66 ANNALS OF ROYAL BOTANIC GARDEN, CALCUTTA. 
PLATE 99. 
HABENARIA (Platyglossa) TRIFLORA, Don.? 
H. triflora; caule dense folioso, foliis suberectis imbricatis ellipticis acutis in bracteas 
angustiores foliaceas ovaria superantes transeuntibus, spica brevi dense multiflora, floribus 
amplis albis, sepalis orbicularibus, petalis minutis linearibus, labello ^ magno sepalis 
multo majore late obcordato sinu elongato fere clauso, lobis lateralibus semi-orbieu- 
laribus v. dimidiato-obovatis integerrimis, terminali lineari lateralibus vix longiore, 
calcare ovario multo longiore, anthera latissima. 
Has.—unrecorded, 
Stem stout, closely invested by the imbricating suberect leaves, probably more than 
a foot high, the upper part (above figured) 8 in., with the inflorescence. Leaves 
13—2 inches, smaller and narrower upwards, and passing into long green lanceolate 
sheathing bracts an inch long and more, from amongst which the perianth with its spur 
alone protrudes. Spike densely-fld., probably elongating to several inches; ovaries 1 in., 
not beaked; flowers 1 in. broad, pure white. Sepals incurved, 5-nerved, the outer pair 
with branching nervules towards the margin; petals l-nerved. Lip as broad as the rest 
of the flower, cleft nearly to the base into two very broad lobes, with a slender inter 
mediate lobe and 2 calli at the base; spur slender, green, much longer than the ovary, 
slightly curved. Anther very large and broad, cells marginal incurved; rostellum 
apparently a minute tooth on the broad face of the column. 
I have been much exercised in my mind about the drawing here reproduced, which represents 
& remarkably fine plant, unfortunately with no note of locality or collector, but presumably one 
that flowered in the Calcutta Botanic Garden. At first I was disposed to consider it a many-flowered 
gigantic state of the Himalayan H. Рога, Don., which has similarly short, often imbr icating leaves, 
long bracts, erect flowers, small narrow petals, a large broad lip with two basal calli, very long spur, 
and broad anther; but in that species the lateral sepals are narrow and erect, the flowers 1—3 only, and 
the side lobes of the lip crenulate. There is no other species to which this is at all nearly allied; 
and, considering the danger of constituting new species on drawings, especially on those of native artists’, 
it appears to me the best course to refer it doubtfully to H. triflora, with which it agrees in the bracts, 
large flowers, small linear petals, the spur, approximately in the shape of the lip, and especially in the 
broad anther. | ( | 
| | ig. 1, front and 2, back views of flower; 3, the same with the perianth-segments displaced; 4, lip; 
. 5, pollinia :—ай enlarged, 
PLATE 100. 
HABENARIA ( Hologlossa) LATILABRIS, Hook. f. 
5 Н. | latilabris; caule sepius elato, foliis sessilibus late obovato-v. elliptico-oblongis 
acuminatis, spica multiflora, bracteis herbaceis inferioribus floribus longioribus superioribus 
7 _ ovario eequilongis, floribus flavo-viridibus, sepalo dorsali late ovato orbiculari v. oblongo, 
_ lateralibus reflexis ovatis v. ovato-lanceolatis acutis, petalis polymorphis, labello sepalis 
m _ longiore. integro lineari-lanceolato v. oblongo lateribus reflexis, calcare ovario curvo 
= Uc ові ato multo longiore incurvo. Hook. f. Fl. Brit, Ind. vi. 153. Platanthera acuminata, 
