72 CXXXIII. ORCHIDE (ROLFE). [ Lissochilus. 
Spur conical, 
Disc of lip three-keeled. 
Disc of lip without basal calli . . 38. L. roseus. 
Disc of lip with a pair of semicircular 
calli behind : ` ` . 39. L. Ephippilum. 
Disc of lip with a single dwarf callus 
behind. . - S ; . 40. L. Alexandri. 
Disc of lip five-keeled `. S . 41. L. Nyase. 
Spur inflated underneath near the base . 42. L. macranthus. 
Upper part of spur rather short and blunt, 
Keels of lip rather dwarf and entire. 
Petals 3-1 in. broad; front lobe of lip 
4-6 lin. broad . . 43 
Petals 1-14 in. broad ; front lobe of lip 8-9 
lin. Droad. . . . 44, 
Keels of lip elevated into tall oan lamelle, 
L, elatus. 
L 
Front lobe of lip longer than broad, subacute 45, L. Welwitschit. 
L 
L 
. giganteus. 
Front lobe of lip broader than long, obtuse. 
Disc of lip with five lamellæ . i , 46. 
Disc of lip with three lamellæ Al- 
** Front lobe of lip convex or with reflexed sides; petals 
usually bright yellow, sometimes marked with 
brown or red. 
Disc of lip with a SE of erect calli in front of the 
. Schweinfurthii. 
. Elliotii. 
spur . 48. L. congoensis. 
Disc of lip with a transv erse > membrane at the base 
of the front lobe . : . . 49, L. Frederici. 
Dise of lip smooth or longitudinally keeled. 
tSepals as long as the petals, or nearly so. 
Bracts broadly ovate and subobtuse S , 50. L. Oatesii. 
Bracts oblong or lanceolate and acute. 
Spur slender, acute . x 3 è . 51. L. malanganus. 
Spur rather stout, subobtuse. 
Spur straight, or nearly so. 
{Expanded flowers 1 in. or more diam. 
Spur 2 lin. long, nearly as long as 
the side lobes of the lip. 
Sepals about half as broad as long, 
Spur tapering almost to the 
apex. 
Petals rhomboid-ovate (West- 
ern or central species), 
Side lobes of lip broadly 
oblong or snborbicular- 
oblong 
Side lobes of lip ligulate 
Petals ovate (Eastern species) 
Spur stout to near the apex. 
Sepals more than half as broad as 
long . 
Spur about Lë lin. long, half to a 
third as long as the side lobes. 
Expanded flowers 14 in, diam. 
Disc of lip three-keeled to near 
the apex z e . 57. L. Erythree. 
L, paiveanus, 
L. renschianus. 
L. papilionaceus, 
L. Carsoni. 
OU or Or Or 
# 
E 
i 
D 
56. L. Grantiz. 
