112 THE ORCHID REVIEW. 
In the Pleurothallis group may be mentioned the curious Octomeria 
juncifolia, Pleurothallis gelida with numerous erect racemes of green flowers, 
the curious little Scaphosepalum swertizefolium, also Masdevallia Benedicti 
and M. triangularis, both flowering very freely. Some of those mentioned 
last month (page 69) are also still in flower, and the above are the principal 
additions at the present time. 
NOTE ON PERIODS OF RIPENING OF SEED. 
Tue following are results frorn a large number of observations, and may be 
interesting in connection with Mr. Mead’s notes at page 41. Unless seedlings 
have been obtained, it is not right to assume that the seed was either good or 
ripe, and the results given here are all taken from cases in which the seed 
produced healthy plants :— 
Calanthes—4 to 5 months (dozens of examples). 
Cattleyas and Lelias—never less that 11 months and up to 16 months (dozens of 
examples). 
Cypripediums—from 7 to 13 months, but in most cases 10 to 11 (hundreds of examples) 
Selenipediums—in all cases a much shorter time than Cypripedi ( f examples) 
Dendrobes—from 9 to 17 months, ina usual way 14 to 15 (many scores of examples). 
Masdevallias—4 to 7 months (probably 14 dozen of examples). 
Odontoglossums—12 to 17 months (two cases only in which plants have been raised): 
Phajus—6 to 9 months (several examples). . 
From careful observation I am strongly of opinion that the period 
necessary to produce fertile seed depends on the period usual with the seed: 
bearing parent, and that the pollen parent has little to do with the period 
necessary for the seed to ripen. 
N. G. COOKsON: 
Oakwood, Wylam-on-Tyne. 
oa 
SEEDLINGS OF DENDROBIUM NOBILE. 
AT page 168 of our last volume a note was given on a batch of seedlings 
the collection of N. C. Cookson, Esq., of Wylam-on-Tyne, obtained by 
crossing Dendrobium nobile nobilius with the pollen of D. 1. Cookson 
From the same seed-pods some good forms of each parent were obtained, 
together with a series of forms grading down to ordinary D. nobile. = 
of these plants passed into the collection of F. H. Moore, Esq., of Live 
and the first flower produced was noted at the same time, though thro 
some confusion with the others it was mentioned as an ordinary yerics 
D. nobile. This year the plant has produced eight flowers, one of which 
again sent, and is almost identical with D. n. Cooksoni, the petals bel 
almost metamorphosed into lips as in that. It is very remarkable that sue 
a series of forms should have been obtained from the same seed-poe 
course they are not hybrids, both parents being forms of D- nobile- 
