|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Annual, taprooted; often strongly scented. Stem: decumbent to erect, 1--several from base, 2--90 cm, simple or generally +- openly branched, distally glabrous or sparsely hairy to woolly, often glandular. Leaf: simple, alternate, entire to pinnately lobed; basal generally withered at flower (persistent), petioled or sessile, 4--11 cm, linear to oblanceolate or spoon-shaped, lobes (if present) toothed; cauline sessile (occasionally clasping), reduced distally on stem, 1-veined, linear to ovate or obovate, glabrous or sparsely hairy to woolly, occasionally with stalked or bead-like sessile glands. Inflorescence: heads radiant, generally slender-peduncled in open cyme- or panicle-like clusters (+- sessile in spike- or head-like clusters); involucre 4--13 mm diam, narrowly cylindric or fusiform to obconic or hemispheric; phyllaries 10--55, graduated in 4--8 series, erect or recurved, persistent, spreading or reflexed in age, texture leaf-like or scarious (papery), tips green or +- purple-tinged, glabrous or sparsely hairy to woolly, often glandular; receptacle slightly convex, shallowly pitted, epaleate. Disk Flower: ; Fruit: 1--5 mm, cylindric to obconic, not compressed, smooth or obscurely 5--10 nerved, faces tan or mottled purple-brown, densely puberulent to long-soft-hairy; pappus of 3--55 persistent bristles, free, fused at base, or fused throughout into awns, occasionally reduced to crown, white, tan, or +- red. Chromosomes: 2n=10, except Lessingia nemaclada, 2n=10,12.
Species In Genus: 12 species: California; western Nevada, northwestern Arizona, northern Baja California. Etymology: (C.F. Lessing, German-born botanist, 1809--1862) Note: Other species now treated in Benitoa and Corethrogyne.
eFlora Treatment Author: Staci Markos
Jepson Online Interchange
Key to LessingiaPrevious taxon: Leptosyne stillmanii
Next taxon: Lessingia arachnoidea
Citation for this treatment: Staci Markos 2017. Lessingia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=507, accessed on April 28, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 28, 2017.