Phyllostachys mannii

Synonyms: Phyllostachys assamica Gamble ex Brandis, Indian Trees, 1906: 667; Phyllostachys bawa É. G. Camus, Bamb., 1913: 66; Phyllostachys decora McClure, J. Arnold Arbor. 37, 1956: 182; Phyllostachys helva T. H. Wen, Bull. Bot. Res., Harbin 2 (1), 1982: 64; Phyllostachys sedan É. G. Camus, Bamb., 1913: 66.

Thai names: ปางปุก (pang puk) (Chiang Mai); เส่ด่าน (se-dan) (Shan: Chiang Mai); เมปเว (me-pa-we) (Karen: Chiang Mai). — T. Smitinand, 2001 [#1003].

Distribution: THAILAND: The species was reportedly found (wild or naturalized) in riparian habitat along the northern mountains of the Salween (สาละวิน Salawin) region, Mae Hong Son Province of northern Thailand (Classification of Bamboo, 2012, as "Phyllostachys bawa" [#1223]), perhaps also cultivated. — MYANMAR: Bernardmyo (near Mogok, Mandalay Region); Kachin Hills east of Bhamo, at 2,000 m altitude (for Phyllostachys sedan). — INDIA (North-East). — CHINA: Guizhou, Henan, Jiangsu, Zhejiang, Shaanxi, Sichuan, Tibet (Xizang), and Yunnan. — N. Bystriakova & al., Bamboo Biodiversity, 2003: map 43 [#1342].

Culm size: Height 9 (12) m, diameter 4 (6) cm.

Descriptions:

(1) "Habit: Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 1000-1200 cm long; 100-200 mm diam.; woody. Culm-internodes semiterete; thin-walled; light green. Culm-nodes glabrous. Lateral branches dendroid. Culm-sheaths 15-25 cm long; hispid; with appressed hairs, or erect hairs; with black hairs; without auricles. Culm-sheath blade linear; reflexed. Leaves cauline. Leaf-sheaths keeled; outer margin hairy. Leaf-sheath oral hairs scanty. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 8-12 cm long; 12-16 mm wide; glaucous. Leaf-blade surface hispid; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate. … [flowers and seeds described]." — KewScience POWO, accessed 10 July 2020 [#1305].

(2) "Habit: Perennial; caespitose. Rhizomes elongated; leptomorph. Culms erect; 1000–1200 cm long; 100–200 mm diam.; woody. Culm-internodes semiterete; hollow; light green. Culm-nodes glabrous. Lateral branches dendroid. Culm-sheaths 15–25 cm long; hispid; with appressed hairs, or erect hairs; with black hairs; without auricles. Culm-sheath blade linear; reflexed. Leaves cauline. Leaf-sheaths keeled; outer margin hairy. Leaf-sheath oral hairs scanty. Leaf-sheath auricles falcate. Ligule an eciliate membrane. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 8–12 cm long; 12–16 mm wide; glaucous. Leaf-blade surface hispid; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate. … [flowers and seeds described]." — Kew GrassBase, accessed 10 July 2020 [#1335].

(3) "Culms 8–10 m, 4–6 cm in diam.; internodes bright green, not white powdery, becoming yellow-green or green, 30–42 cm in mid-culm, initially sparsely retrorsely white hairy, becoming glabrous; wall 3–7 mm thick; nodal ridge weakly elevated, as prominent as or slightly more prominent than sheath scar. Culm sheaths green or green-purple to purple, with pale yellow or yellow-green stripes, usually with sparse, small, dark spots, distal margins purple, apex broadly truncate or slightly convex; auricles absent to 2, purple, falcate, small to large; oral setae purple; ligule purple, usually slightly arcuate or truncate, relatively short, broad, with longer purple setae, white ciliolate; blade erect or sometimes spreading in upper sheaths, yellow-green or purple-green, triangular to linear-triangular, margins proximally purple, nearly flat to weakly crinkled. Leaves 1 or 2 per ultimate branch; auricles small or obsolete; oral setae erect; blade 7.5–16 × 1.3–2.2 cm. Inflorescence not known. New shoots early May. 2n = 48*." — Flora of China, accessed 10 July 2020 [#1303].

Images: Line drawing in Flora of China [#1303]. Photos in AsianFlora (foliage) [#1332]; photo of the type of P. bawa at Kew Herbarium (leafy branches) [#1333].