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ODONTOGLOSSUM x EXCELLENS xcus. ¥. var. DELLENSE ROLFE. 
THE EXCELLENT ODONTOGLOSSUM, “ THE DELL” VARIETY. 
ODONTOGLOSSUM, Vide Lindenia, Engl. ed., vol. Tip alOs 
Odontoglossum < excellens. Pseudobulbi subcompressi, ovoideo-oblongi. Folia lanceolato-linearia, Scapi sub- 
erecti, arcuati, multiflori. Sepala lanceolata acuminata. Petala sepalis similia v. paullo latiora. Labellum unguicula- 
tum, obovato-oblongum, obtusum, crispo-undulatum, basi subcordatum, cristae lamellis lateralibus cartilagineis denti- 
culatis lineis duabus elevatis divergentibus interjectis. 
Odontoglossum X< excellens RCHB. F. in Gard. Chron., 1881, pt. II, Pp. 426. — Id. 1885, pt. II, PP. 239, 
241, fig. 51. — The Garden, XXI, Pp. 216, t. 330. — Reichenbachia, ser. 2, vol. I, p. 41, t. 69. — RoLFE in 
Gard. Chron., 1889, pt. I, P31 6507— "Ips, 1801, pte, P- 754. 
Var, eugenes Rcwup. F. in Gard. Chron., 1888, pt. I, Pp- 522 (in nota). — O, eugenes VEITCH Man. Orch., 
pt. I, p. 73. — Warn. & WILL. Orchid Album, VIII, t. 355. 
Var. chrysomelanum Rous. ¥. in Gard. Chron., 1888, pt. I, p. 522. 
Var. maculatum Rcup. ¥. in Gard. Chron., 1888, pt. I, p. 522 (in nota). — O. Vuylstekeanum var. macus 
latum Reus. ¥. in Gard. Chron., 1884, pt. 2, p. 584. 
Var. dellense. Sepala et petala valde maculata. 
Var. dellense ROLFE supra. 
Odontoglossum > dellense O'BRIEN in Gard. Chron., 1891, pt. I, p. 521. — Roure in LinpD. Journ. d. Orch., 
II, p.. 70. 
dontoglossum > excellens originally appeared in the collection of Sir 
Trevor Lawrence, Bart., M. P., at Burford Lodge, Dorking, in 1881, 
! ¥ from an importation made by Messrs Hucu Low & C*, of Clapton. 
At first it was thought to be a yellow variety of O. Pescatorei, but REIcHENBACH 
thought it might be a natural hybrid between this species and O. tripudians, while 
others soon afterwards suggested O. triumphans as the second parent. Its hybrid 
origin and parentage, however, are no longer matter for speculation, as the 
plant has been artificially produced in the establishment of Messrs James Verrcu 
& Sons, of Chelsea, by crossing O. Pescatorei with the pollen of O. triumphans. 
This is the second Odontoglossum whose origin has been proved by direct 
experiment, as a form of O. x Wilckeanum was previously raised by M. Leroy, 
in the collection of Baron Epmonp pr Rotuscui.p, of Armainvilliers, near Paris. 
In this case O. crispbum and O. luteopurpureum are the parents, as had long been 
supposed. O. X excellens, like most other hybrids, is extremely variable, both in 
shape and colour, sometimes the characters of one parent preponderating, some- 
times those of the other, and several varieties have received distinctive names. 
The one now figured was described by MJ. O’Brten, as x O. dellense, under 
the belief that it was a natural hybrid between O. Pescatorei and O. praenitens 
(Bot. Mag., t. 6229). The latter species, however, is totally different in the 
Mo. Bot. Garden, 
1895, 
