5° 
Orchidées, to change the epoch of this diminution of activity, and to make the 
Odontoglossums rest in the middle of summer. The plants indeed accommodate 
themselves better to the cold of winter, during which it is scarcely necessary 
to warm their houses to keep the frost out, than to the excessive heat of July 
and August, against which it is difficult to protect them. 
(Continued from page 48 J 
VAR. SCHRQEDERI Rchb. f. in Gard. Chron., 1885, pt. I, p. 786. Laelia 
Schroederi T. Moore in Williams Orchid Album., I, t. 2. — Flowers wholly 
white, except the yellow dise, and some rose-purple lines in front, which do 
not extend to the margin. 
VAR. WHITEANA Rchb. f. in Gard. Chron., 1888, pt. I, p. 681. — 
A very dark variety much like Lowiana, the lip without any yellow in the throat, 
but replaced by an undecided light purple with darker veins, and the apex 
white as in praetexta. 
VAR. WILLIAMSII Hort., Williams Orch. Gr. Man., ed. 4, p. 196; 
Orchid Album, I, tt. 9, 10. — A very large form, sepals and petals délicate 
pale rose with darker veins, lip with a pale yellow dise, and a white area veined 
with purple at the apex. 
Two or three other varieties hâve received distinctive names, but as their 
distinctive characters are not recorded, I hâve omitted them here, besides which 
there may be some which I hâve overlooked. The foregoing, however, comprise 
a sériés from the lightest to the darkest forms, together with numerous inter- 
mediate ones. 
The variety Brysiana (described in Williams Orch. Gr. Man., ed. 6, p. 366), 
is a form of L. elegans, being based upon Laelia Brysiana of Lemaire, though 
the figure of the very different Cattleya Brysiana of Lemaire is also cited. 
Laelia purpurata has participated in the parentage of several very beautiful 
hybrids, both in a wild state and under the care of the hybridists. In its native 
home it grows associated with Cattleya guttata var. Leopoldii and C. intermedia , 
with both of which it has been crossed. With the former it has yielded Laelio- 
Cattleya elegans and its numerous varieties, and with the latter L.-C. Schilleriana 
and its varieties. Crossed with different varieties of Cattleya labiata it has yielded 
the three beautiful Laelio-Cattleyas known as bella, callistoglossa, and Canhamiana, 
while with L.-C. elegans it has yielded L.-C. Horniana, a secondary hybrid, 
which has therefore three-fourths blood of Laelia purpurata in its parentage. 
R. A. Rolfe. 
