905, 55.—Gratrix. 
<x Nogi, G. World, 1905, 29, 37, f.—Cypher. 
x Albertiano-nitens, G.C. 1905, i. 62.—Lambeat. 
Damyre, G.C. 1905, i. 62.—Janssens & Putzeys. 
C. x eboraicum, G.C. 1906, ii. 414; O.R. 1906, 19; ¥.H. 1906, ti. 589, 
f.—Craven. 
513a. P. x Rose (x Haywoodianum x Spicerianum ? ).—Rogerson, 1907. 
C. x Rose, O.R. 1907, 310.— Rogerson. 
515. P. x Rosita (p. 201). 
C. x Stanley Rogerson, G.C. 1904, ii. 323.; O.R. 1904, 364.—Sander. 
518. P. x Rossii (p. 202). 
C. x Baron Kuroki, G.C. 1904, i. 398, 410; O.R. 1904, 213, 215.—Low 
There appears to be some doubt about the parentage of this hybrid, 
524a. P. x Sally (barbatum x nitens), O.R. 1904, 102.—Appleton, 1904. 
525. P. x Salomone (p. 202). 
x 
