PL. CCCXI. 
TRICHOCENTRUM TRIQUETRUM ROLFE. 
THE THREE-ANGLED TRICHOCENTRUM. 
TRICHOCENTRUM. Sepala subaequalia, libéra, patentia. Petala sepalis similia. Labellum basi cura 
columna in urceolum connatum, basi in calcar descendens productum, supra urceolum erectum, biauriculatum v. 
nudum; lobi latérales parum dilatati, erectiusculi, médius explanatus, late bilobus, sepalis multo longior. Columna 
brevis, crassa, fere ad apicem adnata, apoda; clinandrium antice latiuscule bilobum, dorso breve. Anthera terminalis, 
opercularis, incumbens, semiglobosa, imperfecte bilocularis; pollinia 2, cerea, ovoidea, compressiuscula, inappen- 
diculata, anthera déhiscente stipiti piano cuneato affixa, glandula ovata. 
Herbae epiphyticae, caulibus brevissimis unifoliatis demum in pseudobulbum parvum carnosum incrassatis. 
Folia coriacea. Scapi inter pseudobulbos brèves, plurivaginati, uniflori v. rarius biflori. Flores médiocres v. majusculi. 
Species circa 20, Americae tropicae a Brasilia usque ad Americam centralem incolae. 
Trichocentrum Poepp. et Endl. Nov. Gen. et Sp., II (1838), p. il, t. 115. — Benth. et Hook. f. Gen. Plant., 
III, p. 559. 
Trichocentrum triquetrum. Folia equitantia, 6 poil, longa, basi 6 lin. lata, apice attenuata, acuta. Pedunculi 
axillares, 1 poil, longi, pauciflori. Bracteae conduplicatae, lanceolato-lineares, acutae, 6 lin. longae. Ovarium 
pedicellaturrr, triquetrum. Sepala ovato-lanceolata, acuta, 9 lin. longa, 4 1/2 lin. lata, straminea, lateralia ad 
calcar labelli adnata. Petala suborbi cul aria, 7 lin. longa, 8 lin. lata, straminea. Labellum reniformi-orbiculare, 
9 lin. longum, 14 lin. latum, stramineum, aurantiaco-maculatum, basi bicarinatum, calcar gracile, 1 1/4 poil, 
longum, attenuato-acutum. Columna crassa, alis brevibus et rotundatis. 
Trichocentrum triquetmim Rolfe in Gard. Chron., 1891, pt. I, p. 701. 
richocentrums, though small, are élégant little plants, and a few of 
the species are decidedly pretty, though for some reason they are but 
rarely met with in gardens, and are invariably classed as botanical 
Orchids. The présent species, which is a very interesting one, was introduced 
from Peru by Messrs Charlesworth Shuttleworth & C°, of Heaton, Bradford, 
and of Clapham, and flowered for the first time in May 1891. Some little 
time afterwards it flowered with Messrs Linden, L’Horticulture Interna¬ 
tionale, Brussels, from which source the annexed plate has been prepared. 
The genus naturally falls into two sections, the one with flat and horizontal, 
the other with equitant and vertical leaves. The latter comprises two very closely 
allied species, T. lYidifoliUTU Lindl. and T. plcctYophoYUiu Rchb. f., natives 
of Guiana, which are possibly only forms of one and the same species, as 
Lindley, as well as Focke, evidently thought. The présent species also belongs 
to the same section, but is altogether larger, both in leaf and flower, and has 
very different petals and lip. It has somewhat of the habit of an Iris, or of 
Maxillaria iridifolia , and is about six inches high, the flowers being straw 
coloured, with the lip spotted and variegated with dull orange, forming a very 
pretty contrast. The triquetrous ovary strongly recalls Angraecum Leonis , though 
