| 1 |
Stigma penicillate |
|
(2) |
| + |
Stigma not penicillate |
|
(4) |
| |
|
|
|
| 2 (1) |
Leaf imparipinnate, rachis neither indurated nor spiny (Illustration) |
|
Astragalus trichocarpus |
| + |
Leaf paripinnate, rachis indurated, spiny |
|
(3) |
| |
|
|
|
| 3 (2) |
Inflorescence, very elongated, lax, peduncle
15 cm or more long |
|
Astragalus koschukensis |
| + |
Inflorescence generally not elongated, peduncle
2.5 cm or less long (Illustration) |
|
Astragalus stocksii |
| |
|
|
|
| 4 (1) |
Stipules united at the base, encircling the stem |
|
(5) |
| + |
Stipules free lateral or adnate, not encircling the
stem |
|
(7) |
| |
|
|
|
| 5 (4) |
Flowers hanging downwards in the inflorescence, peduncle more than 10 cm long |
|
Astragalus peduncularis |
| + |
Flowers not hanging downwards in the inflorescence, peduncle less than 10 cm long |
|
(6) |
| |
|
|
|
| 6 (5) |
Inflorescence compact, leaflets 5-15 per leaf, c. 2-6 mm long (Illustration) |
|
Astragalus laspurensis |
| + |
Inflorescence lax, leaflets 3-5 per leaf, c. 7-25
mm long (Illustration) |
|
Astragalus squarrosus |
| |
|
|
|
| 7 (4) |
Aerial stem almost absent, stipules longer than the internodes |
|
(8) |
| + |
Aerial stem elongated, stipules shorter than the
internodes |
|
(15) |
| |
|
|
|
| 8 (7) |
Maximum number of leaflets per leaf per plant 5-9 (c.5 mm or less broad) |
|
(9) |
| + |
Maximum number or leaflets per leaf per plant more than 9 |
|
(11) |
| |
|
|
|
| 9 (8) |
Calyx with black and white vertical lines, peduncle c. 5 cm or less long |
|
(10) |
| + |
Calyx without black and white vertical lines, peduncle more than 10 cm (11-40 cm) long (Illustration) |
|
Astragalus droshensis |
| |
|
|
|
| 10 (9) |
Ovary pubescent, lower calyx teeth c. 1-1.5 mm |
|
Astragalus patuli-pilosus |
| + |
Ovary glabrous, lower calyx teeth c. 3-3.5 mm long |
|
Astragalus khalifatensis |
| |
|
|
|
| 11 (8) |
Fruit bladdery, inflated, ovoid, spherical, c. 10. mm broad |
|
Astragalus skorniakovii |
| + |
Fruit not inflated, 5 mm or less broad |
|
(12) |
| |
|
|
|
| 12 (11) |
Fruit arcuate, c. 5 mm broad |
|
Astragalus holdichianus |
| + |
Fruit c. 4.5 mm or less broad |
|
(13) |
| |
|
|
|
| 13 (12) |
Calyx teeth less than 4 mm long |
|
(14) |
| + |
Calyx teeth c. 4-6 mm long (Illustration) |
|
Astragalus sykesiae |
| |
|
|
|
| 14 (13) |
Calyx teeth 2-3 mm long, leaflets orbicular-oblong, obovate, obtuse |
|
Astragalus brahuicus* |
| + |
Calyx teeth 3-3.5 mm long, leaflets elliptic-obovate, acute |
|
Astragalus mangeri |
| |
|
|
|
| 15 (7) |
Calyx 2-4 mm long |
|
(16) |
| + |
Calyx more than 4 mm long |
|
(17) |
| |
|
|
|
| 16 (15) |
Fruit arcuate (Illustration), more than 1.5 cm long |
|
Astragalus hamosus |
| + |
Fruit not arcuate, inflated, 6-10 mm long |
|
Astragalus fatmensis |
| |
|
|
|
| 17 (15) |
Calyx hairs spreading |
|
(18) |
| + |
Calyx hairs appressed |
|
(19) |
| |
|
|
|
| 18 (17) |
Ovary glabrous (calyx with black and white vertical lines) (Illustration) |
|
Astragalus khalifatensis |
| + |
Ovary pubescent (foliar hairs spreading) |
|
Astragalus harsukhianus |
| |
|
|
|
| 19 (17) |
Raceme condensed, capitate |
|
Astragalus alitschuri |
| + |
Raceme lax, elongated |
|
(20) |
| |
|
|
|
| 20 (19) |
Calyx less than 1 cm long |
|
(21) |
| + |
Calyx more than 1 cm long |
|
(22) |
| |
|
|
|
| 21 (20) |
Calyx c. 5-7 mm long |
|
Astragalus imitensis |
| + |
Calyx c. 8-9 mm long |
|
Astragalus sp._B |
| |
|
|
|
| 22 (20) |
Leaflets elliptic |
|
(23) |
| + |
Leaflets filiform, linear |
|
Astragalus subuliformis |
| |
|
|
|
| 23 (22) |
Calyx cup 7.5-8.0 mm long, teeth 6.0-6.5 mm long (Illustration) |
|
Astragalus droshensis |
| + |
Calyx cup c. 12-16 mm long, teeth c. 3-4 mm long |
|
Astragalus xanthoxiphidiopsis |
