Sarcantheae.

• Lip not spurred . Column without a foot , short, not winged.

49. LUISTA. Sepals and petals not spreading widely . Lip not jointed at the base, usually longer than the sepals . Stipes of the pollinia ovate, flat . Leaves terete; flowers in short spikes.

50. COTTONIA. Sepals spreading widely , broader than the petals . Lip not jointed at the base. Stipes of the pollinia long , narrow. Flowers in simple or branched ,very long peduncled racemes.

51. STAUROPSIS .Sepals and petals spreading widely. Lip not jointed at the base . Stipes of pollinia long, narrow. Flowers medium-sized , in simple or branched racemes.

52. ARACHNANTHE .Sepals and petals widely spreading . Lip jointed at the base, gibbous or shortly spurred. Stipes of the pollinia flat, acute from a broad base. Flowers large, loosely racemed.

** Lateral sepals adnate to the foot of the column, forming a mentum. Spur , if present ,distant from the baseof the lip , sometimes recurved and ascending .
53. PHALAENOPSIS. Lip spreading from the base or erect at the base , not spurred .Column erect , foot short. Stipes of the pollinia linear or spathulate. Flowers large, in simple or branched racemes.

54. DORTIS . Lip spreading from the base or erect at the base, not spurred . Column erect ,foot short. Stipes of the pollinia linear or spathulate. Flowers large, in simple or branched racemes.

55. RHYNCHOSTYLIS . Lip saccate at its union with the foot of the column, then narrowed , blade ovate or tongue –shaped. Column wingless , foot short. Stipes of the pollinia subfiliform. Flowers rather large, in long dense racemes.

56. SARCOCHILUS . Lip shortly incumbent or adnate to the base of the column, blade fleshy , top often inflexed , gibbous or shortly stoutly spurred . Stipes of the pollinia linear or oblong . Flowers usually small, in simple racemes.

57. TRICHOGLOTTIS . Lip with a long foot adnate to the base of the column. Flowers few, small.

58. AERIDES. Lip jointed on to the long foot of the column, blade with an ascending or recurved hollow spur. Stipes of the pollinia narrow. Flowers in simple or branched racemes.

59. RENANTHERA. Sepals and petals spreading widely ; lateral sepals usually the largest , parallel and placed under the small lip. Stipes of the pollinia flat, narrow . Racemes branched.

60. VANDA. Sepals and petals fleshy ,widely spreading from a narrow base. Stipes of pollinia broad. Flowers large, in simple racemes.

61. SACCOLABIUM. Sepals and petals widely spreading from a narrow base. Stipes of pollinia usually slender . Flowers small , in simple or branched racemes.

62. SCHOENORCHIS . Flowers of Saccolabium , but column with 2 erect linear appendages.

63. UNCIFERA. Sepals and petals erecto-patent . Spur of lip strongly incurved . Stipes of the pollinia with dilated sub-2-lobed tip. Flowers small , in dense-fld. Racemes.

64. ACAMPE. Sepals and petals thick , concave . Stipes of pollinia slender . Flowers small, crowded in a short rigid simple or branched peduncle.

65. SARCANTHUS . Sepals and petals fleshy, spreading . Spur of the lip internally divided longitudinally . Flowers small , in simple or panicled slender racemes.

66. CLEISOSTOMA. Spur of the lip almost closed with a callus or lamella. Flowers small , crowded in simple or branched racemes.

67. ORNITHOCHILUS. Sepals spreading ; lateral connate at the base of the claw of the lip , and together with it forming a mentum. Lip broadly 2-3 lobed , often Gmbriate. Stipes of the pollinia strap-shaped . Flowers small , in simple or branched slender racemes.

68. TAENIOPHYLLUM. Sepals connivent or subpatent , bases often connate . Pollinia 4, distinct ; stipes short . Dwarf herbs ,leafless or few-leaved ; flowers minute .

69. MICROSACCUS. Sepals and petals spreading . Pollinia 4, distinct ; stipes linear . Small herbs with many small distinchous leaves , and 1-2 minute flowers.

70. . DIPLOCENTRUM. Sepals and petals widely spreading . Lip 2-spurred towards the base .