9596.000 Lactuca L. - Lettuces

Description of the genus

Annual, biennial or perennial herbs. Leaves radical or cauline and alternate. Involucre usually cylindric. Phyllaries 3-5-seriate. Receptacle without scales. Florets yellow, whitish, purplish or blue. Achenes beaked or at least somewhat attenuate above, with ascending hairs or rough projections on the ribs or at least on the margins; ribs unequal. Pappus several-seriate of uniform barbellate setae, rarely with an outer ring of minute setae.

Derivation of name: from lac, Latin for milk, referring to the milky juice.

Worldwide: c. 75 species, cosmopolitan but many in northern temperate zones

Zambia: 13 taxa.

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Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsProvincesContent
calophylla C.Jeffrey N,EN,McImage
homblei De Wild. [NrEnd]WNwDescription, Image
imbricata Hiern var. imbricata N,W,C,E,SCb,N,E,C,LkImage
imbricata Hiern var. hockii (De Wild.) Dethier NN
inermis Forssk.B,N,W,C,E,SCb,N,E,Lk,S,WDescription, Image
lasiorhiza (O. Hoffm.) C. JeffreyN,W,ECb,N,McDescription
longispicata De Wild. NN
mwinilungensis G.V.Pope WNw
praecox R.E.Fr. N,W,ECb,N,Mc
schultzeana B├╝ttner WNw
schweinfurthii Oliv. & Hiern NNw,N
setosa Stebbins ex C.Jeffrey N,WCb,N
zambeziaca C.Jeffrey N,WNw,N

Other sources of information about Lactuca:

Our websites:

Flora of Botswana: Lactuca
Flora of Malawi: Lactuca
Flora of Mozambique: Lactuca
Flora of Zimbabwe: Lactuca
Flora of Zimbabwe: cultivated Lactuca

External websites:

ePIC (electronic Plant Information Center): Lactuca
Flora Zambesiaca web site: Lactuca
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Lactuca
Wikipedia: Lactuca
IPNI (International Plant Names Index): Lactuca
Kew Herbarium catalogue: Lactuca

Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-23

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2023). Flora of Zambia: Genus page: Lactuca.
https://www.zambiaflora.com/speciesdata/genus.php?genus_id=1579, retrieved 7 February 2023

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