Английская Википедия:Hopia

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Hopia obtusa is a species of grass commonly known as vine mesquite. This plant was treated as Panicum obtusum until recently when more molecular and genetic material revealed new information about it.[1] Hopia obtusa is now placed in the monotypic genus Hopia.[1]

Description

Hopia obtusa is a perennial grass with stems up to Шаблон:Convert tall. It has long, creeping rhizomes or shallow rhizomes with swollen, villous nodes. The culms are usually in small, compressed, glaucous clumps that are either erect or decumbent. Nodes are hairy lower on the plant but glabrous higher up. The sheath is pubescent to pilose lower on the plant but glabrous higher up. It has membranous truncate, irregularly denticulate ligules that are Шаблон:Convert big. Leaf blades are Шаблон:Convert long and Шаблон:Convert wide; they are ascending, firm, glaucous, sparsely pilose near the base, often scabrous on the margins, and involute towards the tips. The panicles are Шаблон:Convert long and Шаблон:Convert wide. The panicle has 2 to 6 spikelike, erect, puberulent, and 3-angled branches. The ultimate branchlets are one-sided. The pedicels are paired and congested. Some spikelets are on short pedicels that are Шаблон:Convert, while others are on longer pedicels Шаблон:Convert. Spikelets are Шаблон:Convert long, ellipsoid, terete to slightly laterally compressed, glabrous, and obtuse. The lower glumes are about 3/4 as long as the spikelet and are 5- or 7-veined. Upper glumes and lower lemmas equal the spikelet's length and are 5– to 9-veined. The lower florets are staminate with its lower paleas Шаблон:Convert long. The upper florets are puberulent at the bases and apices. Flowering is from May through October.[2]

Habitat and ecology

Hopia obtusa grows in seasonally wet sand or gravel, especially on stream banks, ditches, roadsides, wet pastures, and rangeland. Its range extends from the southwestern United States to central Mexico.[2]

It is a larval host to the dotted roadside skipper.[3]

References

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  1. 1,0 1,1 Шаблон:Cite journal
  2. 2,0 2,1 Шаблон:Cite web
  3. The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.