| 1 |
Calyx lobes ca. as long as tube or longer; bracts ovate to broadly ovate
|
(2)
|
| 1 + |
Calyx lobes shorter than tube; bracts narrowly ovate or narrowly triangular
|
(4)
|
| 2 (1) |
Terminal leaflet entire along margin, base rounded.
(10)
|
H. williamsii
|
| 2 (1) + |
Terminal leaflet slightly undulate or irregularly undulate along margin, base cuneate
|
(3)
|
| 3 (2) |
Leaflets caudate or caudate-acuminate at apex, irregularly undulate along margin; roots distinctly tuberous.
(8)
|
H. longipes
|
| 3 (2) + |
Leaflets shortly acuminate at apex, slightly undulate along margin; roots not tuberous.
(9)
|
H. repandum
|
| 4 (1) |
Leaves 5-7-foliolate.
(1)
|
H. oldhamii
|
| 4 (1) + |
Leaves entirely 3-foliolate
|
(5)
|
| 5 (4) |
Stems and leaves densely white strigose.
(6)
|
H. densum
|
| 5 (4) + |
Stems and leaves pubescent or glabrous
|
(6)
|
| 6 (5) |
Stems and leaves glabrous.
(3)
|
H. menglaense
|
| 6 (5) + |
Stems and leaves pubescent or subglabrous
|
(7)
|
| 7 (6) |
Wings and keel petals not clawed at base; stipules linear-lanceolate, 0.5-1 mm, broadest at base.
(7)
|
H. podocarpum
|
| 7 (6) + |
Wings and keel petals distinctly clawed at base; stipules triangular-lanceolate, lanceolate, or ovate-lanceolate, 2-4 mm, broadest at base
|
(8)
|
| 8 (7) |
Articles of legume obliquely triangular, 12-14 × 4-6 mm, stipe 10-12 mm; fruiting pedicel 11-13 mm.
(2)
|
H. leptopus
|
| 8 (7) + |
Articles of legume slightly broadly subobovate, (6-)9-10 × ca. 4 mm, stipe 4-10 mm; fruiting pedicel 4-10 mm
|
(9)
|
| 9 (8) |
Leaves often clustered at top of stem, terminal leaflet broadly ovate or ovate; legume articles 9-10 mm, stipe ca. 10 mm.
(4)
|
H. laxum
|
| 9 (8) + |
Leaves often scattered on stem, terminal leaflet lanceolate; legume articles 6-7 mm, stipe 4-6 mm.
(5)
|
H. laterale
|
KUN官网