57 
and soon mark a cord of long soft vesicular tissue, which oc- 
cupies the centre of the style. 
This cord of conducting tissue, of hexagonal form, in the 
true Campanulas, whose stigma has three arms, is perfectly 
distinct from the surrounding tissue, much more dense, and 
coloured; it is easily separated, and is entirely composed 
of vesicles of a cylindrical or somewhat. fusiform figure, very 
long, colourless, quite separate at the sides, articulated to 
each other, end to end, and containing very small regular glo- 
bules of starch, becoming blue upon the application of iodine. 
The pollen tubes which penetrate between the utricles of 
this tissue are easily distinguished by being much finer, un- 
articulated, and filled with very fine indistinct granules. 
120. BLETÍA secunda; foliis oblongo-lanceolatis acuminatis 7-nerviis, flori- 
bus racemosis, sepalis petalisque herbaceis subsegualibus cuneato-oblongis 
secundis collateralibus, labelli trilobi laciniis lateralibus nanis erectis in- 
termediâ membranaceá obovatâ emarginatá margine inflexá secus medium 
bilamellatá. 
Flowers green slightly dotted with crimson, with a straw- 
coloured labellum. A species of no beauty, imported from 
Mexico by Messrs. Loddiges. It is remarkable for the sepals 
and petals being all directed into a plane parallel with the 
labellum and overlying the column. - 
121. TRIGONIDIUM ringens; pseudo-bulbis compressis subrotundis, foliis 
oblongis recurvis coriaceis nitidis, scapo filiformi stricto distanter vagi- 
nato foliorum longitudine, perianthio bilabiato : sepalo postico arcuato 
petalisque oblongis margine revolutis labium superius lateralibus oblongis 
apice obtuse carinatis inferius formantibus, labelli trilobi nani ciliati pu- 
bescentis lobis lateralibus dentiformibus : intermedio revoluto in medio 
lucido basi callo reniformi antic? obsolete tridentato aucto, columnâ 
pubescente. 
A singular species of Orchidaceous plant, forming dense 
patches of fine vigorous deep green pseudobulbs and leaves, 
promising something much better than the little insignificant 
scentless yellowish-green flower which they produce. The 
latter stands singly at the end of a very slender erect scape, 
and is distinctly divided into two lips. The labellum is very 
finely downy, ciliated at the edge, and slightly bearded along 
four of the veins near its base on the upper side. The column 
is moreover downy, and has a small collection of minute shining 
hairs near its base. ‘The species was introduced from Mexico 
by Mr. Hartweg ; but had been previously discovered in shady 
G. August, 1840. h 
