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資料編號: | HK-3449 |
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植物科名: (APG新系統) | RUBIACEAE茜草科 [找同科植物] |
標室舊系統 | RUBIACEAE茜草科[找同科] |
特別特徵: | 單葉對生或單葉輪生 |
資料更新: | 20220807 08:59:32 am |
備註: 槽裂木屬的托葉全緣或者二裂不過半。 而海南槽裂木托葉更爲全緣。 水團花屬的托葉則深裂過半 風箱樹的托葉全緣而頂部有時有腺體。萼裂片之間、花冠裂片之間 有腺體。水團花沒這些 thanks Crawford's info hk checklist: 球形頭狀花序: 胚珠及種子每室單個;葉對生或輪生--風箱樹屬 胚珠及種子每室多個; 葉對生-- 鉤藤屬, 烏藤屬, 水團花屬及槽裂木屬 茜草科則葉對生,托葉生在對生葉柄的兩旁.此科太多屬,只能說是憑經驗來分屬.(thanks Daniel's info) 茜草科 (香港大約有100多種, 第七大科) 口訣:茜草單葉對或輪, 托葉型多難區分,花冠瓣裂四至十, 梔子鉤藤咖啡因. 葉對生或有時輪生,有時具不等葉性,通常全緣,極少有齒缺; 萼通常4-5裂,很少更多裂,極少2裂,裂片通常小或幾乎消失,有時其中1或幾個裂片明顯增大成葉狀,其色白或艷麗(eg. 玉葉金花,楠藤), 花冠合瓣,管狀、漏斗狀、高腳碟狀或輻狀,花冠通常4-5裂(五星, 玉葉金花5裂, 方骨草4裂, 梔子6裂),,很少3裂或8-10裂. Eg.水團花,狗骨柴,香港大沙葉,白蟾, ,滿天星,玉葉金花,楠藤,長節耳草,傘房花耳草,白花蛇舌草,光葉豐花草,雞眼藤,雞矢藤, 山大刀(九節),龍船花,蓋裂果,短小蛇根草,穿根藤,方骨草. 單葉對生或輪生,兩片托葉柄基生。 花多兩性輻射稱,45基數樣式多。 雄蕊花冠相互生,子房下位常2室。 蒴果核果和漿果,胚珠多數至1枚。 from internet FOHK: Trees, shrubs, herbs, or rarely climbers. Leaves opposite or whorled, simple and usually entire. Stipules usually interpetiolar[葉對生或輪生,單葉且通常全緣。 托葉通常在葉柄間], fused at each node or distinct, sometimes leafy or reduced to a stipular line, seldom intrapetiolar and small. Inflorescence various, basically composed of cymes. Flowers bisexual and regular, rarely unisexual or polygamous, often heterostylic. Calyx‑tube fused with ovary, apex 4–5‑lobed, rarely subentire, sometimes one of the lobes enlarged. Corolla tubular, funnel‑shaped, salverform, bell‑shaped or rotate, 4–5‑lobed; lobes valvate, imbricate or contorted in bud. Stamens as many as lobes of corolla, alternating with them and inserted in the tube; anthers 2‑celled, opening by longitudinal slits, or rarely by apical pores. Ovary usually inferior, usually 2‑locular and with axile, apical or basal placentas, rarely 1‑locular with parietal placentas; styles simple, with a simple terminal stigma, or with as many stigmatic lobes as cells of the ovary. Fruit a capsule, berry, drupe or schizocarp; seeds sometimes winged. | |
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