Tas. 6190, 
MASDEVALLIA Davis. 
Native of Peru. 
Nat. Ord. OrcHIDE®.—Tribe PLEUROTHALLIDE. 
Genus MASDEVALLIA, Ruiz and Pav. (Lindl., Gen. and Sp. Orchid., p. 192). 
MASDEVALLIA Davisii; foliis 8-pollicaribus anguste lineari-oblanceolatis sub- 
acutis carinatis crasse coriaceis, scapis gracilibus foliis longioribus, floribus 
horizontalibus aureis, ovario brevi, sepalis in tubum subcylindraceum basi 
gibbum connatis breviter caudatis, supremo minore ovato in caudem wqui- 
longam attenuato marginibus recurvis, lateralibus maximis 2} poll. longis, 
fere parallelis in caudas } poll. longas abrupte angustatis sinu angusto, 
etalis dimidiato-oblongis apice obtusis emarginatis basi antice auriculatis, 
abello lineari-oblongo obtuso 3-carinato, columna apice erosa: 
M. Davisii, Reichb. f. Xen. Orchid., v. 3, t. 3, ined., et in Gard. Chron., 1874, pp, 
vei: egy 
This fine Masdevallia is remarkable for its size and colour. 
It was discovered by Mr. W. Davisnear Cuzco in Peru, and 
was flowered by Messrs. Veitch in August of the present year ; 
the plant here figured bearing twenty flowers. Singular as the 
colour is, it is probably very variable. Reichenbach describes 
the perianth-tube as ‘‘ whitish yellow, with a blackish-violet 
great eye-spot on each side;” and the other parts of the 
flower as ‘yellowish white outside and of the deepest 
splendid orange inside;” colours not at all repeated in our 
specimen. 
Descr. Leaves six to eight inches long exclusive of the 
short part below the joint, two-thirds of an inch broad, 
narrowly oblanceolate, obtuse, keeled, concave above, dark 
green, thick, and coriaceous; sheaths one inch long, pale, 
loose. Scapes slender, longer than the leaves. Flower nearly 
horizontal, four inches long from the tip of the upper to that 
of the lateral sepals, one and a half inch broad across the 
lateral sepals, pale golden yellow, with obscure small orange 
markings at the base of the perianth externally. Ovary very 
short, curved, grooved, green. Sepals combined at the base 
into a subcylindrical tube two-thirds of an inch long, which 
is gibbous at the base; upper two inches long, ascending, 
broadly ovate, margins recurved, gradually contracted into a 
