| Astragalus | 
|  | 
| A. lentiginosus | 
|
| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Eudicots | 
 
| Clade: | Rosids | 
 
| Order: | Fabales | 
 
| Family: | Fabaceae | 
 
| Subfamily: | Faboideae | 
 
| Clade: | Inverted repeat-lacking clade | 
 
| Tribe: | Galegeae | 
 
| Subtribe: | Astragalinae | 
 
| Genus: | Astragalus L.
 | 
|
|
| Type species | 
| Astragalus onobrychis 
 L. | 
| Species | 
| Over 3,000 species, see list of Astragalus species | 
| Synonyms | 
| 
Acanthophaca NevskiAcanthyllis PomelAiluroschia StevenAlopecias StevenAmmodytes StevenAnaphragma StevenAnkylobus StevenAstenolobium NevskiAstracantha PodlechAstragalina BubaniAstragaloides Adans.Atelophragma Rydb.Aulosema Walp.Barnebyella PodlechBatidophaca Rydb.Brachyphragma Rydb.Caryolobium StevenChondrocarpus StevenCnemidophacos Rydb.Contortuplicata Medik.Craccina StevenCryptorrhynchus NevskiCtenophyllum Rydb.Cymbicarpos StevenCystium StevenCystopora LunellDidymopelta Regel & Schmalh.Diholcos Rydb.Dipelta Regel & Schmalh.Diplotheca Hochst.Euilus StevenEuprepia StevenFeidanthus StevenGeoprumnon Rydb.Glandula Medik.Glaux HillGlottis Medik.Glycyphylla StevenGynophoraria Rydb.Halicacabus (Bunge) NevskiHamaria Fourr.Hamosa Medik.Hedyphylla StevenHesperastragalus A.HellerHesperonix Rydb.Hippomanica MolinaHolcophacos Rydb.Homalobus Nutt.Hypoglottis Fourr.Jonesiella Rydb.Kentrophyta Nutt.Kirchnera OpizLithoon NevskiLonchophaca  Rydb.Macrosema StevenMedyphylla OpizMicrophacos Rydb.Myctirophora NevskiMyobroma StevenNeodielsia HarmsOedicephalus NevskiOnix Medik.Onyx Medik.Ophiocarpus (Bunge) Ikonn.Orophaca BrittonOxyglottis (Bunge) NevskiPedina StevenPhaca L.Phacomene Rydb.Phacopsis Rydb.Philammos StevenPhysondra Raf.Picraena StevenPisophaca Rydb.Podlechiella Maassoumi & Kaz.OsalooPodochrea Fourr.Poecilocarpus NevskiProselias StevenPsychridium StevenPterophacos Rydb.Rydbergiella Fedde & Syd. ex Rydb.Saccocalyx StevenSewerzowia Regel & Schmalh.Solenotus StevenStella Medik.Tium Medik.Tragacantha Mill.Triquetra Medik.Xerophysa StevenXylophacos Rydb.
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Astragalus is a large genus of over 3,000 species of herbs and small shrubs, belonging to the legume family Fabaceae and the subfamily Faboideae. It is the largest genus of plants in terms of described species. The genus is native to temperate regions of the Northern Hemisphere. Common names include milkvetch (most species), locoweed (in North America, some species) and goat's-thorn (A. gummifer, A. tragacantha). Some pale-flowered vetches (Vicia spp.) are similar in appearance, but they are more vine-like than Astragalus.