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

Key to Rubiaceae

View taxon page for Rubiaceae


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

1. Shrub or small tree

2. Inflorescencedensespheric , flowers >> 50; fruit 2–4 dry, brown nutletsleaves not fleshy ..... CEPHALANTHUS

2' Inflorescence a short, compound , flowers 1–5; fruit drupe, orange-red; leaves fleshy ..... [COPROSMA]

1' Annual to subshrub

3. Leaves all 

4. Flowers , 1–many per  ..... [DIODIA]

4' Flowers long-pedicelled; inflorescence terminal cyme, open, few-flowered ..... KELLOGGIA

3' Leaves generally 

5. Inflorescence a dense bracts overlapping; calyx 0 ..... CRUCIANELLA

5' Inflorescence not a spike; calyx present or 0

6. Flowers pedicelled (except Galium murale), in , clusters of 2–many, occasionally 1;  0; calyx 0 ..... GALIUM

6' Flowers sessile, in few-flowered heads; involucre bracts ± free, ± = leaves; calyx 6-lobed ..... SHERARDIA


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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 .

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