Wasserbambus

Chines. Name: Zi tuo zhu

Engl. Name: Water Bamboo

Leicht unterschiedliche Blattformen an Heteroclada

Sattgrüne		längliche		Blätter		Neue Blätter

Übersetzte Originalbeschreibung aus der Flora of China Vol.9, 1996:

Beschreibung / description:

Culms high to 6 m, diameter to 3 cm; internodes to 30 cm long, initially white powdery, sparsely puberulent; wall 3–5 mm thick; nodal ridge flat and as prominent as sheath scar in large culms, strong elevated and more prominent than sheath scar in slender culms.
Branches deflexed or subhorizontal. Culm sheaths deep green or green, tinged with purple or lila, white powder, glabrous or sparsely strigose, margins ciliate; auricles purple, oval to elliptic, sometimes shortly falcate, small, absent on small shoots; oral setae well developed or few, erect, and fine on small shoots; ligule slightly concave or weakly arcuate, short, white ciliolate; blade erect, green, usually tinged with purple, rarely entirely purple triangular to narrowly triangular, cupped, flat or slightly wavy.
Leaves 1 or 3 per ultimate branch; sheath glabrous, margins ciliate; auricles absent; oral setae deciduous, erect; ligule short; flowering branchlets densely capitate, 1,6 to 2,3 cm, usually lateral on mature leafy branches; scaly bracts 4 - 6, gradually larger, or terminating young leafy branches then subtended by 1 or 2 spathes with an ovate or narrow blade; spathes 2–6, broadly ovate or broader, 0.9 - 1.2 cm, papery or thinly leathery, gradually narrowed and thinned in distal ones, puberulent at apex, margins ciliate, otherwise glabrous or subglabrous, blade absent or small, mucronate. Pseudospikelets 1 - 7 per spathe, subtended by bracts, bracts variable in form and size, to 1.2 cm, membranous, keeled, tenuously 5-7 veined, apex pubescent, acuminate. Spikelets to 1.5 cm; florets 3-7, distal ones sterile. Glumes absent to 3, resembling bracts in size, form, and texture, sometimes uppermost one similar to lemma; rachilla internodes 1.5-2 mm, clavate, glabrous, apex subtruncate; lemma lanceolate, 0.8 - 1.2 cm, distal 1 - 3 pubescent, 9 - 13 veined, distally keeled, apex subulate-acuminate; palea shorter than lemma, puberulent except for base; lodicules rhomboid-ovate, ca. 3 mm, tenuously 7 veined, margins ciliate. 
New shoots April - May or later.

Verbreitung / Distribution:

China: Native to provinces south of the Yangtze River. Introduced to USA 1984 and later to Europa.