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Character/Data Set Information
Interactive key for the genera of Chinese Orchidaceae
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Character List
1: Habit [Unordered List]
- 3. semi-epiphytic herbs (6 taxa)
2: Rhizome [Unordered List]
- 1. retrose or transverse or creeping or ascending (32 taxa)
- 4. with fibrous roots (5 taxa)
3: Tuber [Unordered List]
4: Stem [Unordered List]
- 5. tufted or separate (6 taxa)
- 6. sheathing below middle (17 taxa)
- 7. sheathing above middle (8 taxa)
- 14. with scalelike sheath or roots (24 taxa)
5: Pseudobulb [Unordered List]
- 4. corm-shaped or subtuberous or tubular (6 taxa)
- 6. ovoid or elliptic or spindle-shaped or ovate or conical (13 taxa)
6: Leaf: characteristics [Unordered List]
- 5. plicate or plicate-venous (18 taxa)
- 7. sheathing or noding at base (66 taxa)
- 9. apex notched or acute or obtuse or hooked (20 taxa)
- 10. margin recurved or apex lobed (17 taxa)
7: Leaf: position [Unordered List]
- 2. opposite or subopposite (3 taxa)
8: Leaf: shape [Unordered List]
9: Inflorescence: type [Unordered List]
10: Inflorescence: position [Unordered List]
- 1. terminal or subterminal (73 taxa)
- 2. arising from leaf axil (12 taxa)
11: Floral bract [Unordered List]
- 5. pubescent or ciliate or notched at margin (3 taxa)
- 6. lanceolate or ovate (4 taxa)
12: Scape [Unordered List]
- 2. on pseudobulb apex (4 taxa)
- 3. arising laterally on pseudobulb or base of short stem or nodes of rhizome (17 taxa)
- 4. emerging from center of leaves or pseudobulb base or rhizome (10 taxa)
14: Inflorescence: other characteristics [Unordered List]
- 1. rachis pubescent or zigzagged flexuose or winged (7 taxa)
- 2. pedicel long or extremely short
- 8. peduncle and rachis with winged ribs or sheath (4 taxa)
16: Flower: other characteristics [Unordered List]
- 6. distichously arranged (2 taxa)
17: Sepal [Unordered List]
- 3. dorsal sepal connivent with petals forming a hood (21 taxa)
- 5. with petals connate into a tube (6 taxa)
- 6. lateral sepals adnate to column foot or labellum forming a mentum (28 taxa)
- 7. lateral sepals dilated or saccate at base or bent downward (8 taxa)
- 8. lateral sepals spreading or oblique or reflexed or connivent (37 taxa)
18: Petal [Unordered List]
- 1. shorter or smaller than sepals (31 taxa)
- 5. base connivent to sepals or with claw (9 taxa)
- 6. narrower than sepals or as long as dorsal sepal (45 taxa)
- 7. adnate to dorsal sepal forming a hood (4 taxa)
- 8. with dark fine spots or markings
- 9. spatulate or tapelike (2 taxa)
19: Labellum [Unordered List]
- 1. with sac or spur or auricles at base (87 taxa)
- 2. spherical or elliptic or clavate (3 taxa)
- 3. T-shaped or Y-shaped (2 taxa)
- 8. divided into epichil and hypochil (7 taxa)
- 12. with longitudinal ridges or keels (15 taxa)
- 13. pandurate or trumpet-shaped (4 taxa)
- 15. parallel to column (2 taxa)
- 17. with 2 poles near base (1 taxon)
20: Column [Unordered List]
- 1. with 3 fertile stamens (1 taxon)
- 2. with 2 fertile stamens (3 taxa)
- 3. with 1 staminode on top (2 taxa)
- 8. with wing or triangular-falcate or arm-shaped or subulate appendages (54 taxa)
- 12. without appendage (3 taxa)
- 13. puberulous or pubescent (3 taxa)
21: Anther [Unordered List]
- 5. with cucullate operculum
22: Stigma [Unordered List]
- 4. 3-lobed or 2-lobed (2 taxa)
- 7. linear or globose or subclavate (1 taxon)
23: Rostellum [Unordered List]
- 3. ligulate or ovate or U-shaped or deltoid (10 taxa)
- 4. spreading horizontally or suberect (3 taxa)
24: Operculum [Unordered List]
25: Pollinia: number [Unordered List]
26: Staminode [Unordered List]
27: Pollinia: shape [Unordered List]
- 1. subclavate or ovate (3 taxa)
28: Pollinia: other characteristics [Unordered List]
- 4. neither caudicle nor viscidium (20 taxa)
- 5. with caudicle or viscidium (111 taxa)
- 6. 2-lobed or 4-lobed (2 taxa)
29: Stipe: shape [Unordered List]
- 4. obovate or subobovate (2 taxa)
- 6. spatulate or subspatulate (3 taxa)
- 8. triangular or subtriangular (5 taxa)
30: Viscidium:shape [Unordered List]
- 2. orbicular or suborbicular (7 taxa)
- 8. triangular or subtriangular (2 taxa)
- 9. sandlelike or subreniform (2 taxa)
- 10. saddlelike or luniform (3 taxa)
31: Viscidium: other characteristics [Unordered List]
32: Fruit:type [Unordered List]
33: Fruit:shape [Unordered List]
34: Fruit: other characteristics [Unordered List]
- 1. longitudinally 3-ribbed (2 taxa)
- 2. pendulous or ascending (2 taxa)
- 4. with 3 or 6 ridges (4 taxa)
- 5. with persistent column (3 taxa)
35: Seed [Unordered List]
36: Google Image Search (http://images.google.com/images?q=) [Basic URL]
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