Mianzhu belongs to the Gramineae family and belongs to the Acanthus genus, which is a tree like bamboo plant with an underground sympodial stem. The pole is upright and can reach a height of up to 15 meters, with a straight tip; The internode is cylindrical, the rod wall is thick, and the rod ring is flat; The sheath ring is raised, and the main branch is thick and long. The sheath ear is not obvious, and the sheath mouth has many tassels; The top of the sheath tongue is serrated, and the sheath segments are ovoid lanceolate. The apex is gradually pointed, and the base shrinks into a circular shape. The leaf sheath is hairless; The leaf ears are long and ovate, and the leaf tongue is flattened; The lower surface of the leaves is grayish green with slight hairs. False spikelets with withered grass color, several bracts, bright, and spikelets containing small flowers; The spikelet axis is easily broken after maturity; Lemma apex with prickly tips, abaxially glabrous; The inner lemma is longer than the outer lemma, and the anther apex is obtuse; The upper part of the ovary is covered with white villous hairs, and the stigma is feathered. The bamboo shoot period is in May. Distributed in the central and southern parts of Yunnan, China, it is widely cultivated and also found in local areas of Sichuan and Guizhou. The thick walls of Mianzhu poles are suitable not only for chopping bamboo strips and weaving bamboo utensils, but also for building materials

Main Value

The fiber density and toughness of Mianzhu are basically the same as those of Cizhu, with early production and high yield, making it suitable for bamboo weaving processing, papermaking, and consumption as bamboo shoots.

Mianzhu

Mianzhu is a tree like bamboo species with underground stem axis.

. The pole is upright, 7-10 (15) meters high, with a straight tip; The internodes are cylindrical in shape, 35-45 (55) centimeters long, dark green when young, sometimes with purple brown longitudinal stripes, slightly covered with white powder and sparse and easily falling white prickly hairs. The rod wall is thick, usually up to 2 centimeters; The pole ring is flat; The sheath ring is raised, covered with pilose hairs, often with remnants of the sheath base; The internodes are covered with white villi; The branching habit is low, with multiple branches clustered together, and the main branch is thick and long. The sheath is exfoliative, shorter than the internode, with yellow and brown small prickly hairs on the back, slightly concave or slightly arched at the top, and the sheath ears are not obvious. The tassel hairs at the sheath mouth are mostly; The sheath tongue is 2-3 millimeters high, with apical serrations and edge tassels 5-15 millimeters long; The sheath segments are everted or erect, ovate lanceolate, with an gradually pointed apex and a rounded base. The width is one-third of the top of the sheath, and the longitudinal veins on the ventral surface are densely covered with micro hairs and small prickly hairs

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