“Litsea glaucescens”的意思、由来-开放百科全书

Litsea glaucescens, also called Mexican bay leaf,^[2] is an evergreen tree or shrub {{convert|3|-|6|m}} high in the genus Litsea belonging to Lauraceae family. It is native from southern North America, mostly in Mexico. Distributed by Mexico and Central America.

It is a shrub or small tree that grows to {{convert|1.5|-|5|m|abbr=on}} high. The bark is brown, thick trunk. Young branches, glabrous, yellowish green, yellow or dark brown bark greenish or sometimes glabrous terminal buds sparsely pubescent.

Leaves are thin and long, with a constriction at the apex, solid green on the upper surface and lighter green below. Leaves alternate, petioles {{convert|6|-|11|mm}} long, glabrous, heat wave,{{clarify|date=February 2013}} blades {{convert|5|-|9|cm|abbr=on}} long, {{convert|2|-|3|cm|abbr=on}} wide, elliptic, base acute or attenuated, apex gradually acuminate, usually curved towards the tip, beam{{clarify|date=February 2013}} and underside glabrous, coriaceous or chartaceous, pinnatinervadas,{{clarify|date=February 2013}} lateral nerves 8–9 pairs, embedded in the fabric{{clarify|date=February 2013}} leaf yellowing and arched toward the apex.

Flower in clusters; Inflorescences (male and female) axillary, umbellate, solitary or clustered along branches sharp cutting, {{circa}} 1.0 cm long, 3-5 lorescencia inf f values{{clarify|date=February 2013}} by bracts pubescent on the midrib, with a pair of bracts small, deciduous additional between f values{{clarify|date=February 2013}}, peduncle c. 8.0 mm long, glabrous, pedicel 2.5-3.5 mm long, glabrous to slightly pubescent. Male flowers yellowish-white, 3.0-4.0 mm long, tepals 6, c. 3.0 mm long, c. 2. or 4 mm wide, elliptic to obovate slightly{{clarify|date=February 2013}} similar, externally glabrous or sparsely pubescent on the central portion, stamens usually 9 They are all similar, filaments c. 1.5 mm long, slender, glabrous, those of whorl interior glands,{{clarify|date=February 2013}} anthers c. 1.5 mm long, glabrous, glands c. 0.8 mm long, irregular, the female yellow, c. 2.0 mm long, tepals 6, c. 2.0 mm long, c. 1.0 mm wide, elliptical or narrowly elliptical, glabrous internally, the more casual{{clarify|date=February 2013}} and sparsely pubescent outside in the central portion, staminodes 9, c. 1.0 mm long, ovary and style glabrous.

It grows in the mountains, on the banks of rivers and is planted in the garden of houses. It is used as seasoning.

It is in danger of extinction,^[3]{{citation needed|date=February 2013}} because it has been used extensively for various uses, medicinal and culinary purposes even religious during the celebration of Palm Sunday. The species is one of the most important non-wood trees of Mexico. This species has been exploited for different purposes: religious,^[2] dietary and medicinal, where the young branches and leaf tissues are used. This has resulted in a considerable exploitation in virtually all their range.

This species is easily recognized by the entirely glabrous stems and leaves and yellow-green twigs, differs from Litsea guatemalensis in the latter is branches and leaves pubescent in youth. Litsea glaucescens is quite common in temperate forests of Mexico, coming to meet{{clarify|date=February 2013}} in the areas of contact with other vegetation types of affinity rather warm. It is very variable in size and shape of the leaves and as a result, it has an extensive synonymy.

References

1. ^{{cite web|url=http://www.theplantlist.org/tpl/search?q=litsea+glaucescens|title=The Plant List: A Working list of All Plant Species}}
2. ^¹{{cite web|url=http://www.colpos.mx/drural/TRIPTICO/RESUMENES_TESIS/MONTANEZ_ARMENTA_M_PAZ.htm|title=Proceso De Organización Social Para El Aprovechamiento Del Laurel Silvestre (Litsea Glaucescens) En La Sierra Del Laurel, Aguascalientes}}
3. ^NOM-059-SEMARNAT-2001,