familyCannabaceae
genusHumulus
Show Lower Taxa
Difference between revisions of "Humulus"
Sp. Pl. 2: 1028. 175.
Gen. Pl. ed. 5, 453. 1754.
Common names: Hop houblon
Etymology: Latin humulus, applied to hop plant
Treatment appears in FNA Volume 3.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> taprooted annuals or rhizomatous perennials, rightward-twining. <b>Stems</b> usually branched, armed with rigid 2-branched, stalked hairs that facilitate climbing. <b>Leaves</b> simple; petioles often twining, with 2-branched hairs. <b>Leaf</b> blade mostly cordate, palmately lobed, sometimes unlobed; surfaces abaxially resin-dotted and×or gland-dotted. <b>Inflorescences</b>: staminate inflorescences axillary and terminal, cymose panicles, erect to pendent, (10-)20-100+-flowered, flowers small; pistillate axillary, spikes or racemes, flowers solitary or paired, short-pedicellate, subtended by bracts and bracteoles. <b>Staminate</b> and pistillate flowers usually on different plants. <b>Achenes</b> lenticular or terete, ensheathed by brownish or sometimes mottled persistent perianth; embryo coiled. <b>x</b> = 10.</span><!-- |
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| − | |distribution=Temperate Northern Hemisphere | + | |distribution=Temperate Northern Hemisphere. |
|discussion=<p>Species 3 (2 in the flora).</p> | |discussion=<p>Species 3 (2 in the flora).</p> | ||
|tables= | |tables= | ||
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|basionyms= | |basionyms= | ||
|family=Cannabaceae | |family=Cannabaceae | ||
| − | |distribution=Temperate Northern Hemisphere | + | |distribution=Temperate Northern Hemisphere. |
|reference=small1978a;small1980a | |reference=small1978a;small1980a | ||
|publication title=Sp. Pl.;Gen. Pl. ed. | |publication title=Sp. Pl.;Gen. Pl. ed. | ||
|publication year=;1754 | |publication year=;1754 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_1119.xml |
|genus=Humulus | |genus=Humulus | ||
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Revision as of 14:32, 27 July 2019
Herbs, taprooted annuals or rhizomatous perennials, rightward-twining. Stems usually branched, armed with rigid 2-branched, stalked hairs that facilitate climbing. Leaves simple; petioles often twining, with 2-branched hairs. Leaf blade mostly cordate, palmately lobed, sometimes unlobed; surfaces abaxially resin-dotted and×or gland-dotted. Inflorescences: staminate inflorescences axillary and terminal, cymose panicles, erect to pendent, (10-)20-100+-flowered, flowers small; pistillate axillary, spikes or racemes, flowers solitary or paired, short-pedicellate, subtended by bracts and bracteoles. Staminate and pistillate flowers usually on different plants. Achenes lenticular or terete, ensheathed by brownish or sometimes mottled persistent perianth; embryo coiled. x = 10.
Distribution
Temperate Northern Hemisphere.
Discussion
Species 3 (2 in the flora).
Selected References
Lower Taxa
Key
| 1 | Veins on abaxial surfaces of leaf blades pubescent, with stiff hairs; marginal areas of adaxial surfaces of younger leaf blades with stiff cystolithic hairs; petioles usually longer than blades; margins of pistillate bracteole densely ciliate-hairy; anthers without glands. | Humulus japonicus |
| 1 | Veins on abaxial surfaces of leaf blades glabrous or with soft pubescence, without straight, erect hairs; marginal areas of adaxial surfaces of younger leaf blades with few or no cystolithic hairs; petioles usually shorter than blades; margins of pistillate bracteole not ciliate-hairy; anthers glandular. | Humulus lupulus |