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连柱金丝桃 |
中文学名:连柱金丝桃 拉丁学名:Hypericum cohaerens N. Robson 二名法:Hypericum cohaerens 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:侧膜胎座目 科:藤黄科 亚 科:金丝桃亚科 族:金丝桃族 属:金丝桃属 种:连柱金丝桃 分布区域:产贵州、 云南等地。 药用价值:冠心病, 心脏病,心血管疾病 |
连柱金丝桃 产贵州东北部(梵净山)、云南东北部(大关)。 [1]
连柱金丝桃形态特征
灌木,有开张枝条。茎红色,幼时具4纵线棱及两侧压扁,很快呈圆柱形;皮层红褐色。
叶具柄,柄长1.5-2毫米;叶片长圆形至椭圆形,长2.5-5厘米,宽1.2-2.3厘米,先端锐尖至圆形,基部楔形至近渐狭,边缘平坦,坚纸质,上面绿色,下面淡绿但不呈苍白色,主侧脉2-3对,全部或最上方I对有时与中脉分枝形成多少 连柱金丝桃 拱弯的近边缘脉(环状脉),第三级脉网很密集,不甚明显,无腹腺体,叶片腺体小,点状。
花序具1-7花,自茎顶第1节生出,松散的近伞房状;花梗长0.8-1.1厘米;苞片线形,早落。花直径3.5-5厘米,星状;花蕾卵珠形,先端近渐尖。萼片狭披针形至线形,等大,长0.9-1.2厘米,宽0.15-0.3厘米,先端锐尖,全缘,中脉分明,下方有时可见其中1对小脉,有腺条纹。
花瓣金黄色,无红晕,开张,倒披针形,长1.6-2.5厘米,宽0.8-1.3厘米,长约为萼片的2倍,边缘全缘,无腺体,有近顶生的小尖突,小尖突先端锐尖。雄蕊5束,每束有雄蕊约30枚,最长者(或可能较长者)长1.6-2厘米,长约为花瓣4/5-19/20,花药黄色。
子房卵珠形至近圆球形,长4-5毫米,宽3-4毫米;花柱长1-1.2厘米,长约为子房2.2-2.5倍,自开始在下半部合生后变成离生,直伸;柱头小。蒴果及种未未见。花期5-7月。 [2]
Hypericum cohaerns N. Robson in Bull. Brit. Mus. Nat. Hist. Bot. 12 (4): 235. 1985.
Shrubs, height unrecorded; branches spreading. Stems 4-lined and ancipitous when young, soon terete; internodes 1.5-2.3 cm, shorter than leaves. Leaves with petiole 1.5-2 mm; blade oblong to elliptic, 2.5-5 × 1.2-2.3 cm, thickly papery, abaxially paler but not glaucous; laminar glands very small, dots; abaxial glands absent; main lateral veins 2- or 3-paired, all or the upper sometimes uniting with midvein branches to form ± crenate intramarginal vein, tertiary reticulation very dense, not very conspicuous; base cuneate to subangustate, apex acute to rounded. Inflorescence 1-7-flowered, from apical node, lax, shallowly round-topped; bracts caducous, linear. Pedicels 8-11 mm. Flowers 3.5-5 cm in diam., stellate; buds ovoid, apex subacuminate. Sepals spreading, narrowly lanceolate to linear, equal, 0.9-1.2 cm × 1.5-3 mm; laminar glands lines, margin entire, apex acute. Petals golden yellow, oblanceolate, 1.6-2.5 × 0.8-1.3 mm, ca. 2 × as long as sepals; margin entire, eglandular; apiculus acute. Stamen fascicles each with ca. 30 stamens, longest 1.6-2 cm or more, 0.8-0.95 × as long as petals. Ovary ovoid to subglobose, 4-5 × 3-4 mm; styles 1-1.2 cm, 2.2-2.5 × as long as ovary, at first up to half coherent but becoming free, straight. Capsule and seeds unknown. Fl. May-Jul.
连柱金丝桃生长环境
生长于海拔1450-2000米得石间灌丛。