具槽石斛Dendrobium sulcatum
中文名（Chinese Name）：具槽石斛
学名（Scientific Name）：Dendrobium sulcatum Lindl.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Callista sulcata (Lindl.) Kuntze
科属（Family & Genus）：兰科（Orchidaceae）石斛属
形态特征（Description）：茎通常直立，肉质，扁棒状，长24-38厘米，从基部向上逐渐增粗，上部最粗处约1.5厘米，下部收狭为细圆柱形，粗3-4毫米，不分枝，具纵条纹和数个节，节间长2-5厘米，被膜质鞘，干后黄褐色带光泽。叶纸质，数枚，互生于茎的近顶端，常斜举，长圆形，长18-21厘米，宽4.5厘米，先端急尖或有时等侧2尖裂，基部稍收狭，但不下延为抱茎的鞘。总状花序从当年生具叶的茎上端发出，长8-15厘米，下垂，密生少数至多数花；花序柄基部有3-4枚覆瓦状的鞘；花苞片很小，狭卵状披针形，长约5毫米；花梗和子房长约2.5厘米；花质地薄，白天张开，晚间闭合，奶黄色；中萼片长圆形，长约2.5厘米，宽9毫米，先端近锐尖，具5-6条脉，侧萼片与中萼片近等大；萼囊圆锥形，宽而钝，长约5毫米；花瓣近倒卵形，长2.4厘米，宽1.1厘米，先端锐尖，基部收狭为短爪，具5条脉；唇瓣的颜色较深，呈橘黄色，近基部两侧各具1个褐色斑块，近圆形，长、宽约2厘米，两侧围抱蕊柱而使整个唇瓣呈兜状，先端微凹，基部具短爪，唇盘上面的前半部密被短柔毛，边缘具睫状毛；蕊柱长约5毫米；药帽前后压扁的半球形或圆锥形，顶端稍凹，光滑，前端边缘多少不整齐。花期6月。
分布（Distribution）：产云南。生于海拔700～800米的密林中树干上。印度、缅甸、泰国、老挝也有。
用途（Use）：
引自中国植物志英文版：FOC Vol. 25 Page 369, 375
Dendrobium sulcatum Lindley, Edwards’s Bot. Reg. 24: ad t. 65. 1838.
具槽石斛 ju cao shi hu| Orchidaceae | Dendrobium
Callista sulcata (Lindley) Kuntze.
Stem pseudobulbous, erect, clavate, compressed, narrowed toward base, 24-38 cm, 3-4 mm in diam. below, 1-2.5 cm in diam. at widest point, grooved, unbranched, nodes several, with longitudinal stripes, internodes 2-5 cm, with a membranous sheath, yellowish brown and glossy when dry. Leaves 3 or 4, subterminal, sessile, distichous, broadly elliptic to elliptic-ovate, 18-21 × ca. 4.5 cm, papery, apex acute. Inflorescence axillary, adjacent to leaf, subdensely 5-10-flowered; peduncle 2.5-3 cm, rachis short; basal sheaths 3 or 4, overlapping at base, distant above, ovate, 3.5-5 × 2-3 mm, membranous, 3-veined, subacute; floral bracts ovate, 3-4 × 2-3 mm, membranous, 3-veined, apex acute. Pedicel and ovary ca. 2.5 cm, slender. Flowers thin, uniformly golden yellow, lip with red-purple markings or stripes at base. Dorsal sepal oblong, ca. 25 × 9 mm, 5- or 6-veined, apex subacute; lateral sepals nearly equal to dorsal sepal; mentum conic, ca. 5 mm, broad and obtuse. Petals subobovate, ca. 24 × 11 mm, 5-veined, base contracted into a short claw, margin entire, apex acute; lip suborbicular to wedge-shaped, incurved, 18-20 × ca. 20 mm, adaxial surface densely pubescent near margin, base shortly clawed, margin minutely erose to ciliate-hairy, apex emarginate. Column ca. 5 mm; anther cap backward and forward compressed, subglobose or conic, glabrous, front margin ± irregular, apex emarginate.
Epiphytic on tree trunks in dense forests; 700-800 m. S Yunnan (Mengla) [NE India, N Laos, Myanmar, N Thailand].
（责任编辑：徐晔春）
学名（Scientific Name）：Dendrobium sulcatum Lindl.
英文名（English Common Name）：
别名（Chinese Common Name）：
异名（Synonym）：Callista sulcata (Lindl.) Kuntze
科属（Family & Genus）：兰科（Orchidaceae）石斛属
形态特征（Description）：茎通常直立，肉质，扁棒状，长24-38厘米，从基部向上逐渐增粗，上部最粗处约1.5厘米，下部收狭为细圆柱形，粗3-4毫米，不分枝，具纵条纹和数个节，节间长2-5厘米，被膜质鞘，干后黄褐色带光泽。叶纸质，数枚，互生于茎的近顶端，常斜举，长圆形，长18-21厘米，宽4.5厘米，先端急尖或有时等侧2尖裂，基部稍收狭，但不下延为抱茎的鞘。总状花序从当年生具叶的茎上端发出，长8-15厘米，下垂，密生少数至多数花；花序柄基部有3-4枚覆瓦状的鞘；花苞片很小，狭卵状披针形，长约5毫米；花梗和子房长约2.5厘米；花质地薄，白天张开，晚间闭合，奶黄色；中萼片长圆形，长约2.5厘米，宽9毫米，先端近锐尖，具5-6条脉，侧萼片与中萼片近等大；萼囊圆锥形，宽而钝，长约5毫米；花瓣近倒卵形，长2.4厘米，宽1.1厘米，先端锐尖，基部收狭为短爪，具5条脉；唇瓣的颜色较深，呈橘黄色，近基部两侧各具1个褐色斑块，近圆形，长、宽约2厘米，两侧围抱蕊柱而使整个唇瓣呈兜状，先端微凹，基部具短爪，唇盘上面的前半部密被短柔毛，边缘具睫状毛；蕊柱长约5毫米；药帽前后压扁的半球形或圆锥形，顶端稍凹，光滑，前端边缘多少不整齐。花期6月。
分布（Distribution）：产云南。生于海拔700～800米的密林中树干上。印度、缅甸、泰国、老挝也有。
用途（Use）：
引自中国植物志英文版：FOC Vol. 25 Page 369, 375
Dendrobium sulcatum Lindley, Edwards’s Bot. Reg. 24: ad t. 65. 1838.
具槽石斛 ju cao shi hu| Orchidaceae | Dendrobium
Callista sulcata (Lindley) Kuntze.
Stem pseudobulbous, erect, clavate, compressed, narrowed toward base, 24-38 cm, 3-4 mm in diam. below, 1-2.5 cm in diam. at widest point, grooved, unbranched, nodes several, with longitudinal stripes, internodes 2-5 cm, with a membranous sheath, yellowish brown and glossy when dry. Leaves 3 or 4, subterminal, sessile, distichous, broadly elliptic to elliptic-ovate, 18-21 × ca. 4.5 cm, papery, apex acute. Inflorescence axillary, adjacent to leaf, subdensely 5-10-flowered; peduncle 2.5-3 cm, rachis short; basal sheaths 3 or 4, overlapping at base, distant above, ovate, 3.5-5 × 2-3 mm, membranous, 3-veined, subacute; floral bracts ovate, 3-4 × 2-3 mm, membranous, 3-veined, apex acute. Pedicel and ovary ca. 2.5 cm, slender. Flowers thin, uniformly golden yellow, lip with red-purple markings or stripes at base. Dorsal sepal oblong, ca. 25 × 9 mm, 5- or 6-veined, apex subacute; lateral sepals nearly equal to dorsal sepal; mentum conic, ca. 5 mm, broad and obtuse. Petals subobovate, ca. 24 × 11 mm, 5-veined, base contracted into a short claw, margin entire, apex acute; lip suborbicular to wedge-shaped, incurved, 18-20 × ca. 20 mm, adaxial surface densely pubescent near margin, base shortly clawed, margin minutely erose to ciliate-hairy, apex emarginate. Column ca. 5 mm; anther cap backward and forward compressed, subglobose or conic, glabrous, front margin ± irregular, apex emarginate.
Epiphytic on tree trunks in dense forests; 700-800 m. S Yunnan (Mengla) [NE India, N Laos, Myanmar, N Thailand].
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