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Interactive Key for genera of Chinese Gymnosperms         Search

Interactive key for the Genera of Chinese Gymnosperms (by Xiangying Wen)

1: Habit [Unordered List]

• 1. tree   (36 taxa)
• 2. shrub   (12 taxa)
• 3. subshrub   (1 taxon)
• 4. herb   (1 taxon)
• 5. vine   (1 taxon)
• 6. semievergreen   (2 taxa)
• 7. evergreen   (28 taxa)
• 8. deciduous   (5 taxa)

• 1. monoecious   (22 taxa)
• 2. dioecious   (14 taxa)

• 1. erect   (1 taxon)
• 2. much branched   (2 taxa)
• 3. with swollen nodes   (1 taxon)

• 1. arranged in a plane   (4 taxa)
• 2. spreading or ascending or drooping   (3 taxa)
• 3. decussately arranged   (1 taxon)
• 4. prominently jointed   (2 taxa)
• 5. opposite   (3 taxa)
• 6. irregularly alternate
• 7. subopposite or subwhorled   (3 taxa)
• 8. base with leaf scars or bud scales   (8 taxa)
• 10. dimorphic (long and short branchlets)   (4 taxa)
• 11. longitudinally grooved   (2 taxa)
• 12. whorled   (1 taxon)

• 1. whorled   (7 taxa)
• 2. irregularly whorled   (6 taxa)
• 3. irregularly vertical   (1 taxon)
• 4. with orbicular scars of deciduous branchlets   (1 taxon)
• 5. spreading or trooping   (4 taxa)

• 1. with reddish brown to dark gray bark   (1 taxon)
• 2. with pyramidal or ovoid or columnar crown   (1 taxon)
• 3. with sessile or subsessile leaves   (1 taxon)
• 4. with leafy branchlets   (1 taxon)
• 5. with inflexed and coiled new leaves   (1 taxon)
• 6. with twisted leaf bases   (6 taxa)
• 7. with keeled lateral leaf surfaces   (2 taxa)
• 8. with trimorphic leaves   (2 taxa)
• 9. with 2-lobed or notched leaf apex   (1 taxon)
• 10. with cymes   (1 taxon)
• 11. cauliflorous   (1 taxon)
• 12. with an abaxial resin gland   (2 taxa)
• 13. with monopodial trunk   (2 taxa)
• 14. both sides of leaves with deep furrow   (1 taxon)

• 1. spirally arranged   (23 taxa)
• 2. opposite   (5 taxa)
• 3. alternate   (2 taxa)
• 4. whorled   (1 taxon)
• 5. 2-ranked   (9 taxa)
• 6. 4-ranked   (2 taxa)
• 7. 5-ranked   (1 taxon)
• 8. decussate   (10 taxa)
• 10. radially spreading   (9 taxa)
• 11. pectinately arranged   (3 taxa)
• 12. clustered   (3 taxa)

• 1. needle-like   (8 taxa)
• 2. broadly ovate   (2 taxa)
• 3. triangular   (1 taxon)
• 4. linear or lanceolate   (17 taxa)
• 5. linear-lanceolate   (3 taxa)
• 6. scale-like   (13 taxa)
• 7. flattened   (10 taxa)
• 8. boat- shaped   (3 taxa)
• 9. ovate or rhombic-ovate   (2 taxa)
• 10. fasciculate   (1 taxon)
• 11. oblanceolate-linear   (2 taxa)
• 12. falcate   (4 taxa)
• 13. pinnately compound   (1 taxon)
• 14. subulate   (1 taxon)
• 15. base reduced to sheaths   (1 taxon)
• 16. S-shaped-ovate   (1 taxon)

• 1. pinkish or reddish when young   (1 taxon)

• 1. leathery   (1 taxon)

• 1. parallel   (2 taxa)
• 2. pinnately   (1 taxon)

• 1. entire   (4 taxa)
• 2. downcurved   (1 taxon)
• 3. serrulate   (1 taxon)

• 1. flattened   (1 taxon)
• 2. spinny   (1 taxon)
• 3. basal swollen   (1 taxon)
• 4. hairy   (1 taxon)
• 5. base twisted

• 1. axillary   (10 taxa)
• 2. terminal   (12 taxa)
• 3. lateral   (2 taxa)
• 4. clustered   (5 taxa)
• 5. pendulous   (2 taxa)
• 6. solitary   (13 taxa)

• 1. cylindric   (6 taxa)
• 2. ovoid   (5 taxa)
• 3. ellipsoid   (5 taxa)
• 4. capitula   (1 taxon)
• 5. oblong   (4 taxa)
• 6. fusiform   (1 taxon)
• 7. catkinlike   (2 taxa)
• 8. globose   (2 taxa)
• 10. spikes or panicles   (2 taxa)

• 1. shield-shaped   (3 taxa)
• 2. densely arranged   (1 taxon)
• 3. with pendulous pollen sacs   (1 taxon)
• 4. scale-like   (2 taxa)
• 5. spirally arranged   (6 taxa)
• 6. decussate   (1 taxon)

• 1. spikelike   (1 taxon)
• 2. ovoid   (1 taxon)
• 3. ellipsoid   (1 taxon)

• 1. terminal   (2 taxa)
• 2. axillary   (1 taxon)
• 3. solitary   (1 taxon)

• 1. axillary   (6 taxa)
• 2. terminal   (19 taxa)
• 3. opposite   (1 taxon)
• 4. whorled   (1 taxon)
• 5. solitary   (13 taxa)
• 6. pendulous   (6 taxa)
• 7. aggregate   (1 taxon)

• 1. globose   (8 taxa)
• 2. ovoid   (7 taxa)
• 3. ellipsoid   (3 taxa)
• 4. oblong   (3 taxa)
• 5. ellipsoid-cylindric   (1 taxon)
• 6. conical-cylindric   (1 taxon)
• 8. rosettelike   (1 taxon)
• 9. cylindric   (2 taxa)
• 10. pyriform   (1 taxon)

• 1. margin ridged   (1 taxon)
• 2. apex reflexed or upcurved or cuspidate   (4 taxa)
• 3. apex pointed   (2 taxa)
• 4. decussate   (6 taxa)
• 5. basal bracts fused to form a succulent and warty receptacle   (2 taxa)
• 7. triangular   (2 taxa)
• 8. peltate   (1 taxon)
• 9. rhombic   (1 taxon)
• 10. oblong   (1 taxon)
• 11. obcordate   (1 taxon)
• 12. obovate   (1 taxon)
• 13. spatulate   (2 taxa)
• 14. ligulate-spatulate   (1 taxon)
• 15. 3-lobed   (2 taxa)

• 1. overlapping   (1 taxon)
• 2. reniform   (1 taxon)
• 3. trapeziform   (1 taxon)
• 4. flabellate   (1 taxon)
• 5. adnate with bracts in basal   (3 taxa)
• 6. detached in apical part   (1 taxon)
• 7. decussate   (4 taxa)
• 8. peltate   (2 taxa)
• 9. suborbicular   (1 taxon)
• 10. shield-shaped   (5 taxa)
• 11. cuneate   (2 taxa)
• 12. connate with bracts   (3 taxa)
• 13. 3-lobed   (1 taxon)

• 1. 1   (4 taxa)
• 2. 2   (7 taxa)
• 3. 3   (6 taxa)
• 4. 4   (4 taxa)
• 5. 5   (7 taxa)
• 6. 6   (5 taxa)
• 7. >6   (4 taxa)

• 1. drupelike   (6 taxa)
• 2. ovoid   (7 taxa)
• 3. ellipsoid   (3 taxa)
• 4. globose   (1 taxon)
• 5. irregularly triquetrous
• 6. compressed-obovoid   (1 taxon)
• 7. irregularly compressed-ellipsoid   (1 taxon)
• 8. nutlike   (2 taxa)
• 9. obovoid   (1 taxon)
• 10. cuneate-oblong   (1 taxon)

• 1. with 1 lateral wing   (2 taxa)
• 2. with 2 lateral wings   (7 taxa)
• 3. with 2 subapical or apical wings   (2 taxa)
• 4. with unequal wing   (5 taxa)
• 5. wingless   (4 taxa)
• 6. with umbilicus   (1 taxon)
• 7. connate with bracts   (1 taxon)
• 8. apex mucronate   (5 taxa)
• 9. ridged   (1 taxon)
• 10. notched   (1 taxon)
• 11. keeled   (1 taxon)
• 13. with backward projecting wing   (1 taxon)

• 1. 2   (23 taxa)
• 2. 3   (9 taxa)
• 3. 4   (13 taxa)
• 4. 5   (10 taxa)
• 5. 6   (9 taxa)
• 6. 7-10   (8 taxa)
• 7. >10   (3 taxa)

• 1. epigeal   (18 taxa)
• 2. hypogeal   (5 taxa)