APRIL, 1916.] THE ORCHID REVIEW. gi 
C. roseum, however, is somewhat different. It is decidedly dwarfer, 
and has a more slender scape, smaller flowers, the segments well veined 
with rose, and the lip more like C. Schreederi in shape and markings. Mr. 
Hamilton Smith raises the question whether there may not be some other 
Species in the district which would give such a hybrid, or whether it may 
éven be a distinct species. We know that C. Ballianum, C. erythrostylum, 
and C. Sanders (C. Parishii var. Sanderz) also grow in the same district, 
but none of them crossed with either C. insigne or C. Schroederi would give 
Such a hybrid, and neither the circumstances of its discovery nor its 
characters points to the probability of its being a distinct species. But C. 
glebelandense recrossed with C. Schroederi might give such a hybrid. The 
chief difficulty is the rosy colour, but the resemblance to C..Schreederi is so 
great, and analogy with other secondary hybrids would lead us to expect 
both Tosy and greenish forms in such a batch. We hope that Mr. Hamilton 
Smith, if he has not already done so, will raise sucha batch of seedlings. 
The above case opens a very interesting question, and not for the first 
time. Whenever allied species that grow intermixed in a wild state 
intercross, yielding natural hybrids, there is the probability that they have 
One so for countless generations, and that the hybrids, if fertile, have again 
<rossed with both the parents, thus connecting two distinct species by what 
has been called a chain of intermediates, and obscuring their natural limits. 
In this way there may sometimes be generations of secondary hybrids, but 
without it the well-known polymorphism of secondary hybrids is sufficient 
~ account for the series of perplexing intermediates and reversions met with 
mM such cases. Here is a good opportunity to test the question. R.A.R. 
[eS] enoroniow WOLLASTONII. | Arie | 
STRIKING Dendrobium of the section Latourea has just flowered in 
the collection of the Hon. N. C. Rothschild, Ashton Wold, Oundle 
(gr. mr, C, Wright), of which the inflorescence has been sent to Kew. It 
4S one of the species found during the recent Wollaston Expedition to 
Dutch New Guinea, and has been described under the name of D. 
Wollastonii, Ridl. It is most comparable with D. Forbesii, Ridl., but has 
larger flowers, and the lateral sepals, instead of being smooth at the back, 
@Te Covered with long white hairs, as in the pedicels of both species, where 
also are Many small purple markings. The flowers are light cream yellow, 
With radiating carmine veins on the side lobes of the lip, and a darker 
Suffusion of the same colour at the crenulate margin. The sepals are very 
acuminate, 1} inches long, and the spathulate petals 1 inches long, with a 
longitudinally folded limb over 1} inches broad when opened out, and a 
af 
