354 THE ORCHID REVIEW. (DECEMBER, IQII. 
Apart from nomenclature, the fourth plant mentioned above is exception- 
ally interesting. The flower is said to be pale yellow, with the green lines 
of C. Lawrenceanum Hyeanum, but rather lighter in colour. Thus the 
albinism of both parents is present, though the earlier hybrid between the 
same two albino varieties reverted almost to an ordinary coloured form of 
C.—or Paphiopedilum—Eucharis (O.R., xvi. p. 128). If this new record is 
correct it removes from P. insigne Sanderz the reproach of always yielding 
coloured hybrids when fertilised with an albino form of another species. It 
also throws further light on the theory of ee colour factors, 
which has previously been discussed (O.R., xvi. pp. 102, 142, 228). and 
again shows that the mysterious factors ‘“ C 1 ca ‘© P,” which have been 
invoked to account for the phenomena or reversion, are S pately hypothetical. 
We should like to know the history of this particular cross; whether 
there were other seedlings, and if so whether they were albinos, or if any of 
them reverted to coloured forms. The case at present seems anomalous, 
as did Mr. Cookson’s Cypripedium Lawrenceanum Hyeanum, which ‘ when 
selfed gave 14 albinos, but in addition one coloured plant.” This has been 
held as “unaccountable” from the Mendelian standpoint (see O.R. 
xvii. p. 261), but it is not by any means unique, and all the albinos of 
coloured species must at some time have originated in the same way. 
CALANTHES NOT FLOWERING. 
AN esteemed correspondent is troubled with the deciduous Calanthes failing 
to flower, and a fine bulb has been sent to see if we cansuggest a cause. The 
plants are said to form magnificent bulbs and fine growth, and do well until 
nearing the blooming period. when they suddenly begin to go black and 
most of the spikes fail to develop. The house is span-roofed, and the 
situation much exposed, with prevalent high winds, which keeps the 
temperature low. The latter is given as 65° max., 55° min., and water has 
been given weekly for the last month. On splitting the bulb sent it appears 
to be sound except just at the apex, where there is a little black discolor- 
ation, but it seems rather overcharged with water. A spike was pushing 
at the base about an inch long, and on splitting this down we found that 
the growing point and base of the covering sheaths were black. Wesuggest 
too much water and probably too low a temperature during the resting 
stage as the probable cause of failure, but shall be glad to have the opinion 
of our readers. 
** MENDELIAN METHODs, by which is meant the analytical observation 
of specific characters in the individuals and their occurence in the im- 
mediate offspring.’”—-Salamann in Journal of Genetics, i. p. 273. 
