| 1 |
Leaf, bracts and calyx glandular |
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(2) |
| + |
Leaf, bracts and calyx eglandular |
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(3) |
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| 2 (1) |
Fruit glabrous to subglabrous, glands prominent |
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Oxytropis microphylla |
| + |
Fruit uniformly hairy, glands almost obscure |
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Oxytropis chiliophylla |
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| 3 (1) |
Fruit membranous, inflated |
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(4) |
| + |
Fruit not as above |
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(6) |
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| 4 (3) |
Fruit c. 12-14 mm wide (in pressed condition), mucro of the keel c. 3 mm long |
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Oxytropis platonychia |
| + |
Fruit c. 10 mm or less wide, mucro of the keel c. 2 mm or less |
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(5) |
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| 5 (4) |
Mucro of the keel than or equal to 1 mm |
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Oxytropis tatarica |
| + |
Mucro of the keel more than 1 mm long (up to c. 2 mm) |
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Oxytropis cachemiriana |
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| 6 (3) |
Aerial stem elongated |
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(7) |
| + |
Aerial stem not elongated |
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(9) |
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| 7 (6) |
Stipules united at the base, leaf opposed, inflorescence globose, at least when young |
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(8) |
| + |
Stipules free lateral, inflorescence elongated, not globose |
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Oxytropis glabra |
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| 8 (7) |
Subtending leaf longer or only slightly shorter than the inflorescence, lateral calyx teeth c. 1.5-2 mm long |
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Oxytropis hypoglottoides |
| + |
Subtending leaf much shorter than the inflorescence, lateral calyx teeth c. 3 mm long |
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Oxytropis lapponica |
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| 9 (6) |
Leaflets verticillate (at least at some points along the rachis) |
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(10) |
| + |
Leaflets not verticillate |
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(12) |
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| 10 (9) |
Calyx teeth shorter than the tube |
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Oxytropis staintoniana |
| + |
Calyx teeth longer than the tube |
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(11) |
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| 11 (10) |
Leaflets 30-40 per leaf, densely hairy |
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Oxytropis chitralensis |
| + |
Leaflets 9-12 per leaf, sparsely hairy |
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Oxytropis birirensis |
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| 12 (9) |
Fruit sessile |
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(13) |
| + |
Fruit stipitate |
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(16) |
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| 13 (12) |
Mucro of the keel c. 2-2.5 mm long |
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(14) |
| + |
Mucro of the keel 1 mm long |
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(15) |
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| 14 (13) |
Calyx c. 15-16 mm long, teeth c. 9 mm long, vexillum c. 13-14 mm long, plant villous, hairs spreading |
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Oxytropis sikaramensis |
| + |
Calyx c. 13 mm long, teeth c. 4 mm long, vexillum c. 21 mm long, plant velvety brownish |
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Oxytropis stracheyana |
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| 15 (13) |
Vexillum c. 9 mm long, branches spreading flexuous |
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Oxytropis savellanica |
| + |
Vexillum c. 7 mm or less, branches not flexuous, woody |
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Oxytropis densa |
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| 16 (12) |
Calyx teeth c. 6-8 mm long |
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Oxytropis gloriosa |
| + |
Calyx teeth up to 5 mm long |
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(17) |
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| 17 (16) |
Calyx c. 4 mm long (teeth c. 2 mm), vexillum c. 6-7 mm long |
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Oxytropis crassiuscula |
| + |
Calyx more than 4 mm long, vexillum 9 mm or more long |
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(18) |
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| 18 (17) |
Calyx teeth equal to calyx cup (mucro of the keel c. 2.5 mm long) |
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Oxytropis luteo-caerulea |
| + |
Calyx teeth smaller the cup |
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(19) |
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| 19 (18) |
Calyx teeth up to 2 mm long, cup c. 3.5-4 mm long (mucro less than 1 mm long) |
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(21) |
| + |
Calyx teeth c. 2.5 mm or more |
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(20) |
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| 20 (19) |
Leaflets more than 7 mm long and mostly more than 2.5 mm broad |
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Oxytropis mollis |
| + |
Leaflets 7 mm or less long, mostly c. 2.5 mm or less broad |
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Oxytropis humifusa |
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| 21 (19) |
Stipules uniformly pubescent outside; petiole up to 4.5 cm; leaflets 4-10 mm long, c. 1-4 mm broad; peduncle c. 2.5-30 cm long |
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Oxytropis immersa var. jinaliensis |
| + |
Stipules whitish papery, glabrous or scantily pubescent; petiole c. 5-12 mm long; leaflets c. 2-6 mm long, less than 1-2 mm broad; peduncle up to 6.5 cm long |
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Oxytropis immersa var. immersa |
