Jepson eFlora
Key to families | Table of families and genera

Key to Rubiaceae

View taxon page for Rubiaceae

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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