to that species. After critical examination of the flowers 
of the two specimens, we were led to believe that they 
are referable to H.costatum A.Rich. & Gal. and on this 
assumption an amplified description of the species based 
upon these specimens is given below. 
Another specimen from the same locality, in the col- 
lection of Erik M. Ostlund, has been examined in the 
preparation of the amplified description. 
Plant often caespitose, up to 26 cm. and more tall 
(largest plant incomplete). Roots stout for the plant, 
numerous, fibrous, flexuous, longitudinally sulcate when 
dry. Stem stout or slender, up to 8 mm. in diameter, en- 
tirely concealed by sheaths which are deciduous below 
rendering the lower portion of the stem naked, more slen- 
der at the base. Leaves distichous, linear-elliptic to ob- 
long-elliptic, up to 10 em. or perhaps more long, 7—16.5 
mm. wide, obtuse to acute, sometimes recurved and con- 
duplicate, coriaceous. Inflorescence sessile, racemose to 
densely and shortly paniculate, few- to many-flowered. 
Lateral sepals fleshy, more or less carinate on the outer 
surtace, broadly elliptic to rounded-oval, slightly oblique, 
7.8-11.2 mm. long, 5-5.5 mm. wide, acute to obtuse, 
margins of the upper part somewhat involute. Dorsal 
sepal oblanceolate or narrowly obovate, 9-12 mm. long, 
4.5—5.2 mm. wide, acute to obtuse, more or less thickened 
at the apex, sometimes cucullate. Petals spatulate to ob- 
lanceolate, 9-12.1 mm. long, 2.9-4.9 mm. wide, rounded 
to subacute, 3-nerved. Lip simple to weakly 8-lobed, 
suborbicular-reniform to orbicular, distinctly retuse or bi- 
lobed at apex, base strongly cordate, claw entirely adnate 
to the column; lamina 10.5—14 mm. long (extreme over- 
ull measurements), 18.5-15 mm. wide, margins erose to 
subcrenulate and often rather plicate toward the apex: 
disc with fleshy radiating keels above the nerves, the three 
middle parallel ones most prominent, bicallose at the base. 
[ 65 
