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Tongpeia arachnoides

culm sheath on young shoot culm sheath base and culm node leaf sheaths
apex of young shoot naked culm sheath auricle new shoot apex with fimbriate sheath ligule fimbriate culm sheath ligule interior view leaf sheath apex - note fimbriate ligule abaxial of petiole and proximal part of leaf blade hairy rest of abaxial leaf surface glabrous shoot and culm colouration sheaths on young branches apex of small shoot seedling nodes hairy hair ring at lemma base on seed
seed with very long lemmas sparse hairs on adaxial leaf surface
no photos yet at BambooWeb
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Precise origin not known
no account in Flora of China
Borinda entries in ABS Species & Sources List
find supplier in Plant Finder
See description in Kew's GrassBase - The Online World Grass Flora
No entry in Kew's GrassBase - The Online World Grass Flora

Tongpeia arachnoides Stapleton J. Amer. Bamboo Soc. 31: 12. 2021.

Horticultural synonyms: “Fargesia yunnanensis”, “F. fungosa”, “F. papyrifera”, “F. sp. ‘Lijiang’”, “F. songmingensis”, “F. huaningensis”, “F. albocerea”, F. albocerea ‘Black Culm’”,“F. similaris”, F. yuanjiangensis” and “F. gaolinensis”.

  Missouri Botanical Garden's Tropicos Database of Names  TROPICOS

    International Plant Names Index   IPNI

   Multilingual Multiscript Plant Names Database  MMPND

 Electronic Plant Identification CentreElectronic Plant Identification Centre  KEW

Plants forming dense clumps. Rhizomes pachymorph, neck to 15 cm. Culms pendulous, probably to ca. 6 m tall; internodes terete, to 15-25(-30) cm, to ca. 2.5 cm in diam., bright green with light deciduous blue-grey wax at first, becoming yellow-green, or red to dark purple after exposure, smooth, glabrous, walls thick; nodes not prominent, supra-nodal ridge obscure, sheath scar prominent, initially lightly tomentose; branches initially 5-9, strong and angular. Culm sheaths very persistent, much longer than internodes, to 40 cm, narrowly triangular, distally very thin, basally thick-papery, initially light green, variably purple-spotted and blotched at first, sparsely to densely and persistently purple-setose, each bristle in a dark spot or blotch, apex of new shoots broad and inflated and often pink to purple, margins prominently long-ciliate, base glabrous or with sparse hairs; auricles to 1 mm, reflexed, an undulating band merging into blade base, purple, tomentose; oral setae absent; ligule to 3 mm, fimbriate, tomentose; blade short, lanceolate, glabrous, reflexed, deciduous. Leaf sheath often distally pink-purple, glabrous but distal margins lightly pubescent and apically shortly ciliate, shoulders level; auricles large, falcate, reflexed, often purple; oral setae many, spreading, straight or wavy, white, to 10 mm; ligule truncate, to 0.5 mm, tomentose, long-fimbriate; external ligule to 0.5 mm, tomentose, shortly ciliate; blade to 12 cm, lanceolate to broadly lanceolate, light green, base rounded to cuneate, abaxial very shortly pilose to proximally densely pilose and extremely densely pilose by basal midrib and onto pseudopetiole, adaxial initially sparsely to densely pilose, secondary veins 3-4-paired, margins spinescent-serrulate, transverse veins weak. Florets with basal ring of tufted white hair, lemmas much longer than paleas, apically shortly ciliate and sparsely scabrous.

Only known from seed and young plants, the seed very widely sold from Yunnan, China by a private Chinese company. It does not seem to match the published description of any Fargesia or Borinda species precisely. Several seed collections were made from different parts of Yunnan, up to 200 miles apart. As very young plants they all appear very similar. Only time will tell how different they are as mature plants. The description above is made from the first seed batch, sold as Fargesia yunnanensis.

Fast-growing bamboos, with pendulous culms carrying delicate light green foliage leaves on long branchlets. The culms would be attractive, with light blue-grey wax on distal parts of culm internodes at first, the culms darkening to shades of purple after exposure, but they are obscured by dense foliage and very long, very persistent and untidy culm sheaths. As with all seedlings there is slight variation between plants. However, they all seem well distinguished from other species by their long-fimbriate ligules along with naked auricles on culm sheaths, and falcate auricles with spreading setae on leaf sheaths, as well as their long culm sheaths, distally much inflated at shoot apices. This is a characteristic repeated in the long, broad, often broken apices to the lemmas, making seed quite distinctive. The dense purple hairs and spots on the culm sheaths are similar to those of T. syrinx.

Marketed globally from 2011 under many different names (listed above), but all seed batches were very similar, and quite distinctive, the florets all having basal beards and long lemmas. They are not F. papyrifera, F. yunnanenis or F. albocerea. nor apparently B. fungosa, as cultivated in the west at least, see T. syrinx. Fargesia similaris is not well known, but has tough culm sheaths and like F. yuanjiangensis, no leaf sheath auricles. The names F. songmingensis, F. huaningensis, and F. gaolinensis are unpublished, but it has been suggested that they represent varieties of F. yunnanensis, which is a spreading bamboo, also known as Yushania yunnanensis. A remarkable number of misidentifications or adoptions of new unpublished names have occurred for these seed batches.

The plants are vigorous, but they are only hardy down to about -6C (28F) before damage to leaves and late shoots begins. Large quantities of seed were collected in different batches, and many plants raised for sale, but the lack of hardiness in all of them has been a disappointment to many, especially as the seed was marketed as hardy to -25C.

Caveat emptor applies to most internet bamboo seed and plants, but now unfortunately care is required on purchase of all bamboos sold under any of the above names.

Tarzanus (2011-12). Fargesia fungosa - starting from seed. At www.bamboocraft.net/forums

Canadianplant et al. (2011-12) Starting Fargesia species from seed. At www.bambooweb.info/bb

Olivier D. et al. (2013) Semis Fargesia. At www.bambous.fr/forum

 

 

 

 

Precise origin not known Rumoured to have been first collected by Professor Tan Hongchao of Chinese University of Yunnan, in Gaolin, Songming Xian at 2100 m, but seed also collected from various other localities.

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