Neostapfia
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Scientific classification 
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Neostapfia is a genus of endemic Californian bunchgrasses, in the subfamily Chloridoideae of the grass family, Poaceae.[3][1][4][5][6] The only known species is Neostapfia colusana, with the common name Colusa grass.[1]
Distribution
Neostapfia 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]
Description
Neostapfia 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 botanist Otto Stapf.
Conservation
The plant is limited to vernal pool habitats, a type of ecosystem that is increasingly rare as Central Valley land is consumed by development and agriculture, and damaged by flood-control regimens and other alterations of hydrology.[10]
References
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- ^ a b c d Jepson (JM2): Neostapfia colusana
- ^ Kew World Checklist of Selected Plant Families
- ^ a b USDA: Neostapfia colusana
- ^ Davy, Joseph Burtt. 1898. "Stapfia, a new genus of Meliceae, and other noteworthy grasses." Erythea 6 (11): 109-113, text.
- ^ 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
- ^ Davy, Joseph Burtt 1899. "Concerning Stapfia." Erythea 7 (43)
- ^ Calflora Database: Neostapfia colusana, with county distribution maps.
- ^ Biota of North America Program 2013 county distribution maps for Neostapfia colusana
- ^ 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
- ^ California Native Plant Society Rare Plant Profile
External links
- Calflora Database: Neostapfia colusana (Colusa grass, Colusagrass)
- Jepson eFlora (JM2): Neostapfia colusana
- Grass Manual Profile: Neostapfia
- The Nature Conservancy — Neostapfia colusana
- UC Photos gallery — Neostapfia colusana
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