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. Inflorescence a dense, spheric head, flowers >> 50; fruit 2–4 dry, brown nutlets; leaves not fleshy ..... CEPHALANTHUS

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

1' Annual to subshrub

3. Leaves all opposite

4. Flowers sessile, axillary, 1–many per node ..... [DIODIA]

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

3' Leaves generally whorled

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

5' Inflorescence not a spike; calyx present or 0

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

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


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]

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

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