rhombilabia Garay 
Deiregyne tenella (L.O.Wms.) Garay, comb. nov. 
Basionym: Spiranthes tenella L.O.Wms. in Bot. Mus. Leafl. 12: 253; 
1946 
Thelymitra (Rchb.f.) Schltr. = Gularia trilineata (Lindl.) Garay 
trilineata (Lindl.) Schltr. = Gularia trilineata (Lindl.) Garay 
Deiregyne velata (Robins. & Fern.) Garay, comb. nov. 
Basionym: Spiranthes velata Robins. & Fern. in Proc. Amer. Acad. Sci. 
30: 122, 1894 
Dichromanthus Garay, gen. nov. 
Etymology: Prefix di- = two, chroma = color and anthos = 
flower, signifying the nature of the flowers. 
Sepala similia, conniventia, apicibus patentibus; sepalum pos- 
ticum columna dorsaliter adnatum, basi decurrenti: sepala late- 
ralia tantum pedem columnae adnata. Petala margine interiore 
sepalo intermedio agglutinata, sinuosa, basi decurrentia. Label- 
lum sessile, basi canaliculato-conduplicatum, marginibus cal- 
loso-incrassatis, naviculare, laminae margines in medio utrinque 
lateribus columnae agglutinatae. Columna brevis, erecta, pede 
decurrenti, facie puberula; stigmata 2, confluentia, apice biloba; 
rostellum tenue, erectum, lineari-oblongum, apice rotunda. 
Anthera ovato-cucullata, acuta; pollinia clavata, viscidio elon- 
gato, oblongo-lineari affixa. Ovarium subcylindrico-fusiforme, 
paululum tortum. 
Plantae terrestres, validae, erectae, sub anthesin vulgo folio- 
sae; radicibus fasciculatis, stipitato-fusiformibus, carnosis: foliis 
paucis, vaginatis, precipue caulinis in parte inferiori caulium: 
caulibus erectis, supra vaginato-bracteolatis, spicis conicis vel 
cylindraeceis, dense multifloris; floribus magnis, speciosis bico- 
loribus, erectis, quaquaversalis. 
Sepals similar, connivent, with flared apices; dorsal sepal 
adnate to column dorsally and decurrent on ovary; lateral sepals 
adnate only to column-foot. Petals sinuous, decurrent on 
column-foot. Lip sessile, conduplicate-channelled at base with 
thickened margins, lamina navicular with the sides in middle 
agglutinate with column. Column rather short, erect with a de- 
current foot, pubescent in front; stigmata 2, confluent, bilobed 
at apex; rostellum soft, erect, linear-oblong, rounded at apex. 
313 
