THE ORCHID REVIEW. 277 
Brassia among forms of O. x_ glorioso-crispum, and another, which 
apparently belongs here, has numerous small spots on a cream-yellow 
- ground. In most forms an unmistakable combination of characters of the 
two parent species may be traced, though in different individuals a consider- 
able range of variation, both in form and colour, may be observed. 
The following is a list of the forms of this hybrid (one however being 
doubtful), with references to descriptions and figures :— 
Odontoglossum X Coradinei, Kchb. f. in Gard. Chron., 1872, p. 1068, fig. 251 ; /d., 1885, 
ii, p. 200, fig. 40 ; Zd., 1886, i. pp. 268, 269, fig. 51; Rchd. f. Xen. Orch., ii. p. 208, t. 192, fig, 
1; Orchid Album, ii. t. 90; Orchidophile, 1885, p. 132, fig. 5; Reichenbachia, ser. 2, i. p. 45, 
t.21. O. Lindleyanum var. Coradinei, Veitch Man. Orch., i. p. 43+ 
Var. grandiflorum, Rchb. f. ex Lindenia, ii. p. 93, t. 93 (there seems a slight doubt as to 
whether this really belongs here). 
Var. hemileucum, Rchb. f. in Gard. Chroz., 1883, i. p. 688. 
O. X ligulare, Rchb. f. in Gard. Chron., 1882, i. p. 558. O. Lindleyanum var. ligulare 
Veitch Man. Orch., i. p. 43- 
This completes the list of combinations with Odontoglossum crispum, 
but among the four species which grow together in the Bogota district three 
other combinations are possible, as may be seen at a glance in the following 
diagram :— 
O. crispum 
x1 
O. gloriosum ‘ ; ‘ ; x2 
a KS 
O. luteopurpureum . . ‘ o 6 
x5 
O. Lindleyanum 
KEY TO D1AGRAM.—Diagonal lines are supposed to extend from each species until they 
intersect, and each intersecting point represents a possible combination or hybrid. A cross 
at this point indicates our knowledge of the existence of the hybrid; a circle, that it is 
not known. The numbers explain themselves. 
It is interesting to note that five out of the six possible combinations 
here indicated are already known. No. 1 represents O. X glorioso-crispum, 
2,0. x luteopurpureo-crispum, and 3, O. x Lindleyano-crispum. These 
we have already considered. No. 4 represents the hybrid between O. glorio- 
sum and 0. luteopurpureum, and 5, between O. luteopurpureum and O. 
Lindleyanum. The remaining one, No. 6, between O. gloriosum and O. 
Lindleyanum I have hitherto failed to detect, though its appearance may be 
anticipated. One consideration, however, 1s worthy of mention in this con- 
nection. Neither of these species are sought after for horticultural acd ac 
in the same way as is the beautiful Odontoglossum crispum,and, as so many O 
the hybrids now in gardens have appeared among importations of the latter, 
the fact is a suggestive one. If there is a locality in which these two species 
