Refugium Botanicum.| (June, 1869. 
TAB. 94. 
Tribe EpmpENDRE®. 
Genus Hartrweaera, Lindl. 
H. purpurea, Lindl. Bot. Reg. 1837, sub 1971! Caulibus secundariis 
a basi tumida in pseudobulbos cylindraceds seu extinctoriiformes 
sulcatos a squamis vestitos extensis monophyllis, folio a basi rotun- 
data imo subcordata triangulo seu lanceo, acuto, valde coriaceo- 
carnoso, pedunculo longissime exserto multi-articulato, articulis a 
vaginis neryosis prope tectis, apice racemoso, post racemi termi- 
nalis anthesin nunc ramulis lateralibus racemigeris pauiculato, 
bracteis triangulis ovaria pedicellata longe non sequantibus, mento 
obtusangulo, sepalis oblongo-triangulis obtuse acutis, sepalo su- 
premo angustiori, tepalis lineari-ligulatis obtusis, labello usque ad 
medium cum columna connata, ima basi saccato, dein sigmoideo, 
parte libera cordato-triangula seu ovato-triangula, ima basi involuta, 
lobulato plicata, columna trigona arcuata, apice paulo seu alis dola- 
briformibus dilatata. — H. purpurea, Lindl., var. angustifolia, Bot. 
Reg. 1848, Mise. 58! 
A highly interesting genus, standing near Hexissea, Lindl., but 
well distinguished by the base of the lip and column. It was 
discovered by, and named in honour of, Hartweg, the excellent 
traveller of the Royal Horticultural Society. It has frequently 
been found in various parts of S. Mexico, by Schiede! Ehren- 
berg! Jiirgensen! Leibold! Galeotti! »We obtained it from 
Guatemala through Dr. Bernoulli! 
Rhizome short, annulated, with some whitish flexuose roots. 
Pseudobulbs rounded at their bases, then cylindrical or cylin- 
drical-infundibular, with some ribs covered with sheaths. Leaf 
very leathery, fleshy, of very various forms, heart-shaped, rounded, 
rarely subcuneate at its base, obtriangular or nearly oblongo- 
lanceolate, acute, mottled with whitish green on a dark green 
surface. Peduncle very long, even two feet long, much articu- 
lated, the joints covered with ancipitous acute sheaths. In- 
florescence a terminal raceme, followed by some lateral racemes 
in very strong individuals, exactly as in Hpidendrum fuscatum. 
Bracts triangular, much shorter than the purplish stalked ovaries. 
Flowers amethyst-colour. Chin blunt. Sepals oblong, the lateral 
ones broader at their base. Tepals ligulate, acute. Lip half- 
