GLEANINGS AND ORIGINAL MEMORANDA. 
582, DENDROBIUM BARBATULUM. Lindley. A handsome epiphyte from Bombay. Flowers 
white. Introduced by Jas. Bateman, Esq. (Fig. 285.) 
This species is by no means rare in collections, under the erroneous name of D. Heyneanwm, which it has acquired, 
Heaven knows how, the real plant of that name being totally different. D. darbatulum was originally taken up, from 
whence I received it in 1844 from Mr. Bateman, under the name of D. Heyneanwm. It often appears at exhibitions, where 
it is pin by its erect spem of pue white muslin like flowers, in which not a tinge of any other colour is visible. The 
sepals an t d , but the petals 
are the ips of the two. The lip is three-lobed, very slightly 
downy, with two short lateral obtuse lobes, and a linear callosity 
and sketches led me into the great error of confounding this with 
the widely different D. chlorops. (See Bot. Reg., 1844.) 
' 683, LANSBERGIA CARACASANA. De Vriese, A 
stove tuberous-rooted plant. Flowers golden-yellow 
spotted with black. Native of the Caraccas. Belongs 
to lrids. Introduced to the Botanic Garden of the 
University of Leyden. 
This curi lant. , although it fl d L 1 
does not seem to have m reached etia It was obtained in the 
Caraccas by van Lansberg, a Dutch gentleman, who 
sent many fine things in eae to the Botanic Garden of that uni- 
versity. . Professor De Vriese describes it as having the habit of 
Marica, Phalocallis, Cypella, Morsea,&c. The root tuberous. 
Stems simple, compressed, zigzag, tumid at the joints, half a yard 
long. Radical leaves equitant, distichous ; stem-leaves sheathing, 
compressed, from three to five times shorter than the others. 
Spathes terminal, compressed, leafy with pellucid membranous 
edges. Sepals largest, expanded from a narrow base, then con- 
said to flower all the year round i in the stove, one flower only ap- 
pearing at a time, and very fugacious. The learned author of the 
genus observes that Phalocallis has a eS AE flower with 
spreading sepals; Lansbergia, on the contrary, has all the sepals 
closed and converging, besides which its leaves are neither plaited 
nor ribbed, In Phalocallis the cells of the anther are attached by 
the upper part only to the lobes of the style, but in Lansbergia they 
adhere by their whole length. In the former the sti 
transversely two-lobed, in the latter they are minutely crested, and 
