ONCIDIUM JONESIANUM ress 7 
(Teretifolia.) Folia tereti subulato acuminato, rarissima usque pedali, illi Oncidii adscendentis Lindl. simili ; racemo plurifloro grandifloro ; sepalis 
tepalisque cuneato oblongis obtusis undulatis, tepalis paulisper majoribus, labello basi humerato utrinque oblongo auriculato isthmo brevi, lacinia antica magna, 
subreniformi biloba, cullo baseos quinquemembrato, carina mediana ultra apicem ; lamina semipatellari in basi, lamina anteriori minori obtusangula utrinque, 
papulis acutis dentibusque adventitiis nonnullis, tabula infrastigmatica producta, aliis subquadratis nunc angustissimis, nunc subevanidis, 
ONCcIDIUM JONESIANUM, Rchb. f, Gard. Chron,, N. x., Dec. 22, 1883, p. 781. 
Sepala et tepala albida seu albido straminea maculis numerosi brunncis, Labellum auriculis baseos flavis, calli 
Nune macule brunnez nulle, nunc numerosz in labello tale specimen pulcherrimum misit exc. Baron Hrmby Pezkawensis. 
purpureo seu brunnco picta, 
Paraguay. St. Leger, Nunc magna copia colitas in Anglia ubi pulcherrima specimina vidi in collectionibus Sir Trevor Lawrence, Mr, Lee, ac apud 
exc, Sander, 
6. PHAANTHUM ; Sepalis tepalisque brunneis, callo reducto. (Habuitantum ab exc. Eq. Trevor Lawrence.) H. G. Rehb. f. 
bido stramincis brunneo maculatis. 
Columna albostraminea varie 
Columnz duz a latere, altera bene alata 
Icones analytic. Labelli basis cum callo. Callus valde auctus a latere. Columna una antice, sine anthe 
sine anthera, altera ala-subevanida, anthera insidente. Pollinarium antice ac postice. Omnia aucta, 
Ir is not often that such a beautiful Orchid as this is finds its way into cultivation under such singular circumstances. 
Probably no European knew of its existence until about four or five years ago, and the plant actually flowered in 
England before anyone was aware of its extreme beauty. Its introduction to Europe is due solely to Mons. St. Leger, a 
resident in Asuncion, the capital of Paraguay. This Orchid was first discovered by him when travelling northwards in 
Paraguay, on the borders of Matto Grasso, and he at once sent dried flowers of it to England, but, as no particular beauty 
was discerned in them, not much notice was taken of the discovery at the time. In 1883 Mr. St. Leger arrived in England 
with a large collection of Orchids which he had gathered in his travels, and these included Oncidium Jonesianum. The 
plants of it were sold by auction in London, but did not realise high prices as they so nearly resembled another terete- 
leaved and not very showy Oncidium, viz., O. Cebolleta, and Orchid growers suspected the new arrival to be identical 
with that species. Those who bought the strange looking Orchid so cheaply soon found that they possessed not only a 
beautiful but one of the most distinct Orchids in cultivation. 
The plant as shown in our plate is so admirably depicted by the artist that a description of it is scarcely necessary. 
Of the two varieties here represented the large spike shows a good form coloured in the usual way, whilst the other 
represents a variety that, up to the present time, is unique as regards the peculiar coloration of the flowers; this plant is 
now in the possession of Sir Trevor Lawrence. Seeing that this very distinct variety has so soon appeared, we may 
expect other beautiful forms to occur out of the thousands of plants that have been imported. So far there has been no 
variation as regards the habit of growth in the plant. The natural tendency of the leaves to grow downwards is a 
ya citrina and the Scuticarias. 
peculiarity which characterises a few other Orchids, notably Cattle 
If treated similarly to the Mexican Orchids this Oncid is one of the easiest plants to grow and _ flower 
well, as the climate of the northern parts of Paraguay is similar to that of Mexico. The summers are very 
hot and the winters cold, consequently the plants develop their growth quickly, and afterwards enjoy a protracted period 
of rest. The best way to grow this Oncid is on blocks of some hard wood, such as that of the apple or thorn, or 
preferably on teak rafts, as these are more durable and have a neater appearance. The plants should be firmly fastened 
leaves downwards to the blocks or rafts with copper wire, and ample space should be allowed on each block or raft for the 
future growth of the plant, as it is not an easy matter to remove the fleshy roots after they have once fastened themselves 
upon the wood. The plants usually commence active growth in April, and should then be suspended close under the roof, 
in a light position, and in a moist and warm atmosphere, like that of an East Indian house. The plants should be placed 
in full sun, as shading induces a soft growth, and they require to be frequently syringed during the daytime. The 
growths continue to develop until about the end of September, which is the close of the flowering season. When the 
new pseudo-bulbs are fully grown the plants should be removed to a cooler temperature, and syringed once a day through- 
out the winter until February, when signs of returning activity in the plants are apparent. They should then be syringed 
more frequently, and the temperature will naturally rise with the longer days. This treatment continues till April, when 
the plants are removed to the East Indian house as their summer quarters. 
isq., Cambridge Lodge, Camberwell. 
evor Lawrence, Bart, M.P., Burford Lodge, Dorking, 
ONCIDIUM JONESIANUM drawn from a plant in the possession of R. J. Meas 
ONCIDIUM JONESIANUM PHAANTHUM from a plant in the collection of S 
