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乐昌虾脊兰Calanthe lechangensis

时间:2013-10-23 16:10来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):乐昌虾脊兰 学名( Scientific Name ): Calanthe lechangensis Z. H. Tsi et T. Tang 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): 科属( Family Genus ): 兰科(Orchidaceae)
中文名(Chinese Name):乐昌虾脊兰
学名(Scientific Name):Calanthe lechangensis Z. H. Tsi et T. Tang
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):兰科(Orchidaceae)虾脊兰属
形态特征(Description):根状茎不明显。假鳞茎粗短,圆锥形,粗约1厘米,常具3枚鞘和1枚叶。假茎9-20厘米。叶在花期尚未展开,宽椭圆形,长20-30厘米,宽8-11厘米,先端锐尖,基部收狭为柄,边缘稍波状,两面无毛;叶柄细长,长14-32厘米。花葶从叶腋发出,直立,不高出叶层外,长达35厘米,被短柔毛;总状花序长3-4厘米,疏生4-5朵花;花苞片宿存,卵状披针形,长4-5毫米,先端急尖并呈芒状,膜质,无毛;花梗和子房长1.2厘米,密被短柔毛;花浅红色;中萼片卵状披针形,长17-18毫米,中部宽6-7毫米,先端急尖,具5条脉,背面密被短柔毛;侧萼片稍斜的长圆形,与中萼片等长,但稍狭,先端多少钩曲并急尖而呈芒状,具5条脉,背面密被短柔毛;花瓣长圆状披针形,长15-16毫米,中部宽4.5-5毫米,具3条脉,背面被短柔毛;唇瓣倒卵状圆形,基部具爪,与整个蕊柱翅合生,3裂;侧裂片很小,牙齿状,长1-3毫米,宽0.8-1.2毫米,先端钝,两侧裂片之间具3条隆起的褶片;中裂片宽卵状楔形,长1厘米,近先端处宽1厘米,比两侧裂片先端之间的距离宽大得多,先端微凹并具短尖,基部具爪,边缘多少波状,无毛;距圆筒形,伸直,长约9毫米,粗1.5毫米,末端钝,内外均被毛;蕊柱长6毫米,上端扩大,无毛;蕊柱翅三角形;蕊喙2裂;裂片近三角形,长约1毫米,先端近锐尖;药帽长4毫米,前端骤然收狭而呈喙状;花粉团棒状,近等大,长约2毫米;粘盘近长圆形,长0.8毫米。花期3-4月。
分布(Distribution):产广东北部(乐昌、乳源)。生境、海拔不详。
用途(Use):
引自中国植物志英文版:FOC Vol. 25 Page 294, 308   
Calanthe lechangensis Z. H. Tsi & Tang, Acta Phytotax. Sin. 19: 506. 1981.
乐昌虾脊兰 le chang xia ji lan| Orchidaceae  | Calanthe
Plants to ca. 40 cm tall. Rhizome inconspicuous. Pseudobulbs conic, small, ca. 1 cm in diam., often with 3 sheaths. Leaf solitary, not well developed at anthesis, not deciduous; blade broadly elliptic, 20-30 × 8-11 cm, glabrous, margin slightly undulate, apex acute; petiole-like base 14-32 cm, slender, usually involute and forming a pseudostem 9-20 cm. Scape arising from leaf axil, erect, to 35 cm, puberulent; rachis 3-4 cm, laxly 4- or 5-flowered; floral bracts persistent, ovate-lanceolate, 4-5 mm, membranous, glabrous, apex aristate. Flowers pale red; pedicel and ovary ca. 12 mm, densely puberulent. Dorsal sepal ovate-lanceolate, 17-18 × 6-7 mm, abaxially densely puberulent, 5-veined, apex acute; lateral sepals oblong, slightly oblique, 17-18 × 5-6 mm, abaxially densely puberulent, 5-veined, apex ± hooked and aristate. Petals oblong-lanceolate, 15-16 × 4.5-5 mm, abaxially puberulent, 3-veined; lip adnate to entire length of column wings, obovate-orbicular, base clawed, 3-lobed; lateral lobes tooth-shaped, very small, 1-3 × 0.8-1.2 mm, apex obtuse; mid-lobe broadly ovate-cuneate, ca. 10 × 10 mm, base clawed, margin slightly erose, apex emarginate and mucronate in sinus; disk with 3 lamellae; spur straight, cylindric, ca. 9 × 1.5 mm, outside and inside puberulent, apex obtuse. Column ca. 6 mm, dilated toward apex, glabrous, with triangular wings; rostellum 2-lobed; lobes ca. 1 mm; anther cap ca. 4 mm, beaked; pollinia clavate, subequal in size, ca. 2 mm; viscidium suboblong, ca. 0.8 mm. Fl. Mar-Apr.
● N Guangdong.




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