82 THE ORCHID REVIEW. (MarcH, 1913- 
and on May 6th the flowers were expanded and the photograph was taken. 
Mr. Wilson remarks that although the roots were a full six months from 
the time of collecting to that of planting they came through in good shape, | 
and hundreds are growing. freely in the Abcretum nurseries. Their 
hardiness, as judged from the altitude at which they occur in a native state, 
and from plants growing in association with them, is assured. It grows 
from mine to eighteen inches high, and has solitary clear yellow flowers 
with usually a few spots or blotches of orange brown on the face of the lip. 
C. luteum was originally discovered by Pere David, at Moupine, E. 
Tibet, in June, 1869, and was described by Franchet in 1888 (PI. David., 
ii. p. 126). Afterwards it was collected by Delavay around Tali, in the 
province of Yunnan, where it was said to be common at about 10,000 feet 
elevation. Since then it has been met with by various collectors in Western 
China at altitudes varying from 8000 to 11,000 feet. Mr. Wilson remarks 
that its habitat is the margins of woods and thickets, and is also found on 
scrub-clad boulders stranded in bogs. Around Sungpan, in the extreme 
north-west corner of Szechuen, it is abundant in thin woods of spruce and 
silver fir, growing near the margin of certain glacial torrents which are 
_surcharged with. petrifying -limestone. Nevertheless, having . seen it 
growing in a variety of soils, he hesitates to say that a calcareous soil is 
necessary. A cool moist situation and plenty of leaf soil would seem the 
essentials. 
In habit, vigour, and general appearance the species closely resembles 
the North American C. Regine, and indeed has been confused with it, for 
the remark that the latter had “recently been discovered in Western China, 
on the borders of Tibet, together with the remarkable little C. arietinum, 
also a native of Canada and Eastern North America” (O.R., i. p. 269), was 
based on a dried specimen of C. luteum. At that time no specimen 0 
C. luteum was available for comparison, and the two are much alike except 
in colour, which cannot be made out from dried specimens. We may now 
hope to see the species alive, as living plants might now reach this country 
at any time. , 
C. TIBETICUM, as found in its native home in the month of June, is 
shown in fig. 21, from a photograph taken by Mr. Wilson. He remarks 
that it is widely spread along the Chino-Thibetan borderland and on the 
Alpine moorlands, between 10,000 and 13,000 feet elevation, and is 
numerically one of the commonest plants. It occurs in countless thousands, aS 
indicated by the photograph, and is possibly the finest of all red-flowered 
_hardy Cypripediums. The flowers are solitary, very large, with sepals and © 
petals striped and reticulated with reddish purple on a paler ground colour, 
and the pouch usually dark maroon purple, rarely paler. This species was 
introduced to cultivation several years ago, Mr. Wilson having sent a few 
ati 
