黑穗薹草

生長于高山凍原上。

產自吉林;分布朝鮮、日本、俄羅斯及歐洲。

黑穗薹草(原亞種)

根狀莖短。稈密叢生，高15-65厘米，三棱形，上部稍粗糙，頂端稍向下傾斜，基部葉鞘無葉片，紫紅色，稍網狀分裂。葉短于稈，寬3-5毫米，稍粗糙。苞片最下部的1-2枚葉狀，無鞘，上部的剛毛狀或鱗片狀。小穗3-5個，接近，頂生小穗雌雄順序，倒卵形或長圓狀倒卵形。側生小穗雌性，長圓形，長1-1.5厘米，寬約5-6毫米;下部2個具長柄，稍下垂。雌花鱗片卵形至狹卵形，頂端稍急尖至漸尖，褐色，黑褐色至紫褐色，背部中脈色淡。果囊與鱗片幾等長或稍短或稍長，橢圓形或卵形，長3-3.5毫米，淡褐色，頂端深褐色或帶紫褐色，無脈，無毛，基部圓形，頂端急縮成圓柱狀的短喙，喙口淺2齒裂。小堅果疏松地包于果囊之下半部，倒卵形，三棱形，長1.5-1.7毫米;花柱基部不增粗，柱頭3個。

急尖薹草組Sect. Acutae Fries

白鱗薹草組Sect. Albae Aschers. et Graebner.

異囊薹草組Sect. Anomalae Carey

黑穗薹草組Sect. Atratae Kunth

細稈薹草組Sect. Capillares Aschers. et Graebn.

頭穗薹草組Sect. Capituligerae Kukenth

薹草組Sect. Carex

密花薹草組Sect. Confertiflorae Franch.

隱穗薹草組Sect. Cryptostachyae Franch.

瘦果薹草組Sect. Debiles Carey

美穗薹草組Sect. Decorae (Kukenth.) Ohwi

指狀薹草組Sect. Digitatae Fries

異株薹草組Sect. Dioicae (Tuckerm.) Pax

溪水薹草組Sect. Forficulae Franch. ex Raymond

凍原薹草組Sect. Frigidae Fries ex Kukenth.

米柱薹草組Sect. Glaucaeformes Ohwi

細柄薹草組Sect. Gracilis Tuckerm.

短喙薹草組Sect. Grallatoriae Kukenth.

膜囊薹草組Sect. Hymenochlaenae Drejer

匏囊薹草組Sect. Lageniformes (Ohwi) Nelmes

黃囊薹草組Sect. Lamprochlaenae Drejer

疏花薹草組Sect. Laxiflorae Kunth

濕生薹草組Sect. Limosae Tuckerm.

灰帽薹草組Sect. Mitratae Kukenth.

柔果薹草組Sect. Molliculae Ohwi

玉簪薹草組Sect. Montanae Fries

硬毛果薹草組Sect. Occlusae C. B. Clarke

尖苞薹草組Sect. Orthocerates Koch

沼生薹草組Sect. Paludosae Fries

少花薹草組Sect. Paniceae Tuckerm.

脹囊薹草組Sect. Physocarpae Drejer

帚狀薹草組Sect. Praelongae (Kukenth.) Nelmes

似莎薹草組Sect. Pseudo-cypereae Tuckerm.

根穗薹草組Sect. Radicales (Kukenth.) Nelmes

單穗薹草組Sect. Rarae C. B. Clarke

根足薹草組Sect. Rhizopodae Ohwi

菱形果薹草組Sect. Rhomboidales Kukenth.

石薹草組Sect. Rupestres Tuckerm.

離穗薹草組Sect. Secalinae O. F. Lang

寬葉薹草組Sect. Siderostictae Franch.

隱果薹草組Sect. Temneris (Rafin.) V. Krecz.

糙果薹草組Sect. Trachychlaenae Drejer

圖們薹草組Sect. Tuminenses Y. L. Chang et Y. L. Yang