ERYNGIUM HETEROPHYLLUM PDF

Leaves: Basal rosette and alternate cauline leaves; lower cauline leaves pinnatifid to bipinnatisect; basal leaves pinnatisect to spinose-serrate. Flowers: Small, whitish, clustered in dense bracteate heads which are in turn arranged in open, long-peduncled panicles. Bracts subtending the heads are yellowish above, lanceolate to linear-lanceolate, mm long, entire or with pairs of lateral spines near the middle; floral bractlets subtending each small flower are usually entire; calyx lobes lanceolate to ovate, obtuse or acute; corollas white or bluish white. Fruits: Capsule splitting into 2 single seeded mericarps, ovoid, flattened laterally, covered with hyaline scales or tubercules, the ribs obsolete, with several inconspicuous oil tubes. Seed faces flat. Ecology: Found on plains and along water courses, from 4,, ft m ; flowering August-October.

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Flowering June through September. The entirely Mexican Eryngium longifolium Cav. It also usually occurs in drier habitats at higher elevations. Habitat 1, m 4, ft in New Mexico. This location narrative would place the collection in Arizona, but is not actually written on the specimen sheet or the isotype specimen sheets at the Smithsonian US and Gray Herbarium GH.

This species has a very scattered and highly disjunct distribution. It is known from a few scattered springs in the four-corners region of Arizona, Chihuahua, New Mexico and Sonora and then is disjunct to the southeast more than miles to the region where Durango Jalisco, Nayarit and Zacatecas adjoin. Conservation Considerations Aridland spring habitats are being reduced in number and size throughout the range of E.

Las Playas Springs have been dried by the Playas copper smelter and this species is probably extirpated from New Mexico. This wetland species is rare and endangered in the United States, but additional information is needed on its distribution and abundance in Mexico. Important Literature Sivinski, R. Arizona Game and Fish Department. Arizona eryngo. A synopsis of the North American species of Eryngium. American Midland Naturalist 25 2 : Stevens, L.

Meretsky eds. Aridland springs in North America: ecology and conservation. New Mexico Rare Plants.

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Eryngium heterophyllum

All treatments were administered every day at h for four weeks. Table 1 Experimental groups. The mice had free access to this diet for four weeks. After this period, we found that the mice were already hypercholesterolemic, compared with healthy mice. At this point, the different treatments were administered orally, every day at h, for the rest of the four weeks along with the hypercholesterolemic diet.

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Eryngium Species, Mexican Thistle, Wright's Eryngo

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