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Tuctoria
''Tuctoria'' is a genus of three species of grass in the family Poaceae. Spiralgrass is a common name for plants in this genus. These are bunchgrass species that are found in vernal pools of central California and Baja California, Mexico. The plants are annuals that germinate under water in the spring and grow submerged for weeks. After the pools dry down, the grasses initiate a new set of foliage that lasts for one to two months until flowering and fruiting are complete. Taxonomy The genus was circumscribed by John R. Reeder in 1982. Along with ''Orcuttia'' and '' Neostapfia'', ''Tuctoria'' is one of three genera in the tribe Orcuttieae, previously outlined by Reeder in 1965. All three ''Tuctoria'' species were formerly assigned to ''Orcuttia'', the type genus of Orcuttieae. Reeder erected ''Tuctoria'' after determining that the three species were more closely related among themselves than to any of the other ''Orcuttia'' species. Shared features include chromosome numbers, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuctoria Fragilis
''Tuctoria'' is a genus of three species of grass in the family Poaceae. Spiralgrass is a common name for plants in this genus. These are bunchgrass species that are found in vernal pools of central California and Baja California, Mexico. The plants are annuals that germinate under water in the spring and grow submerged for weeks. After the pools dry down, the grasses initiate a new set of foliage that lasts for one to two months until flowering and fruiting are complete. Taxonomy The genus was circumscribed by John R. Reeder in 1982. Along with ''Orcuttia'' and ''Neostapfia'', ''Tuctoria'' is one of three genera in the tribe Orcuttieae, previously outlined by Reeder in 1965. All three ''Tuctoria'' species were formerly assigned to ''Orcuttia'', the type genus of Orcuttieae. Reeder erected ''Tuctoria'' after determining that the three species were more closely related among themselves than to any of the other ''Orcuttia'' species. Shared features include chromosome numbers, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuctoria Mucronata
The grass ''Tuctoria mucronata'', which is known by several common names including prickly spiralgrass, Solano grass, and Crampton's tuctoria, is a federally listed endangered species, endangered plant species Endemism, endemic to two counties in northern California. Description It is a small annual, with stems growing decumbent against the ground to a maximum length of 12 cm, and turning upward at the tips. The leaf, leaves are 2–4 cm long, and secrete a sticky, aromatic juice. In the spring, the grass bears a small inflorescence 1.5–6 cm long, with numerous crowded raceme, spikelets. Ecology Solano grass is a vernal pool plant. It is only found in these seasonally wet areas, a type of habitat which is endangered. This species is thought to have once grown in isolated parts the northern Sacramento River Delta, Sacramento-San Joaquin Delta, in areas which flooded during the wet season, but any former habitat there has been long since reclaimed for agriculture. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuctoria Greenei
''Tuctoria greenei'' is a species of grass endemic to California. Its common names include awnless spiralgrass and Greene's tuctoria. It is included by the California Native Plant Society on list 1B.1 (rare, threatened, or endangered). It is also listed by the state of California as rare and by the Federal Government as endangered, having been federally listed on March 26, 1997. This grass typically occurs in vernal pools in open grassland on the eastern side of the Sacramento and San Joaquin Valleys.C.Michael Hogan, Marc Papineau, George Ball et al., ''Environmental Assessment for the Claribel and Albers Roads Golf Course and Residential Development, Stanislaus County'', Earth Metrics Inc., published by Stanislaus County and the State of California Environmental Clearinghouse, Report number 10540, June 7, 1990 This endangered species is threatened by the destruction of its already rare vernal pool habitat. Processes causing this habitat destruction include agriculture, urban dev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
