164 ORCHIDS OP THE SIKKIM-HIMALAVA.
curved at the base. Column short, dilated tow.rds the bifid apex, tho foot narrow and
v e r y siiort. Rostollum eniarginate. PolUnia 8, yellow, oblong, in groups of four attnched
t o a very large sagittately lobed gland. Capsuk ellipsoid, -25 in. locg. Reichb. fil. in
Gard. Chron., 1882, I, 733; Hook. fil. Fl. Br. Ind. V, 827.
Sikkiui, at elevations of 5,000 to 7,000 feet; ssTeral collectors; Pantling, No. 86; in
flower during May and June. Bbotan; GrifTith (Kew Distrib. Nos. 5228, 5229, 5229-1).
K a g a Hills; at Kohima, Clarke.
TLATE 221,—Crr/pioo/-i¿us lútea, "Wall. A plant; nf naUral sise. Fig. 1 ficwer, 2 petals, 3 side
view ot OTary, column with, its foot and Hp, 4 lip, 5 front view of column, stigma, anther, 6 anther,
7 pollinia and gland; all eniai-ffed.
3 2 . Calanthe, Lindl.
T e r r e s t r i a l , usually pseudo-bulbous. Pseiido-stems variable in length, often tall,
sometimes absent. Leaves membranous, more or less elliptic-oblong, plaited. Inflorescence
u s u a l l y from amongst the leaves and axillary, or from the side of the stem or p.seudobulb.
Floiaers usually rather large, sometimes inconspicuous, in erect racemes. Sepals
sub-equal, usually spreading, more or less lanceolate or oblong, rarely connivent. Petals
u s u a l l y narrower than the sepals. Lip variously attached to tbe column either to its
base or to its whole length, usually 3-lobed, the apical lobe often bifid, the disc usually
lamellate. Column short, somotimes dilated at the base or apex. Author usually conical,
•with an acuminate lip, 2-cclled. Pollinia 8, waxy, clavate or elliptic, often unequal,
c o h e r i n g in fours to a granular caudicle, or the whole eight inserted on a single caudicle
a n d attached to a gland. Capsules ellipsoid, drooping. Distrib. About 80 species ;
t r o p i c a l or sub-tropical.
I n this genus the iníloresoence is produaed on an undeveloped psoudo bulb which also bears the
young leaves. The latter (except ia C. olümmfclia, C. eiensiñora, and G. gracilh), do not obtain their
lull size or develope their petioles until after flowering has ceased.
'hiflorescnce on the sume stem as the learn.
Flower without a spur.
Psoudo-bulbs none, stems thin, cj'lindric, flowers white, inflorescence lateral . 1. C. gracilis.
Tsendo-bulbs not more tliau 1 in. long.
Leaves 2 or 3, sub-e^ual; flowers green, edged with white outside;
lip with short basal lobes and a small bilobed pubeiulous callus
between them; apical lobe with a large fleshy 3-ridged earuuole . 2. C. tricarinata.
Leaves 5 to 7, very unequal, the lower reduced to sheaths; flowers
lavender-coloured, lip with elongate basal lobes and two short calli
on the diso between them; apical lobe without a callus . . . 3. 0. puber\tla.
Flower with a very short straight conical spur.
Pseudo-bnibs short.
Lip attached to the whole length of the column.
Flowers '2 in, in diam.; sepals and petals brownish; lip with lateral
i . C. Mannii.
Flowers 1 in. in diata.; sepals and petals brown with marginal
green lines; lip clawed, trowel-shaped, white, without lateral lobes 5. 0. truHi/ormii.
Lip attached to the column for half its length, 3-lobed, basal lobes
diverging ; apical lobe sub-obovate, with broad oraarginate apes aud
irregularly toothed edges; tiowers dull purple 6. C. breticornu.
CALAXTHE. '
Pseudo-bulbs 6 to 9 in. long, eyiindrio, stem-like, the jediinele and raceme
equally long; lip -nithout distinct lateral lobes, its terminal lobe
large and divided into two diverging lobules ; flowers j ellow and
violet, inflorescence lateral 7, C. Uluba.
Spur more than half as long as the ovsry (quite as long in 0. hcrbacsa.)
Lip without laternl lobes, its edges deeply inciscd-pectinate . 8. C. alpina.
Lip 3.Iobed.
Lateral lobes of lip oblong-oblanceolate, entirely incumbent on the
terminal; lip with a large lobulate callus at its base, the apical
lobe with large wide lobules 9. C. aliimafoHa.
Lateral lobes of the lip incumbent on tho apical lobe by their tips
only.
Eaceme with about 20 flowers, floral bract as long as the stalked
oTary; the lip with a carunculate callus at its base, its
apical lobules broad, sub-obovate and diverging 10. O, angmta.
Eaceme with about 16 flowers; floral bract very short (-25 in.
long), lip with a didymous callus at its base ; its apical lobules
broad, rounded, not diverging, spur half as long as the stalked
ovary 11. C. ehloriikuea.
Lateral lobes of the lip spreading outwards, not incumbent on the
apical one ; raceme with about 15 flowers, floral bract half as
long as the spur and as loug as tho stalked ovary; lip with
carunculate callus at its base, its apical lobules narrowly oblong,
sub-falcate, diverging IS. C. lerhaeea.
Spur longer than the stalked ovoiy.
Lip 3-lobed ; flowers violet, sepals and petals spreading , . . . 13. C. Mai-uca.
Lip without basal or lateral lobes; flowers yellow ; sepals and petals
more or less xeflexed Ik- C. WhUeana.
Infioracenca dütinct from the leafy stem and rhing dirocf from the r/iizoiiie;
Jioiccrs yelloic 15. C, densiflora.
1. CALASTHE GEACILIS, Lindl. in Wall. Cat., 73-41; Gen. and Spce. Orcli., 251.
Stems tliiu, cylinda-ie, slightly swollen at the base, annular below and with a few
tubular sheaths above. Leaves 5 t o 8, elliptic or elliptic-oblong, shortly caudate-acuminate,
naiTowed towards the broad sheathing base, 3 to 4'5 in. long and 1-25 to 1-75 in. broad.
Peduncles ono to three, issuing singly from nodes near the middle or lower part of
t b e stem, G t o 9 in. long, with many tubular sheaths at the base, a long one about the
middle, and at the apex a sparse raceme 4 to 6 in. long, both finely pubescent. Flowers
•75 iu. across, spurless ; Iract lanceolate, acuminate, longer than the pubescent slenderly
stallced ovary, caducous. Sepals equal, spreading, lanceolate, acuminate. Petals shorter
t h a n the sepals, obovate, acute, erose. Lip shorter than tho sepals, adnate to the baso
o n l y of the colimm; concave at tho base and with large triangular erect side lobes with
theii" anterior margins broad and erose; tho apical lobo small, transversely oblong,
deeply emarginate at the apex, the edges mucli undulate and coarsely erose; the upper
surface with two lamella; from tho base nearly to tho apex, the disc between tho lamellaj
w i t h a granular callus at its base and with small nodules scattered over the rest of
i t s area. Cohmn short, dilated at the base; the apex with a tuft o£ hair behind tho
li: