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|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
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|Family: Apiaceae (Umbelliferae)||View Description||Dichotomous Key|
|Genus:||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Habit: Perennial herb from taproot or clustered roots. Stem: stout, erect, generally branched, hollow. Leaf: blades oblong to round, ternately, pinnately, or palmately compound (simple), leaflets large, lobed or serrate; distal-most cauline generally reduced to large sheaths. Inflorescence: umbels compound, large, margins generally sterile; bracts 0--few, generally deciduous; bractlets generally present, persistent; rays, pedicels many, spreading-ascending. Flower: marginal bilateral, outer petals > others, 2-lobed; calyx lobes generally 0; petals wide, white, +- yellow. Fruit: oblong-ovate to round or obcordate, compressed front-to-back; ribs unequal, marginal thin-winged, veined near outer margin, others thread-like; oil tubes 1--2 per rib-interval, unequal in length; fruit axis divided to base. Seed: face flat.
Species In Genus: +- 80 species: Eurasia, eastern Africa, 1 in North America. Etymology: (Hercules, presumably from large stature of some species)
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
Jepson Online Interchange
Previous taxon: Glehnia littoralis subsp. leiocarpa
Next taxon: Heracleum maximum
Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2016. Heracleum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=10192, accessed on May 30, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 30, 2016.