Psorodendron spinosum(A.Gray) Rydb.

Smoke Tree
Fabaceae - Fabales

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Protologue: N.L.Britton & al. (eds.), N. Amer. Fl. 24: 45 (1919)
Pronunciation: Pso-ro-dén-dron spi-nò-sum
Etymology: Gr. psoros, mangy, scabby + dendron, tree + L. spinosa for thorn (and these are actually thorns, not spines)

Jepson eFlora Treatment (currently as Psorothamnus spinosus)

Jepson eFlora Key to Psorothamnus

SD County Synoptic Voucher


Distribution:
 
Left: S.D. County Plant Atlas (http://sdplantatlas.org). Right: CCH2. Click to see current herbarium records.  

 
Psorodendron spinosum
A tree in a desert wash. Does it look like smoke from a distance? Twigs are thorn-tipped.


 

Psorodendron spinosum
In flower in May. Note prominent orange glands on calyx, bright orange anthers.