is) 
on 
Eye A INU GOS Anca, 
Pseudobulbis tenuibus teretiusculis costatis, racemo pendulo bi-quadrifloro; bracteis lanceolato-oblongis acutis ovaria pedicellata punctulata sub-dimidia 
zequantibus ; sepalis lanceolatis acuminatis; petalis lanceolatis acuminatis ; labelli ungue latiusculo; hypochilii laciniis erectis semifalcatis ; epichilio basi 
utrinque triangulari-obtuso, hinc si mavis trifido, per discum carinulis transversis abruptis angustis ruguloso, antice callis stipitatis capitatis Paphinia cristate, 
Ldl., marginato, callo bi-v. tricruri in basi epichilii, cruribus teretiusculis apice clavatis antenneformibus; columna apice utrinque dilatata, basi tumore didymo. 
PAPHINIA RUGOSA, Rchb. f. in Linnea, XLI., 1877, p. 110; Gard. Chron., Oct. 25, 1879, p. 520 (et var. Sanderiana) ; id., July 24, 1880, p. 102; id., 
Dec. 18, 1880, p. 778 (var. Kalbreyeri). 
An elegant little species, allied to the well-known P. cristata, Lindl. but readily distinguished by the proportionately larger lip, different crest, and by 
the shorter and much more swollen foot of the column. Both species are somewhat variable in colour, but in the present one the purple colour of the 
segments is usually arranged in spots rather than in longitudinal stripes. It appears to be very rare. R. A, Rolfe. 
Icones analyticae. Columna et labellum a latere visa. Columna a fronte visa. Pollinarium a fronte visum. 
Tuts pretty free-flowering species blossoms during the summer months; the flowers are about the size of those of 
P. cristata, and are borne on pendulous scapes, which are usually two-flowered, though occasionally as many as four are 
borne on the same raceme. The sepals and petals are yellowish white, marked in a very distinct manner with chocolate- 
purple spots. The labellum is of a reddish plum colour, ornamented with a white fringe. It is a native of New Grenada, 
where it is found growing on high trees, but always in dense shade, and more often appearing on those trees situated 
near the rivers and water-courses. It is a rare plant, confined to very narrow limits, and requires a great deal of 
searching for and difficulty in collecting. A note from our collector at the time of its introduction states that “large 
ants and numerous scorpions prevented him from obtaining more than a small quantity of the few plants he saw.” It 
succeeds best in small pans suspended near the roof in a stove temperature, and revels in a humid atmosphere. Its 
quaint shape and exquisitely coloured flowers always excite the admiration of the connoisseur, and well repay a little 
extra care and attention in its cultivation. 
Taken from a plant in the collection of W. S. Kimball, Esq., Rochester, New York, U.S.A. 
ZYGOPETALUM XANTHINUM zea. ¢ 
ZYGOPETALUM XANTHINUM, Rchb, f,, Pseudobulbis ovoideis tetragonis 1—2 foliis, foliis anguste lanccolatis, pedunculis ascendentibus brevibus 
unifloris, bracteis ovatis mucronatis cucullatis, sepalis petalisque lanceolato-ellipticis patentibus subequalibus v. petalis latioribus, labello trilobo, lobo medio 
obovato, lobis lateralibus erectis subfalcato-oblongis obtusis, callo carnoso abbreviato lato truncato quinque- 
dentato, columna abbreviata subclavata. 
ZYGOPETALUM XANTHINUM, Rchb. f, in Walp. Ann. VI. (1863), p. 659. 
MAXILLARIA XANTHINA, Lindl. Bot. Reg. XXV. (1839), sub. t. 17. 
PROMEN@A XANTHINA, Lindl. Bot. Reg. XXIX. (1843), Misc. p. 13. 
ZYGOPETALUM CITRINUM, Nicholson, Dict. of Gardening, IV., p. 245; Rolfe, in Gard. Chron., July 28, 
1888, p. 94. 
MAXILLARIA CITRINA, Don, Hort. Cantab., ed. 13 (1845), p. 602 ; Lyons, Treatise on Orch. Pl. (1845), 
PROMENGA CITRINA, Don, Hort. Cantab,, ed. 13 (1845), p. 720; Warn. & Will. Orchid Album, I, t. 17. 
MAXILLARIA GUTTATA, Hort., ex Rchb. f. in Bot. Zeit., X., p. 672. 
Crescit in Brasilia, ubi detexit cl. Gardner in Organ montibus, Maio 1837. 
Planta pusilla, elegans. Flores flavi, columne facie brunneo-rubro, et labelli lobis lateralibus rubro 
punctatis. 
This graceful little plant was detected on the Organ Mountains, Brazil, by Gardner, in May, 1837. His 
original ticket records it as growing on the stems of trees at an elevation of nearly 5,000 feet. There is a good 
deal of confusion about the name, as the above synonymy will show. First with regard to the genus. It is 
usually known in gardens under the generic name of Promencea, which, however, Reichenbach as well as Bentham and Hooker regard as only a section 
of Zygopetalum, differing chiefly in the peculiar habit and distinct side lobes of the lip. With regard to the specific name, it will be observed that 
the original name of xanthinum has been quite lost sight of in gardens, while that of citrinum is almost universally applied to it. In the Orchid Album 
it is remarked that neither Lindley nor Reichenbach refer to Promencea citrina, and that the latter suggested that it might be a garden name. The change of 
name, however, admits of a very simple explanation. Don, in the thirteenth edition of his Hortus Cantabridgiensis, published in 1845, speaks, on page 602, of 
Maxillaria citrina of the Botanical Register, and, on page 720, of Promencea citrina of the same work. In each case the name is erroneous, and should read 
“xanthina.” But the error, once introduced, has remained down to the present day. Lyons, in his Treatise on the Management of Orchidaceous Plants, 
p. 176, also includes Maxillaria citrina, but I suspect he is simply following Don, although the two works both appeared in the same year, according to the 
title-pages. Of course the oldest name, which is equally applicable, should be retained. R.A, Rolfe. 
Icones analyticee. Flos, cum labello ex- 
panso, Columna, antice et a latere visa. 
Pollinarium antice et a latere visum. 
Tus dwarf-growing epiphytal Orchid produces ascending one-flowered scapes from the base of the oval-tetragonal 
pseudo-bulbs. The flowers are yellow, with spreading sepals and petals, lasting a long time in perfection, and are 
produced during the summer months. This as well as the other few species of the section Promencea are all natives of 
Brazil, and were formerly considered as representing a distinct genus, though both Reichenbach and Bentham and 
Hooker now concur in merging it in Zygopetalum. All are very interesting, and some of them very curious and quaintly 
coloured. They should be grown in a cool house during the summer months, and in a warm house in the winter. We 
have found that they thrive best in small pans suspended near the glass, and require abundance of water when making 
their new growths. Care should also be taken to keep them free from yellow thrips, as these insects soon destroy the 
delicate tissues of their leaves. It would be an extremely interesting study for an ardent amateur to take up and grow all 
the miniature Orchids obtainable. What extraordinary forms and colouring they possess ! 
Our plate was taken from a plant in the collection of Herrn W. Lauche, Eisgrub, Mahren, Austria. 
