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PL. CCXCIIIT 
CORYANTHES LEUCOCORYS Ro tre. 
THE WHITE-HELMETED CORYANTHES. 
CORYANTHES. Sepala libera, patentissima, magna, irregulariter undulato-flexuosa, posticum lateralibus brevius 
latiusque. Petala sepalis multo minora, erecta, torta. Labellum carnosum, ungue longo patente cum basi columnae 
continuum, lobi laterales in medio ungue in appendicem poculiformem connati, medius magnus, galeatus. Columna 
longiuscula, teres, apice inflexo-clavata vel breviter bialata, apoda, basi biauriculata vel bicornuta; clinandrium 
parum prominens, Anthera terminalis, opercularis, incumbens, convexa, carnosa, bilocularis ; pollinia 2, cerea, anguste 
oblonga, sulcata, inappendiculata, anthera dehiscente stipiti lineari affixa, glandula parva. 
Herbae epiphyticae, caulibus abbreviatis, mox in pseudobulbos carnosos apice bifoliatos incrassatis. Folia 
ampla, nervosa, subplicata. Scapi ad latera pseudobulborum reflexi, simplices. Racemi laxe pauciflori, floribus maximis 
breviter pedicellatis. 
Species circa 10, Americae tropicae incolae. : 
Coryanthes Hook. Bot. Mag., LVIII (1831), t. 3102. — BENTH et Hook. F. Gen. Plant., Ill, p. 549. 
Coryanthes leucocorys. Pseudobulbi oblongo-ovoidei, 1 1/2-2 1/4 poll. longi. Folia lanceolata, acuta, 10 poll. 
longa. Pedunculus 1-2 florus. Bracteae late ovatae, subobtusae, 1-1 1/2 poll. longae. Ovarium pedicellatum 4 1/4 
poll. longum. Sepalum posticum suborbiculare 1 3/4 poll. longum. Sepala lateralia oblique falcato-oblonga, subob- 
tusa, 4 poll. longa, 2 poll. lata, torta. Petala falcata, lineari-oblonga, obtusa, 2 1/2 poll. longa, 7 lin. lata. Labelli 
unguis subarcuata, 1 1/2 poll. longa; hypochilium profunde concavum, 1 3/4 poll. longum, 1 1/2 poll. latum, apice 
obtusissimum; mesochilium 3/4 poll. longum, transverse corrugatum; epichilium 2 poll. latum, 1 3/4 poll. altum 
apice trilobum, lobo medio late oblongo obtuso 7 lin. longo, lobis lateralibus ovato-triangularibus falcatis acutis. 
Columna 2 poll. longa. 
Coryanthes leucocorys ROLFE, supra. 
Patria Peruvia. 
arious shades of greenish-yellow and red have repeated themselves with 
tolerable regularity in the different species of Coryanthes which have 
successively been discovered, but now we have something decidedly 
novel and very handsome to record. It is a species with an ivory-white hood, 
which contrasts strikingly with the rose-coloured, bucket-shaped part of the lip. 
The accompanying illustration gives an excellent idea of the character of the 
plant. It is a native of Peru, whence it was introduced by Messrs Linpen, L’Horti- 
CULTURE INTERNATIONALE, Parc Leopold, Brussels, and flowered in their collection 
during June of the present year. The flower whence this description was taken 
reached me in quite fresh condition, and on opening the box I was much struck 
with its beauty and the charming contrast of its delicate colours. Nothing of 
the kind has been seen before, so far as I can ascertain, and I therefore propose 
to call it C. leucocorys, in allusion to its white, helmet-shaped hood. 
It is somewhat difficult to speak of the affinities of so distinct a plant, 
especially as some of the species are very imperfectly known, but it can well be 
compared with C. macrantha and C. Bungerothu. The strong transverse plates on 
