Dendrocalamus calostachyus

Synonyms: Bambusa calostachya Kurz, J. Asiat. Soc. Bengal, Pt. 2, Nat. Hist. 42 (4), 1874: 250; Sinocalamus calostachyus (Kurz) Keng f., J. Nanjing Univ. 1962 (1), 1962: 34.

Thai name: No known records.

Chinese name: 美穗龙竹 (měi suì lóng zhú).

Distribution: THAILAND: Introduced, but there is no known record of whether this species has been successfully kept in cultivation in Thailand. — INDIA (North-East): Arunachal Pradesh. — MYANMAR. — CHINA (South): Yunnan.

Descriptions:

(1) "Habit: Perennial; caespitose. Rhizomes short; pachymorph. Culms erect; 2000-2500 cm long; woody. Culm-internodes terete; 30-40 cm long; distally pubescent. Lateral branches dendroid. Culm-sheaths pubescent; with appressed hairs; with tawny hairs; truncate at apex. Culm-sheath ligule entire. Leaf-sheaths striately veined; outer margin hairy. Ligule an eciliate membrane; entire, or erose; truncate. Leaf-blade base with a brief petiole-like connection to sheath. Leaf-blades lanceolate; 22-30 cm long; 30-65 mm wide. Leaf-blade venation with 18-26 secondary veins. Leaf-blade surface pubescent; hairy abaxially. Leaf-blade margins scabrous. Leaf-blade apex acuminate. … [flowers and seeds described]". — KewScience POWO, accessed 9 July 2020 [#1305].

(2) "Culms tall. Culm sheaths leathery, apex truncate; ligule 1–2 mm, rounded or serrulate; auricles absent; blade erect. Leaf sheaths glabrous, margins long ciliate, apex truncate; ligule 1–2 mm, rounded or serrulate; blade variable, broadly lanceolate, 23–30 × 2.5–6.5 cm, apex acute. … [flowers described, seeds unknown]". — Flora of China, accessed 9 July 2020 [#1303].