目前为止，中国西南野生生物种质资源库共保藏该物种: 种子3份; DNA材料4份; 离体材料51份;

• 科:兰科    Orchidaceae
• 属:石斛属    Dendrobium
• 种:球花石斛   Dendrobium thyrsiflorum

12. Dendrobium thyrsiflorum H. G. Reichenbach ex André, Ill. Hort. 22: 88. 1875. 球花石斛 qiu hua shi hu Callista thyrsiflora (H. G. Reichenbach ex André) M. A. Clements; Dendrobium densiflorum Wallich var. alboluteum J. D. Hooker; D. galliceanum Linden.Stems erect or ascending, cylindric, 12-46 cm, stout, 7-16 mm in diam., base contracted and narrowly cylindric, with several nodes, with several longitudinal ridges, yellowish brown and glossy. Leaves 3 or 4 on upper part of stem, alternate, oblanceolate, 9-16 × 2.4-5 cm, leathery, base not decurrent into clasping sheaths, but narrowed into a stalk ca. 6 mm, apex acute. Inflorescence arising laterally on previous year’s leafy stem, pendulous, 10-16 cm, densely many flowered; peduncle with 3 or 4 papery basal sheaths; floral bracts pale white, obovate, 10-15 × 5-13(or more) mm, papery, with several veins, not convolute when dry, apex bluntly rounded. Pedicel and ovary with pale white stripes tinged with purple, 2.5-3 cm. Flowers spreading, thin; sepals and petals white, sometimes flushed pink especially abaxially, lip golden yellow, column white, foot pale yellow, anther cap white. Dorsal sepal ovate, ca. 15 × 8 mm, 5-veined, entire, obtuse; lateral sepals slightly obliquely ovate-lanceolate, ca. 17 × 7 mm, 5-veined, entire, obtuse; mentum subglobose, ca. 4 mm wide. Petals suborbicular, ca. 14 × 12 mm, 7-veined with many secondary veins, base with claw ca. 2 mm, margin irregularly finely toothed above base, apex bluntly rounded; lip suborbicular to triangular, ca. 15 × 19 mm, abaxially sparsely pubescent, adaxially densely pubescent, bluntly rounded, base with claw ca. 3 mm; claw ornamented with a ligulate structure; column foot ca. 4 mm; anther cap compressed, conic.Epiphytic on tree trunks in mountain forests; 1100-1800 m. SE Yunnan [NE India, Laos, Myanmar, N Thailand, Vietnam].【引自：Flora of China】

茎直立或斜立，圆柱形，粗状，长12-46厘米，粗7-16毫米，基部收狭为细圆柱形，不分枝，具数节，黄褐色并且具光泽，有数条纵棱。叶3-4枚互生于茎的上端，革质，长圆形或长圆状披针形，长9-16厘米，宽2.4-5厘米，先端急尖，基部不下延为抱茎的鞘，但收狭为长约6毫米的柄。总状花序侧生于带有叶的老茎上端，下垂，长10-16厘米，密生许多花，花序柄基部被3-4枚纸质鞘；花苞片浅白色，纸质，倒卵形，长10-15毫米，宽5-13毫米，先端圆钝，具数条脉，干后不席卷；花梗和子房浅白色带紫色条纹，长2.5-3厘米；花开展，质地薄，萼片和花瓣白色；中萼片卵形，长约1.5厘米，宽8毫米，先端钝，全缘，具5条脉；侧萼片稍斜卵状披针形，长1.7厘米，宽7毫米，先端钝，全缘，具5条脉；萼囊近球形，宽约4毫米；花瓣近圆形，长14毫米，宽12毫米，先端圆钝，基部具长约2毫米的爪，具7条脉和许多支脉，基部以上边缘具不整齐的细齿；唇瓣金黄色，半圆状三角形，长15毫米，宽19毫米，先端圆钝，基部具长约3毫米的爪，上面密布短绒毛，背面疏被短绒毛；爪的前方具1枚倒向的舌状物；蕊柱白色，长4毫米；蕊柱足淡黄色，长4毫米；药帽白色，前后压扁的圆锥形。花期4-5月。 【引自：中国植物志】