Lingnania funghomii
Lingnania funghomii McClure, Lingnan Univ. Sci. Bull. No. 9, 1940: 36.
Synonym: Bambusa guangxiensis L. C. Chia & H. L. Fung, Acta Phytotax. Sin. 18 (2), 1980: 214.
Type: Guangxi, 27 July 1937, H. Fung 21073 (LU)
Thai name: No known records.
Chinese name: 桂箪竹 (guì dān zhú).
English name: Guangxi Dwarf Bamboo.
Distribution: THAILAND: No records are known on whether this species has been successfully introduced and cultivated in Thailand. — CHINA (South): Guangxi; on moist slopes in lowland river valleys, at 300–500 m altitude; Guizhou.
Descriptions:
(1) "Culms 2–5 m, 1.5–3 cm in diam., apically pendulous; internodes 40–60 cm, initially with bulbous-based hairs, papillate in age; wall 2–4 mm thick; nodes flat; sheath scar with a densely brown hirsute ring. Branches many, subequal. Culm sheaths deciduous, leathery, initially with dense, brown tuberculate hairs, apex truncate or slightly concave; auricles minute; oral setae 3–5 mm; ligule ca. 1 mm, serrulate; blade reflexed, base 1/4–1/3 as wide as sheath apex, both surfaces glabrous. Leaf sheaths silky hairy; auricles uniform; oral setae 6–8 mm; blade narrowly lanceolate, 8–16 × 1–1.5 cm. Inflorescence unknown." — Flora of China, as "Bambusa guangxiensis", accessed 13 Nov. 2020 [#1303].
(2) "Habit: Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 300 cm long; woody. Culm-internodes terete; hollow; distally hispid; with tubercle-based hairs. Lateral branches dendroid. Branch complement several. Culm-sheaths deciduous; chartaceous; hispid; with appressed hairs; glabrous on margins; truncate at apex; auriculate; setose on shoulders; shoulders with curved hairs. Culm-sheath ligule ciliolate. Culm-sheath blade lanceolate; constricted at base; deciduous; reflexed; glabrous on surface. Leaves cauline. Leaf-sheath oral hairs lacking. Leaf-sheath auricles absent. Ligule an eciliate membrane. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate. Leaf-blade margins scabrous. Leaf-blade apex acuminate. Inflorescence: Flowering specimens unknown." — Kew GrassBase, as "Bambusa guangxiensis", accessed 13 Nov. 2020 [#1335].
Images: Line drawing in Flora of China, as "Bambusa guangxiensis" [#1303]. Photos on Facebook, 1 Jan. 2018 (flowers), as "Bambusa guangxiensis". Photo of specimen IBK00176583 (Guangxi Inst. Bot.) in Chinese Virtual Herbarium, as "Bambusa guangxiensis" [#1350].
Uses: Culms are split for weaving and tying.
Specimen: BS-0449 [-], received from cultivated stock as "Bambusa guangxiensis" from the USA, 1 June 2010.
Comments:
(1) The plant was weakly developed and showed signs of flowering in mid-2016. Confirmation of species identification was not possible in 2017, but the soft pale hairy foliage-leaf sheaths and bristly auricles indicated that the plant could have been properly identified.
(2) The plant at Bambusetum Baan Sammi died in 2018.
(3) A plant in the Anji Bamboo Garden flowered in 2018.
(4) The photo of the specimen in the Chinese Virtual Herbarium clearly shows three characteristics that are typical in Lingnania: Thin-walled culm-internodes, a concavely depressed culm-leaf sheath apex, and the basal margin of the sheath with a narrow band of dense hairs.
Lingnania funghomii, syn. Bambusa guangxiensis: Leaf sheaths (BS-0449)