舟穎剪股穎檢視原始碼討論檢視歷史
舟穎剪股穎 |
中文名:舟穎剪股穎 拉丁學名:Agrostis fukuyamae Ohwi 界:植物界 門:種子植物門 綱:單子葉植物綱 科:禾本科 屬:剪股穎屬 分布區域:台灣省 |
舟穎剪股穎(zhōu yǐng jiǎn gǔ yǐng),學名 Agrostis fukuyamae Ohwi,異名:Agrostis rigidula subsp. fukuyamae Agrostis infirma var. fukuyamae Agrostis rigidula var. fukuyamae ,多年生草本,無匍匐莖。稈直立,高15-20厘米,細弱而平滑。分布區域:台灣省。 [1]
舟穎剪股穎植物資料
種 名:舟穎剪股穎 學 名:Agrostis fukuyamae Ohwi
科:禾本科 屬:剪股穎屬
舟穎剪股穎產地分布
產我國台灣省。
舟穎剪股穎形態特徵
多年生草本,無匍匐莖。稈直立,高15-20厘米,細弱而平滑。葉鞘長於節間,長可達7厘米;葉舌干膜質,上部者長達2毫米;葉片線形,長5-10厘米,對摺或內卷,先端急尖或鈍,內緣具毛。
圓錐花序披針形,長7-10厘米,寬10-15毫米,花後收縮,每節具3-4分枝,分枝基部有小穗腋生;小穗紫色,長1.5毫米,穗梗先端加粗,成棒柱狀;兩穎等長,長圓形,成舟狀;
脊上部粗糙,先端急尖,具1脈,或具不明顯的短側脈;外稃長達1.2毫米,寬橢圓形,白色膜質,背部具極不明顯的4-5脈,先端截形,近全緣,基盤兩側之毛極短,長0.2毫米;
內稃長約為外稃的1/3,無脊;花葯長7-8毫米 。
Agrostis infirma Buse var. fukuyamae (Ohwi) Veldkamp; A. rigidula Steudel subsp. fukuyamae (Ohwi) T. Koyama; A. rigidula var. fukuyamae (Ohwi) Veldkamp.
Perennial, tufted. Culms erect, 15–20 cm tall, 0.5–1 mm in diam., 2-noded. Leaf sheaths longer than internodes, smooth; leaf blades narrowly linear to setaceous, folded, 5–10 cm × 0.6–1 mm (when folded), abaxial surface smooth or scaberulous, adaxial surface scabrid; ligule 0.8–1.5 mm, apex rounded or truncate.
Panicle contracted when young, later open, narrowly ovate in outline, 7–10 cm; branches 3–4 per node, ascending to spreading, longest 3.5–6 cm, almost smooth, bearing spikelets from near base.
Spikelets 1.5–2 mm, purplish green; glumes lanceolate-oblong, equal, keel scaberulous toward apex, apex acute; callus hairs 0.2–0.3 mm; lemma more than 3/4 spikelet length, awnless, midvein terminating near middle of back, apex broadly obtuse; palea 0.6–0.8 mm, slightly less to slightly more than 1/2 lemma length. Anthers 0.7–1 mm. Fl. Jul.
分類文獻
《中國植物志》 第9(3)卷 (1987) >> 240頁 PDF >> 舟穎剪股穎 Agrostis fukuyamae 14.舟穎剪股穎(擬)
Agrostis fukuyamae Ohwi in Fedde, Repert. Sp. Nov. 36: 39. 1934; 台灣禾草243. 圖16, 1975; 台灣植物志5: 400.圖1376, 1978.