1 |
Aerial stem elongated, internodes longer than the stipules |
|
(2) |
+ |
Aerial stem not elongated, internodes shorter than the stipules |
|
(16) |
|
|
|
|
2 (1) |
Fruit unilocular |
|
(3) |
+ |
Fruit partly or completely bilocular |
|
(5) |
|
|
|
|
3 (2) |
Wing shorter than the keel |
|
Astragalus tribulifolius |
+ |
Wing equal to or longer than the keel |
|
(4) |
|
|
|
|
4 (3) |
Claw of the keel more than half the blade (claw c.4-5 mm; blade c. 5-6 mm long) |
|
Astragalus hendersonii |
+ |
Claw of the keel less half the blade |
|
Astragalus heydei |
|
|
|
|
5 (2) |
Fruit sessile |
|
(6) |
+ |
Fruit stipitate |
|
(9) |
|
|
|
|
6 (5) |
Fruit rostrate, valve only slightly pushed inward,
10-12-seeded (Fig.) |
|
Astragalus amherstianus |
+ |
Fruit not rostrate, partially bilocular, more than
20-seeded |
|
(7) |
|
|
|
|
7 (6) |
Fruit with only 1 type of hair |
|
(8) |
+ |
Fruit with 2 type of hairs (appressed and erect)(Fig.) |
|
Astragalus bakaliensis |
|
|
|
|
8 (7) |
Fruit hairs long and spreading |
|
Astragalus eremophilus var. eremophilus |
+ |
Fruit hairs short, appressed |
|
Astragalus eremophilus var. falcinellus |
|
|
|
|
9 (5) |
Stipe of the fruit longer than the calyx |
|
(10) |
+ |
Stipe of the fruit shorter than the calyx |
|
(14) |
|
|
|
|
10 (9) |
Stipules not foliaceous, deciduous |
|
(11) |
+ |
Stipules foliaceous, persistent |
|
(12) |
|
|
|
|
11 (10) |
Leaflets pubescent on both sides |
|
Astragalus coluteocarpus var. coluteocarpus |
+ |
Leaflets glabrous on adaxial side |
|
Astragalus coluteocarpus var. glaber |
|
|
|
|
12 (10) |
Fruit septum less than 1 mm broad, leaflets
21-41 |
|
(13) |
+ |
Fruit septum more than 1 mm broad, leaflets 13-17,
occasionally up to 23 |
|
Astragalus falconeri |
|
|
|
|
13 (12) |
Fruit glabrous |
|
Astragalus hoffmeisteri var. hoffmeisteri |
+ |
Fruit pilose, at least when young |
|
Astragalus hoffmeisteri var. pilous |
|
|
|
|
14 (9) |
Fruit 14-24-seeded |
|
(15) |
+ |
Fruit 6-8-seeded |
|
Astragalus subumbellatus |
|
|
|
|
15 (14) |
Entire plant (including fruit) pilose |
|
Astragalus scorpiurus var. scorpiurus |
+ |
Entire plant (including fruit) glabrous |
|
Astragalus scorpiurus var. glaber |
|
|
|
|
16 (1) |
Fruit unilocular, leaflet c. 6 mm or less long;
vexillum c. 8-10 mm long |
|
Astragalus heydei |
+ |
Fruit sub-bilocular, leaflets 7 mm or more long;
vexillum c. 18 mm or more long |
|
(17) |
|
|
|
|
17 (16) |
Peduncle (5)-8-10 cm long, raceme 8-20-flowered;
leaflets 4-15 mm broad |
|
Astragalus mirabilis |
+ |
Peduncle 3-7 cm long, raceme 3-8-flowered; leaflets
2-3 mm broad (Fig.) |
|
Astragalus gahiratensis |