11. MAXILLARIA triangularis. 
M. triangularis; caulescens, pseudobulbis ovalibus ancipitibus utrinque 
corrugatosulcatis, foliis ligulatis apice obliquis, floribus solitariis axil- 
laribus ebracteatis, sepalis subæqualibus patentissimis margine in formam 
triangularem recurvis lateralibus paulo majoribus, petalis conformibus 
minoribus erectis, labello oblongo ciliato puberulo cum columna 
parallelo emarginato concavo medio verrucà solitarià polità aucto, 
antherà conicà scabrà. 
This is nearly related to the beautiful Maxillaria tenui- 
folia, and like it is a discovery of Mr. Hartweg's, who found 
it in the village of Quezaltenango in Guatemala. Its leaves 
are very much larger than in that species (10 by 14 inches); 
the flowers are formed singly in the axils of the imperfect 
leaves, which precede the appearance of the perfect leaves 
and terminal pseudo-bulbs of such plants; they are of a rich 
cinnamon brown gaily mottled with crimson flecks. The 
sepals which spread widely apart are folded back at their 
edges into a triangular form. It flowered in the garden of 
the Horticultural Society in December, 1844. 
12. EPIDENDRUM aéridiforme. 
Booth in litt. 
E. (Spathium) aeridiforme; caule folioso tereti, foliis elongato-oblongis obtusis 
cum mucrone, pedunculo terminali elongato squamis acuminatis vestito, 
racemi 7-8-flori abbreviati nutantis axi pedunculis breviore, bracteis 
squamæformibus acutis, sepalis petalisque oblongis coriaceis obtusis his 
pauló angustioribus, labello carnoso tripartito cordato basi bituberculato 
laciniis lateralibus oblongis obliquis intermedià cuneatä apiculatä. 
« This plant was introduced from Rio in 1839, and added 
to the collection of Sir Charles Lemon, Bart, M.P., at 
Carclew, where it flowered in December, 1843, and again 
about the same time the following year, when the accompany- 
ing figure was made of it. In habit and mode of growth it 
bears some resemblance to Ep. mutans, as well as to Ep. 
patens, agreeing partly with the former in foliage, and with 
the latter in having a deeply-divided 3-lobed labellum, but 
widely differing in other respects from either. Roots round 
and straggling, ash-coloured, thick and fleshy, partly terres- 
trial, but more generally, I suspect, adhering for support to 
the stem of any tree that may be near it. Stem erect, nearly 
February, 1845. c 
