PL. CDXXIX. 
QDONTOGLOSSUM CRISPUM toe. var. OCELLATUM norr. 
THE CRISPED ODONTOGLOSSUM, VARIETY WITH SMALL ROUND 
SPOTS. 
ODONTOGLOSSUM. Vide Lindenia, 1, p. 11. 
Odontoglossum crispum. Vide Lindenia, I, p- IOr. 
Var. ocellatum Horv., supra. 
seg he Lindenia has already figured several varieties of Odontoglossum 
crispuin, a magnificent species so rich in superb forms and marvellous 
§ colours. But it appears that the number is inexhaustible, and we have 
to-day the opportunity to reproduce a new and very distinct form, which is 
clearly distinguished from the majority of known varieties. 
In this the spots, instead of being large and more or less grouped and 
agglomerated in the centre, are very small, round, and arranged along the 
margins, somewhat as in some of the brightest forms of O. x Ruckerianum; 
underneath as in that one; lastly the spots are bright red, not brown, as in the 
case of most of the varieties of O. crisbum. 
This beautiful variety made its appearance at the end of 1893 in the 
collection of W. THompson, Esq., of Walton Grange, Stone, a collection which 
we know is particularly rich in the rarest and most splendid Odontoglossums. 
L. L. 
SPOTS ON THE LEAVES OF ORCHIDS. 
The black spots which sometimes appear on the leaves of Orchids, and which spoil 
their appearance, are generally produced by fungi, which fix themselves on the leaves, and 
are there developed as parasites, at the expense of the cellular tissue, which they gradually 
destroy. 
These fungi belong chiefly to the genera Calospora, Dactylaria, Glaeosporium, Cladospo- 
rium, Hypodermium and Sphaerella. 
Their determination is difficult, and requires not only a thorough knowledge of subject, 
but also long and often very delicate researches, and sometimes special cultivation. 
When the fungi are separately established on a leaf, it is easy to determine if it is a 
type already known, and if by chance it is not, to ascertain quickly its characters, and to 
assign to it its proper place in the system of classification. At the same time it is possible 
Ue 
