| 词条 | Neostapfia |
| 释义 |
|name = Colusa grass |image = Neostapfia.jpg |status = LT |status_system = ESA |status_ref = |display_parents = 4 |genus = Neostapfia |parent_authority = Burtt Davy |species = colusana |authority = Burtt Davy [1] |synonyms_ref = [2] |synonyms =
}}Neostapfia is a genus of endemic Californian bunchgrasses, in the Chloridoideae subfamily of the Poaceae (grass) family. [3] [1][4][5][6] The only known species is Neostapfia colusana, with the common name Colusa grass.[1] DistributionNeostapfia colusana is endemic to the Central Valley of California, in the northern section's Sacramento Valley and in the southern section's San Joaquin Valley. [1] The bunchgrass grows in vernal pools, which are seasonal shallow freshwater ponds. It is native to the Central Valley counties of Glenn, Colusa, Yolo, Solano, Stanislaus, and Merced. [7] [8] This rare grass is a federally listed threatened species in the United States.[9] [3] DescriptionNeostapfia colusana is a clumping bunchgrass with distinctive cylindrical inflorescences covered in flat spikelets. The inflorescences are said to resemble tiny ears of corn. They fruit in grains covered in a gluey secretion, and when a plant is mature each clump becomes brown and sticky with the exudate. The genus was named for the botanist Otto Stapf. ConservationThe plant is limited to vernal pool habitats, a type of ecosystem which is increasingly rare as Central Valley land is consumed by development and agriculture, and damaged by flood control regimes and other alterations of hydrology.[10] References1. ^1 2 3 Jepson (JM2): Neostapfia colusana 2. ^Kew World Checklist of Selected Plant Families 3. ^1 USDA: Neostapfia colusana 4. ^[https://www.biodiversitylibrary.org/page/6094082#page/145/mode/1up Davy, Joseph Burtt. 1898. "Stapfia, a new genus of Meliceae, and other noteworthy grasses." Erythea 6 (11): 109-113], text. 5. ^[https://www.biodiversitylibrary.org/page/6094082#page/144/mode/1up Davy, Joseph Burtt. 1898. "Stapfia, a new genus of Meliceae, and other noteworthy grasses." Erythea 6 (11): plate 1], line drawings of Neostapfia colusana, named as Stapfia colusana 6. ^[https://www.biodiversitylibrary.org/page/5916250#page/61/mode/1up Davy, Joseph Burtt 1899. "Concerning Stapfia." Erythea 7 (43)] 7. ^Calflora Database: Neostapfia colusana, with county distribution maps. 8. ^Biota of North America Program 2013 county distribution maps for Neostapfia colusana 9. ^The Calflora Database: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. 2015. Berkeley, California 10. ^California Native Plant Society Rare Plant Profile External links
6 : Chloridoideae|Endemic flora of California|Native grasses of California|Bunchgrasses of North America|Natural history of the Central Valley (California)|Monotypic Poaceae genera |
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