OECHIDS OF THE SIKKIM-HI MALAYA.
Terrestrial ; pseudobulbs with a ]ong luafy pseudostem ; leaves 3 to 5, sessile,
membranous, plicate; infloresoenoe lateral, raceme branched; lip without
side lobes or lamellre, convolute ; column long with no foot ; pollinia
*Polliuia 2—
Torresti'ial, pseudobulbous from a short rhizome; leaves solitary, membranous,
plicate, petiolei; inflorescence a racemose scape; lip lamellate;
column long, with or witho^it foot-
Column with a deep sac or spur at its base and winged, with no foot;
lip with side lobes; pollinia trapeziform; anther with a
apioulus; pollinia quite :
Column not saccate, wingless, foot long; Hp without i
elliptic, attached to a small translucent mass .
i lobes; pollinia
9. Chrysoyksmim.
. 10. Bigiyphoia.
1. Oberonia, Liudl
Epiphytes witii usually veiy short, oftan tufted, stems. Lema coriaceous or fleshy,
usually easiform (rarely terete), always distichous aud equitaiit. Flotoers minute, numerous,
sometimes whorled, arranged in a long, erect or deflexed, spike-like or racemelike
inflorescence, but expanding centrifagally. Sepals sub-equal, ov^ate or oblong.
Petals as wide as or narrower than the sepals. Lip larger than the sepals, sessile,
rarely entire, usually lobed and often erose-lobular, the hypoohiJe more or less concave
or with a nectar-secrcting pit near its base. Column very short, stout, rarely winged.
Anilier terminal, incumbent; pollinia 4, cohering in pairs. A genus of about 60
species distributed in the Indo-Malayan region, but extending also to Australia and
the islands of the Pacific.
lioTE.—In none of tlae liriag spodmcna of Oberonia wkick we liivo esamiDod arc the pairs of pollinia connected
in any way with the rosteUiun. Tlio rostellum lias, liowerer, at its extremity a minate globule o£ transparent viscid
matter, and immediately above this lie the attenuated ends of the pollen masses So closely do these approsimate
to each other that contact between thom may be caused by the sliglitost movement of an insect in the neighbourhood,
or even by the wind. Contact is probably also caused as the anther shrivels and the pollinia thns get displaced from
their natural bod on the clinandriam. In dried spesLmens o£ Oheronia the pollinia are almost invariably attached to
this rostellar viseus, and it is this circumstance which has probably given rise to the belief that they were
originally connected in'tho hving state by a viscus of their own.
• Lip witbont lateral lobes or basal auricles.
Lip coarsely erose from base to apex; rachis of inflorescence slender,
Apex of lip not lobulate; petals spreading, erose-dentate . . . 1.0^ Prainiana.
Apex with two short lobules separated by a rather wide sinus;
petals reflescd, entire 0. ¡obulata.
l i p qioite entire or very slightly erose at the apex only; petals entire,
axis fleshy S. 0. pachyrachis.
' Lip with narrow lateral lobes; terminal lobe not elongate.
Axis of the raceme fleshy.
Lateral lobes of Hp dentate; terminal lobe rounded, entire . O. pacliyphylla.
OBEEOiS"IA.
Axis of the raceme not fleshy.
Lateral lobes of lip quite entire ; terminal lobe large with lobulateerose
edges and a slightly biSd apex; sepals and petals spreading. 5. 0. emarginata.
Lateral lobes sub-entire, concave ; terminal lobe crose-dentate, its
apex minutely mucronate; petals reflexed 6. 0. micraniha.
Lateral lobes erose.dentate; terminal lobe with two blunt slightly
incurved apical lobules separated by a E
' L i p broad, rounded or oblong in general outline; the side lobes large
Lateral lobes pectinate, glabrous.
Terminal lobe entire except for a slight erosion at the apex
Terminal lobe coarsely erose-dentate
Lateral lobes entire, clothed with stiff hairs and separated from the
biSd hairy apical lobe by a smooth mesochile
r. 0. Crofliana.
S. 0. Jenkinaiana.
9. 0. iridifoUa.
i n . 0. emiforn.
0. demUsn.
0. obcordata.
* Lip with distinctly projecting lateral or basal lobes, their apicea directed
either outwards or forwards (towards the apes), or upwards and backwards.
Lateral lobes directed forwai'da.
Lateral lobes oblong, blunt.
Lateral lobes orose-dentate; terminal lobe emarginate, erose . 11.
Lateral lobes entire; terminal lobe obcordate
Lateral lobes sub-crenulato; terminal lobe deeply cleft into
two broadly oblong blunt lobes; surface of the lip blistered
or scaly 13. 0. myriantha.
' Lateral lobes falcate, their apices aoute and directed forwards.
Terminal lobe with falcate parallel lobules; petals truncate . llf, 0. parvula.
Terminal lobe with oaudate-aouminate straight parallel lobules;
petals acute 15. 0. eaidesce/is.
Lateral lobes directed horizontally outwards, small and conical;
terminal lobe with rather falcate but short divergent lobules;
petals blunt 1&. 0. falaata.
Lateral lobes long and filiform, curved upwards and backwards;
terminal lobe with lanceolate elongate parallel lobules, the
whole surface of the lip scabenilous 17. 0. rufihhris,
' " L i p lobed only at the apes; its base broad and sometimes sub-truncate
with a small auricle at each extremity; the apex with two long
falcate lobules sepaiated by a deep sinus.
Petals spreading; stems elongate.
Petals linear-oblong, truncate, entire, sepals spreading . 0. longilabris..
Petals oblong, erose, spreading; lateral sepals reflexed . 19. 0. auriculata.
Petals reflexed; stem very short SO. 0. pyruli/era.
1. OBERONIA PRAINIANA, King and Pantling in Journ. As. Soc. Bengal,
LXIV, pi. 2, p. 33L
Siem very short; leaves very fleshy, oblong, slightly falcate, sub-acute, '5 to
'8 in. long and '15 to '25 in. broad. Spike slender, erect, many times longer tbaii
the leaves; the peduncle sparsely bracteate, twice as long as the uppermost leaf towiiich
it is adnate; the rachis much longer than the peduncle, rather denselyÀNK.
BOY. Box. GARD. OALCU'IRA, VOL. YIIL