Difference between revisions of "Humulus"

Linnaeus

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.
FNA>Volume Importer
FNA>Volume Importer
Line 66: Line 66:
 
|publication year=;1754
 
|publication year=;1754
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_1119.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V3/V3_1119.xml
 
|genus=Humulus
 
|genus=Humulus
 
}}<!--
 
}}<!--
  
 
-->[[Category:Treatment]][[Category:Cannabaceae]]
 
-->[[Category:Treatment]][[Category:Cannabaceae]]

Revision as of 17:14, 18 September 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).

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