Key to Parkinsonia

View taxon page for Parkinsonia

(For a list of species in Parkinsonia, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Plant with spines at 

nodes 

Position on a stem from which one or more structures (especially leaves, buds, branches, or flowers) arise.

; leaves 10–30 cm; 2° leaflets 30–60 ..... P. aculeata

1' Plant with thorns in 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

 axils or thorn-tipped branches; leaves 1–5 cm or 0; 2° leaflets 2–6 or 8–16

2. Leaf petioled; 2° leaflets 2–6, 4–8 mm; plant with thorns in leaf axils; fruit ± not narrowed between seeds ..... P. florida

2' Leaf 

sessile 

Without a petiole, peduncle, pedicel, or other kind of stalk.

; 2° leaflets 8–16, 1–5 mm; plant with thorn-tipped branches; fruit narrowed between seeds ..... P. microphylla

Please use this Google Form for Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.