44 THE ORCHID REVIEW. [ MARCH-APRIL, 1919. 
(Gartenflo., viii. p. 353, t. 275, fig. 1), this plant having been received from 
M. Luddemann, Paris, under the erroneous name of O. maculatum. 
O. MACULATUM, Llav. & Lex., was originally described in 1824 (Nov. 
Veg. Descr., i. p. 35), from specimens collected on trees on the Irapean 
Mountains, near Vallisoleta, in the Stateof Michoacan. Fifteen years later 
the species flowered in the collection of Mr. Barker, and was figured by 
Lindley (Bot. Reg. xxvi., t. 30), who noted its distinctness from O. cordatum, 
_and mentioned a wild Mexican specimen collected by Count Karwinsky, 
which he had received from Mr. Bateman. This and a flower of Mr. 
Barker’s plant are preserved in Lindley’s Herbarium, but the sheet also 
contains specimens of O. cordatum that were added at a later date. In 
1858, O. maculatum was figured and described by Lemaire, under the name 
of O. anceps (Ill. Hort., iv. p. 157, t. 128), from a plant which flowered in ° 
the establishment of M. Verschaffélt, and which had been received from 
Mexico direct, through the brothers Tonel. It is said to be allied to O. 
cordatum, which rather suggests that the true O. maculatum may have been 
entirely overlooked. | 
| The distribution of the two species is very imperfectly known. O. 
cordatum has been collected in Guatemala, at the Cumbre de Chocas, by 
Hartweg, and in a locality unspecified by Skinner, while from South 
Mexico we find specimens localised Oaxaca, 4,000 feet, Galeotti, and 
Orizaba, F. Mueller. The latter specimen has a curious history. In 
Lindley’s Herbarium the collector’s ticket is wrongly inscribed “ O. 
hastilabium, Lindl. Bot. Mag. t. 4278,” and the specimen is mounted on 
‘the sheet of O. maculatum. The corresponding Kew specimen is labelled 
“O. maculatum, teste Lindley.’ Both are simply O. cordatum, but the 
confusion does not affect the original specimens, for the date is 1853. O. 
maculatum also occurs in the Oaxaca district, but at a higher altitude, for 
there are wild specimens from several different collectors, the altitudes 
tanging from 7,000 to 9,000 feet, and the species also occurs in the State of 
Michoacan, a considerable distance to the north west of Oaxaca. Whether 
the areas of the two anywhere overlap is uncertain, but it is significant 
that collectors of O. maculatum and O. Rossii have not collected O. 
cordatum. Perhaps some of our readers in Central America can throw 
further light on the subject. 
There is a very distinct variety of O. cordatum, calléd sulphureum 
(Rchb. f. in Gard. Chyon., 1880, ii. p. 8), which may be regarded as the 
albino of the species, as it has entirely lost the brown markings, leaving the 
flower light green with the usual white area on the lip. It flowered in Mr. 
Lee’s fine collection at Leatherhead. Mr. Day figured a similar plant in 
May, 1883 (Orch. Draw., xxxv. t. 27), this having been obtained from Mr. 
-R. Jones, Lower Norwood Nursery. R.A.R. 
