Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera

Key to Lycium

View taxon page for Lycium

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

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

1. Seeds 2;  ± round to ±  in ×-section ..... L. californicum

1' Seeds several to many; leaf elliptic to ± flat in ×-section

2. Calyx  1/2 to > tube or generally > 2 mm

3. Fruit firm, green-purple or yellow to orange

4. Leaves glandular-puberulent, not glaucousfruit yellow to orange, with 2 cross-grooves above middle ..... L. cooperi

4' Leaves glabrous, glaucous; fruit green-purple, not cross-grooved ..... L. pallidum var. oligospermum

3' Fruit soft, red

5. Stamens glabrous, attached near tube top ..... L. verrucosum

5' Stamens hairy at base, attached near tube middle.

6. Leaves generally glabrous; corolla generally 4-lobed ..... L. brevipes var. hassei

6' Leaves glandular-puberulent; corolla 5-lobed ..... L. parishii

2' Calyx lobes < 2/3 tube or generally < 2 mm

7. Branches curved to arched, thorns 0–1(2) cm ..... L. barbarum

7' Branches not curved to arched, thorns 1–5 cm

8. Corolla lobes 1/3 to = tube ..... L. brevipes var. brevipes

8' Corolla lobes < 1/3 tube

9. Plant glandular-hairy ..... L. fremontii

9' Plant ± glabrous

10. Corolla  margin glabrous to finely straight-ciliate; leaf ± linear-oblanceolate ..... L. andersonii

10' Corolla lobe margin woolly-ciliate; leaf narrowly oblanceolate to obovate ..... L. torreyi


Please use this Google Form for Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) . Jepson 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.